ThermoFluid Final 2

Brownstone Heating System Design Analysis
Frederick Avyasa Smith
MECE E4330: Thermo-Fluids Systems Design
Prof: Dr. Sinisa Vukelic
December 18th, 2014

2
Table of Contents
Introduction.....................................................................................................................3
1st and 2nd FloorSchematics........................................................................................................................5
3rd and 4th FloorSchematics........................................................................................................................6
Analysis ............................................................................................................................. 7
Heat Loads.............................................................................................................................................................7
Load Requirements Over a Year.............................................................................................................11
Load Requirements Over Each Month of the Year.........................................................................11
Load Requirements Over an Autumn Day..........................................................................................15
Duct Network....................................................................................................................................................17
Overview Schematic of Developed Duct Network..........................................................................19
Schematics of Developed Duct Networks for Each Floor............................................................20
Conclusion ......................................................................................................................23
Appendix.........................................................................................................................25
SampleCalculations......................................................................................................................................25
Code Developed forHeating Load Analysis.....................................................................................27
Year.....................................................................................................................................................................27
Month.................................................................................................................................................................31
Day.......................................................................................................................................................................37
Natural Gas FurnaceSpecifications......................................................................................................38
References ......................................................................................................................47

3
Introduction
The famous and common four story townhouses located all around the New York
City area are commonly known as Brownstones. Brownstones are townhouses that
are placed next to each other continuously to form a large row. The townhouses
share the same walls and are generally the same height. Brownstones are very old
buildings that were constructed in the mid-19th century. Buildings constructed
before the 1830s were made of brick or wood. Due to an economic boom in the mid-
19th century Brownstones started to be constructed. The growing middle class of the
time desired more sophisticated styles of housing. There were large deposits of
sandstone located in Connecticut and New Jersey. This specific type of sandstone
located in neighboring states is known as Brownstone because of its rich distinctive
reddish-brown color. The stone could be conveniently transported from these states
via barge. Thus, enormous amounts of construction using the Brownstone material
occurred. Currently, these Brownstones still exist and are very popular. However,
the heating systems used in these buildings usually are outdated and have not been
replaced in decades. New York City is a very cold place to live in the winter months.
Therefore it would be crucial for one living in a Brownstone to have an updated fully
functional heating system. Thus, a preliminary analysis on a heating system in a
classic Brownstone townhouse will take place. The analysis will take into
consideration many factors and a design of a heating system, that can operate at any
time of the year, will be devised. Heat losses through building materials including
exterior walls, windows, doors, and the roof will be analyzed in order to determine a
proper heat source for the heating system. Additionally, a piping/duct network will
be devised in order to disperse this generated heat throughout the Brownstone.
This analysis will be heavily based upon methods, calculations, and supporting
documents found in the textbook Introduction to Thermo-Fluids Systems Design by
McDonald/Magande and HVAC: handbook of heating, ventilation and air conditioning
for design and implementation by Vedavarz [1&2]. In the table below the initial
parameters for this Brownstone are summarized:

4
Table 1 Initial Parameters Regarding the Brownstone
The schematics of the four floors of the Brownstone can be found in the figures
below:
Value
NYC
Brownstone
38
16
60
12
20
160
7
68-72
Front & Back Wall Insulation [R]
Roof Insulation [R]
Window Area (ft2
)
Skylight Area (ft2
)
Temprature Requirement (°F)
Given Parameters for Brownstone
Parameter Description
Location
Type of Building
Height of Building (ft)
Width of Building (ft)
Depth of Building (ft)

5
1st and 2nd Floor Schematics
Figure 1 Schematic of the 1st and 2nd Floor Levels of the Brownstone Townhouse

6
3rd and 4th Floor Schematics
Figure 2 Schematic of the 3rd and 4th Floor Levels of the Brownstone Townhouse

7
Analysis
Heat Loads
The Brownstone will be assumed to be located in the Central Park area and
additionally contain a small crawl space under the first floor. This space will have a
height of 5.66ft. For this preliminary analysis solar heat gain will not be considered.
In addition to this heat storage of the building structure and heat gain from internal
sources will not be considered. Lastly, heat loss due to infiltration will be considered
negligible due to superb insulation of the Brownstone. Overall heating requirements
will first be explored over the course of an entire year, each month of the year, and a
cold autumn day. In order to accomplish this the heat losses from the Brownstone
must be determined. The inside temperature of the Brownstone will be maintained
at 68°F for comfort. The hallways, bathrooms, and closets will not be heated for cost
saving purposes. In addition the basement area under the first floor will also not be
heated. Heat losses through the doors, walls, windows, and the roof will be found
utilizing the overall heat transfer coefficient. Most of these structures are
constructed in multiple layers. Overall thermal resistance can be represented using
electrical resistance as a model. The heat transfer rate is assumed to be constant
throughout the materials that are in series. Thus the overall heat transfer coefficient
(U-Value) can be represented as 𝑈𝑜𝑣𝑒𝑟𝑎𝑙𝑙 =
1
𝑅 𝑡𝑜𝑡𝑎𝑙
. Many overall heat transfer
coefficients have been tabulated for a wide array of building materials and
configurations. These numerous tables will be utilized in this preliminary analysis. It
is noted that heat losses will be assumed to only occur from conduction in a one-
dimensional steady-state system. Thus, the equation 𝑞 = 𝑈𝐴( 𝑇𝑖 − 𝑇𝑜) = 𝑈𝐴∆𝑇 will
be utilized to calculate heat transfer via conduction. The equation utilizes the area of
the surface through which heat transfer is occurring and the temperature difference
between the inside surface and outside surface. In order to maintain the
Brownstone at 68°F the heat lost due to conduction must be placed back into the
Brownstone from a heat source. The Brownstone can essentially be modeled as a
rectangular prism. However not the entire surface of the prism will be analyzed
because not all of the areas are being heated. The rooms, which are to be heated, will
have the areas that are exposed to unheated areas outside of the prism analyzed.

8
Heat transfer to other neighboring Brownstones and to the basement via the floor
will be deemed negligible. Because the Brownstones are enclosed between two
other Brownstones the assumption will be made that these walls in contact will
exhibit the behavior of a completely insulated region. The basement will also be
considered completely insulated by the surrounding ground, thus rendering heat
transfer negligible. For this analysis the first floor will be modeled as being
completely above ground. These assumptions will be made for simplicity in the
analysis in order to design the heating system. Again, all heat losses will be added
together to provide an overall heating load for the Brownstone. Heat loss will stem
from the roof, front, and back of the building. Overall heat transfer coefficients that
will be used for the structure of the Brownstone in this analysis can be found in the
table below:
Table 2 Overall Heat Transfer Coefficients of All Considered Structures in Preliminary Analysis
U-Values were modified to account for R-12 and R-20 insulation in the Brownstone
building materials. It is noted that brick and sandstone have similar thermal
conductivities. This table is representative of all assumptions made on building
materials and structures. In addition the doors will be assumed to be 4ft in width
and the height of the wall. Furthermore, the skylights on the top floor will be divided
between the master bathroom and two bedrooms. The figures used to determine
the U-Value for the roof, front, and back walls can be found below:
Description U(BTU/ft2
h°F)
Roof & Ceiling Flat mason roof with built up roofing and R-20 insulation 0.04
Doors Wood solid core flush storm door 2.25in. thick 0.2
Windows Double glazing e=0.05 0.5in. argon space 0.25
Front Wall Solid masonry wall with 18in. Sandstone Brick 0.046
Back Wall Solid masonry wall with common 8in. Brick and R-12 insulation 0.05
U-Values of Brownstone Structures

9
Figure 3 Overall Heat Transfer Coefficients of Solid Masonry Walls. It is noted Construction 2 was
utilized as a model. [2]
Figure 4 Overall Heat Transfer Coefficients of Flat Masonry Roofs with Built up Roofing. It is noted
Construction 2 was used as a model. [2]

10
The calculations that will be used for the heat loss analysis in the Brownstone can be
found in the table below. These equations utilize the U-Values that were established
and the areas of the locations that are exposed to outside conditions:
Table 3 All Developed Heat Transfer Equations that will be Utilized to Calculate Heat Losses (1)
Now that the equations for heat transfer loss have been established the heating
loads can be explored. Below one will find figures that represent loads over the
course of an entire year, month and a cold day in August. The year that was used for
analysis was 2013. This will provide the development of a system that is as current
as possible:
Front Wall Window(s) Door Skylight(s) Roof Back Wall Window(s) Door Skylight(s) Roof
U(BTU/ft2
h°F) 0.046 0.25 0.2 n/a n/a 0.05 0.25 0.2 n/a n/a
Area of Surface(ft2
) 114.92 160 38 n/a n/a 114.92 160 38 n/a n/a
Developed Equation
Front Wall Window(s) Door Skylight(s) Roof Back Wall Window(s) Door Skylight(s) Roof
U(BTU/ft2
h°F) 0.046 0.25 0.2 n/a n/a 0.05 0.25 0.2 n/a n/a
Area of Surface(ft2
) 95.92 160 38 n/a n/a 114.92 320 38 n/a n/a
Developed Equation
Front Wall Window(s) Door Skylights(s) Roof Back Wall Window(s) Door Skylight(s) Roof
U(BTU/ft2
h°F) 0.046 0.25 n/a n/a n/a 0.05 0.25 n/a n/a n/a
Area of Surface(ft2
) 124.54 320 n/a n/a n/a 124.54 320 n/a n/a n/a
Developed Equation
Front Wall Window(s) Door Skylights(s) Roof Back Wall Window(s) Door Skylight(s) Roof
U(BTU/ft2
h°F) 0.046 0.25 n/a 0.25 0.04 0.05 0.25 n/a 0.25 0.04
Area of Surface(ft2
) 95.92 160 n/a 7 223.61 114.92 320 n/a 7 210.243
Developed Equation q=100.91ΔT q=96.34ΔT
Developed
Equation for Entire
Building
q=613.56ΔT
q=52.01ΔT q=92.22ΔT
q=46.78ΔT q=53.55ΔT
Living Room + Kitchen Bedroom
1st Floor
2nd Floor
3rd Floor
4th Floor
Developed Heat Transfer Equations for Brownstone
Bedroom 2 Bedroom
BedroomBedroom 2
Living Room Dining Area + Kitchen
q=85.73ΔT q=86.22ΔT

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Load Requirements Over a Year
Figure 5 Overall Load Requirements for the Brownstone Over the Course of 2013
Load Requirements Over Each Month of the Year
Figure 6 Overall Load Requirements for the Brownstone Over the Course of January
Figure 7 Overall Load Requirements for the Brownstone Over the Course of February
0
5000
10000
15000
20000
25000
30000
35000
40000
0 30 60 90 120 150 180 210 240 270 300 330 360
LoadRequiirement(BTU/hr)
Number of Days in a Year(Day)
Load Requirements Over the Course of a 2013
Overall Load Requirement (BTU/hr) Max Temp (°F)
Overall Load Requirement (BTU/hr) Mean Temp (°F)
Overall Load Requirement (BTU/hr) Low Temp (°F)
Poly. (Overall Load Requirement (BTU/hr) Mean Temp
(°F))
0
5000
10000
15000
20000
25000
30000
35000
40000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
LoadRequirement(BTU/hr)
Number of Days in a Month(Day)
Load Requirement Over the Course of January
0
5000
10000
15000
20000
25000
30000
35000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Load Requirement Over the Course of February

12
Figure 8 Overall Load Requirements for the Brownstone Over the Course of March
Figure 9 Overall Load Requirements for the Brownstone Over the Course of April
Figure 10 Overall Load Requirements for the Brownstone Over the Course of May
0
5000
10000
15000
20000
25000
30000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Load Requirement Over the Course of March
0
5000
10000
15000
20000
25000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
LoadRequirement(BTU/hr(
Load Requirement Over the Course of April
0
2000
4000
6000
8000
10000
12000
14000
16000
18000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Load Requirement Over the Course of May

13
Figure 11 Overall Load Requirements for the Brownstone Over the Course of June
Figure 12 Overall Load Requirements for the Brownstone Over the Course of July
Figure 13 Overall Load Requirements for the Brownstone Over the Course of August
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Load Requirement Over the Course of June
0
500
1000
1500
2000
2500
3000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
LoadRequirement(BTU)/h
Load Requirement Over the Course of July
0
1000
2000
3000
4000
5000
6000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Load Requirement Over the Course of August

14
Figure 14 Overall Load Requirements for the Brownstone Over the Course of September
Figure 15 Overall Load Requirements for the Brownstone Over the Course of October
Figure 16 Overall Load Requirements for the Brownstone Over the Course of November
0
2000
4000
6000
8000
10000
12000
14000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Load Requirement Over the Course of September
0
2000
4000
6000
8000
10000
12000
14000
16000
18000
20000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Load Requirement Over the Course of October
0
5000
10000
15000
20000
25000
30000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Load Requirement Over the Course of November

15
Figure 17 Overall Load Requirements for the Brownstone Over the Course of December
Load Requirements Over an Autumn Day
Figure 18 Overall Load Requirements for the Brownstone Over August 14th, 2013
It is noted that temperature records over the entire 2013-year were acquired from
public records []. The coldest day in August in 2013 was August 13th. Therefore the
temperature values from this day were utilized in this analysis. All heating load
values can be found in the appendix within the code developed for heat load
analysis. In order to properly size the heating source the heating load for peak
building heating demand must be determined. One can see from Figure_ that the
biggest heat loads are in January. This directly correlates to the coldest temperature
recordings of the year that were found in January. Upon further investigation of
tabulated heat load requirement data it is determined that the biggest heat load
requirement is 34,972.977
𝐵𝑇𝑈
ℎ𝑟
(2). Due to the large assumptions made in this
preliminary analysis one would expect all heat load values to be relatively low.
Therefore this maximum value along with the other determined loads are
0
5000
10000
15000
20000
25000
30000
35000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Load Requirement Over the Course of December
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Number of Hours in A Day(hr)
Overall Load Requirement Over the Course of August 14th
Overall Load Requirement (BTU/hr)

16
acceptable. This load and the corresponding lowest temperature recording in
January will be utilized to calculate the heat load requirement per room. The heat
source that will be chosen for this analysis is a natural gas furnace. Therefore the
building will be heated through forced air heating. There are many natural gas lines
located in New York City and would provide an easily obtainable source of fuel for a
heating system. Furthermore, using a natural gas furnace is efficient, and easy to
maintain. Natural gas furnaces require little maintenance. The furnace will be placed
in the assumed insulated basement area. Therefore heat generated will not escape
to the outside environment through ductwork. All the ductwork will be efficiently
placed indoors. Next, the required total airflow rate and the required airflow rate
per room from the furnace will be determined. Required heat loads and airflow
values per room can be found in the table below. It is noted that a moderate heating
air temperature of 122°F will be utilized:
Table 4 Load and Airflow Rate Requirements for Each Heated Area in the Brownstone (3)
From Table 4 one can see that the total required airflow rate is 600 cfm. Now that all
the required parameters for heating the Brownstone are known the natural gas
furnace can be chosen. For this application the Rheem Classic Series
Upflow/Horizontal Gas Furnaces have been chosen. Specifically the
R801PA050314M*A model has been chosen. Highlighted features of the model can
be found in the table below:
Date MaxTemp(°F) MeanTemp(°F) LowTemp(°F) Date MaxTemp(°F) MeanTemp(°F) LowTemp(°F)
1/23/13 20 16 11 1/23/13 29450.928 31905.172 34972.977 LoadRequirment(BTU/hr)
Cfm(ft3/m)
LoadRequirment(BTU/hr)
Cfm(ft3/m)
Cfm(ft3/m)
Cfm(ft3/m)
Cfm(ft3/m)
2666.46
45.72119342
Bedroom
2ndFloor
4914.54
84.26851852
4886.61
83.78960905
1stFloor
3040.95
LivingRoom
Bedroom
DiningArea+Kitchen
Bedroom2
3rdFloor
2964.57
50.83281893
5256.54
90.13271605
LivingRoom+Kitchen
599.6738169
OutdoorTempratures OverallLoadRequirment(BTU/ft2h°F)
5491.38 5751.927
94.15946502 98.62700617
TotalAirflowRequirment
4thFloor
Bedroom Bedroom2
52.14248971

17
Table 4 & 5 Main Specifications for Chosen Natural Gas Furnace [7]
The furnace supplies 40,000
𝐵𝑇𝑈
ℎ𝑟
and an airflow rate of 651cfm while also delivering
0.7in.wg of static pressure. This all occurs at the low fan speed setting. Thus, the
furnace supplies the required heat load and airflow rate while using natural gas as
its fuel. Furthermore, this model delivers the air in an upflow manner. This allows
the furnace to be placed in the basement space of the Brownstone. This concludes
the analysis on heating loads and the selection of the heat source.
Duct Network
Next the required rectangular duct system will be sized in order to properly deliver
the heated air to the rooms. There are several parameters that are already known in
relation to the duct system. It is obvious that the working fluid of the system will be
air. The required airflow rate for the entire system and per room can be found in
Table 4. Furthermore the furnace provides 0.7in.wg of static pressure. Total friction
loss will be kept around 0.1in.wg per 100ft of ductwork which is a industry
standard. The duct system will be constructed with Galvanized steel metal. This

18
material is usually used to construct air duct systems making fabrication easier, and
material readily available. The duct system will be connected to the furnace with a
belmouth entrance to reduce friction losses. Branch fittings will be 45° wyes, and
elbows will be 90° pleated to further reduce friction losses. Rectangular duct aspect
ratios will be kept below 4 to comply with industry standards. No diffusers will be
utilized in this analysis for simplicity. Air will be delivered to the rooms from
openings in the ductwork. The furnace will be placed directly in the path of the
hallway a foot away from the front of the Brownstone. This will allow the ductwork
to run vertically up to the 4th floor while maximizing space in the Brownstone. A
duct system should not obstruct any living space. The ductwork will branch off on
every floor underneath the ceilings. Because the ductwork is exposed to living areas
a low-velocity duct system must be designed. Therefore the maximum air velocity in
the ducts should not exceed 1200fpm. This would provide a low-noise low-vibration
system. Openings in the ductwork will be placed in the center areas of each room to
provide heating. For this preliminary analysis a return less system will be
considered for simplicity purposes. Lastly, ductwork will be considered to be well
insulated. Meaning that no heat loss will occur from the ducts themselves. Heat will
only be transferred through the opening in the ducts. A drawing of the ductwork
system can be found in the figures below:

19
Overview Schematic of Developed Duct Network
Figure 19 Schematic of Ductwork Network Through the Four Floors from the Basement. Image is Shown
from a Side view of the Brownstone

20
Schematics of Developed Duct Networks for Each Floor
Figure 20 Schematics of Ductwork Network Running Through Each Floor to Heated Areas. Image is
shown from an Overhead View

21
Because the dimensions of the Brownstone are already known lengths of the ducts
can easily be determined. These lengths and airflow rates are represented in the
table below:
Table 6 Lengths and Airflow Rates of Duct Sections in Duct Network
Using the industry standard of 0.1in.wg per 100ft for appropriate friction losses and
the known flow rates the diameters and airflow velocities can be found for straight
galvanized steel ducts. It is noted that these diameters will be converted to
rectangular dimensions. Both of these tasks will be completed using duct-sizing
techniques. The dimensions and air flow rates of the straight galvanized steel ducts
can be found below. It is noted that sizing values are found using appropriate sizing
charts.
Section Number(#)
1
2
3
4
4.1
4.2
5
5.1
5.2
6
6.1
6.2
6.3
6.4
6.5
6.6
7
7.1
7.2
7.3
7.4
7.5
7.6
82.62
67.38
52.14
15.24
15.24
15.24
90.12
45.07
45.07
25.42
25.42
97.86
98.6
168.06
84.3
83.8
140.96
115.54
13
21.04
1
1
1
600
502.14
361.18
192.78
94.2
8.21
1
1
1
7.5
6.67
6.25
42.79
1
10.74
10.73
18.95
Length(ft) Cfm(ft3
/m)
Lengths and Airflow Rates of Duct Sections
12.73
9.1
9.5
17.33
42.75
1

22
Table 7 Diameters and Airflow Velocities for Straight Galvanized Ducts
Using appropriate sizing charts and an aspect ratio lower than 4 the equivalent
rectangular duct dimensions can be found. These values are summarized in the
tables below:
Section Number(#)
1
2
3
4
4.1
4.2
5
5.1
5.2
6
6.1
6.2
6.3
6.4
6.5
6.6
7
7.1
7.2
7.3
7.4
7.5
7.6
4 300
4 300
4 300
6 400
5 500
5 300
4 300
4 300
6 500
6 450
4 500
4 500
6 400
7 530
6 560
6 500
7 600
6 400
10 650
8 580
6 500
Diameters and Airflow Velocities for Straight Galvanized Ducts
Diameter(in) Flow Velocity(fpm)
12 800
11 780

23
Table 8Type equation here. Converted Rectangular Dimensions of Duct Sections and Airflow Velocities in
Duct Network
Finally, using the equivalent length of the longest branch the supplied static
pressure from the furnace can be verified. If the largest friction loss in the system is
utilized the largest required static pressure can be determined. Thus, the furnace
will not have an issue distributing air through smaller duct branches. The equivalent
length of the longest branch is 154.41ft(4). Thus, the required static pressure is
0.151in.wg(5). This confirms that the furnaces supplied static pressure of 0.7in.wg is
sufficient. It is noted that for the very low airflow rates and corresponding loads the
ducts are slightly oversized. This is due to the lack of sizing data for very low flow
rates. For energy saving considerations these ducts should be resized using
appropriate data. This concludes the preliminary analysis of the ductwork system.
Conclusion
The heating system for a four story brownstone in the New York City area was
successfully analyzed and developed. The representative temperature fluctuations
in 2013 were accurately depicted in Figures (5-18). The calculated heat loads and
airflow requirement values are acceptable when considering the large assumptions
that were made when developing the system. It is noted for a complete final analysis
Section Number(#)
1
2
3
4
4.1
4.2
5
5.1
5.2
6
6.1
6.2
6.3
6.4
6.5
6.6
7
7.1
7.2
7.3
7.4
7.5
7.6
6x6 300
6x6 300
6x6 300
6x6 400
6x6 500
6x6 300
6x6 300
6x6 300
6x6 500
6x6 450
6x6 500
6x6 500
6x6 400
7x6 530
6x6 560
6x6 500
6.25 600
6x6 400
11x8 650
9x6 580
6x6 500
Rectangular Dimesnions of Duct Section and Airflow Velocities
Rectangular Dimensions(inxin) Flow Velocity(fpm)
11x11 800
13x8 780

24
infiltration, ventilation, and the effect of the 1st level being partially underground
must be considered. Furthermore, heat transfer analysis to the other neighboring
Brownstones must be considered. In addition for energy consumption analysis solar
heat gain, heat storage of the building, and internal heat gain must be considered.
The chosen furnace successfully supplied the heat load, airflow, and static pressure
requirements. The ductwork was successfully developed to utilize the natural gas
furnace. Maximum flow velocity requirements were met for a residential building.
This shows that the ductwork will be quiet enough for the Brownstone.
Furthermore, the aspect ratios for all rectangular ducts were kept within industry
standards. This eliminated excessive losses from the system. As stated before the
ducts in very low airflow areas were slightly oversized. In order to increase
efficiency of the system and limit losses these ducts should be resized using
appropriate charts. Ultimately the heating system fulfills all requirements for a
preliminary analysis. This concludes the report.

25
Appendix
Sample Calculations
1) 𝑞 = 𝑈𝐴 𝑠𝑢𝑚 ,𝑚𝑎𝑡𝑒𝑟𝑖𝑎𝑙∆𝑇 = 96.34∆𝑇
𝑈𝐴 𝑠𝑢𝑚 ,𝑚𝑎𝑡𝑒𝑟𝑖𝑎𝑙 = 𝑈𝐴 𝑏𝑎𝑐𝑘𝑤𝑎𝑙𝑙 + 𝑈𝐴 𝑤𝑖𝑛𝑑𝑜𝑤𝑠 + 𝑈𝐴 𝑠𝑘𝑦𝑙𝑖𝑔ℎ𝑡𝑠 + 𝑈𝐴 𝑟𝑜𝑜𝑓 = 96.34 𝐵𝑇𝑈
ℎ℉
𝑈𝐴 𝑏𝑎𝑐𝑘𝑤𝑎𝑙𝑙 = 0.05 ∗ 114.92 𝐵𝑇𝑈
ℎ℉
𝑈𝐴 𝑤𝑖𝑛𝑑𝑜𝑤𝑠 = 0.25 ∗ 320 𝐵𝑇𝑈
ℎ℉
𝑈𝐴 𝑠𝑘𝑦𝑙𝑖𝑔ℎ𝑡𝑠 = 0.25 ∗ 7 𝐵𝑇𝑈
ℎ℉
𝑈𝐴 𝑟𝑜𝑜𝑓 = 0.04 ∗ 210.243 𝐵𝑇𝑈
ℎ℉
It is noted that this is a sample calculation of the heat loss equation developed for the
4th floor bedroom. This method is utilized many more times to obtain heat loss
equations.
2) 𝑞𝑙𝑎𝑟𝑔𝑒𝑠𝑡 = 𝑈𝐴 𝑠𝑢𝑚 ,𝑡𝑜𝑡𝑎𝑙 𝑠𝑡𝑟𝑢𝑐𝑡𝑢𝑟𝑒 ∆𝑇 = 34971.977 𝐵𝑇𝑈
ℎ
𝑈𝐴 𝑠𝑢𝑚 ,𝑡𝑜𝑡𝑎𝑙 𝑠𝑡𝑟𝑢𝑐𝑡𝑢𝑟𝑒 = 613.56 𝐵𝑇𝑈
ℎ℉
∆𝑇 = ( 𝑇𝑖 − 𝑇𝑜) = 57℉
𝑇𝑖 = 68℉
𝑇𝑜 = 11℉
It is noted that this is a sample calculation for the Overall Heat Loss of the entire
building on the coldest day of the year. This method is utilized many more times in the
analysis to obtain heat loss values.
3) 𝑐𝑓𝑚 𝑡𝑜𝑡𝑎𝑙 =
𝑞 𝑙𝑎𝑟𝑔𝑒𝑠𝑡
1.08∆𝑇
= 599.67 𝑓𝑡3
𝑚
𝑞𝑙𝑎𝑟𝑔𝑒𝑠𝑡 = 34971.977 𝐵𝑇𝑈
ℎ
∆𝑇 = ( 𝑇𝑖 − 𝑇𝑜) = 57℉
𝑇𝑖 = 68℉
𝑇𝑜 = 11℉
It is noted that this is a sample calculation in order to find the overall cfm requirement
for the entire building. This method was utilized many more times in order to obtain
cfm values.
4) 𝐿 𝑒,𝑡𝑜𝑡𝑎𝑙 = 𝐿 𝑠𝑡𝑟𝑎𝑖𝑔ℎ𝑡 + 𝐿 𝑒𝑛𝑡 + 𝐿 𝑤𝑦𝑒,𝑡ℎ𝑟𝑢 + 𝐿 𝑐𝑜𝑛𝑡𝑟 + 𝐿 𝑤𝑦𝑒,𝑡ℎ𝑟𝑢 + 𝐿 𝑐𝑜𝑛𝑡𝑟 + 𝐿 𝑤𝑦𝑒,𝑡ℎ𝑟𝑢 +
𝐿 𝑐𝑜𝑛𝑡𝑟 + 𝐿90 + 𝐿 𝑤𝑦𝑒,𝑡ℎ𝑟𝑜𝑢𝑔ℎ + 𝐿 𝑐𝑜𝑛𝑡𝑟 = 154.41𝑓𝑡
𝐿 𝑠𝑡𝑟𝑎𝑖𝑔ℎ𝑡 = 91.41𝑓𝑡

26
𝐿 𝑒𝑛𝑡 = 12𝑓𝑡
𝐿 𝑤𝑦𝑒,𝑡ℎ𝑟𝑢 = 8𝑓𝑡
𝐿 𝑐𝑜𝑛𝑡𝑟 = 4𝑓𝑡
𝐿 𝑤𝑦𝑒,𝑡ℎ𝑟𝑢 = 7.5𝑓𝑡
𝐿 𝑐𝑜𝑛𝑡𝑟 = 3.5𝑓𝑡
𝐿 𝑤𝑦𝑒,𝑡ℎ𝑟𝑢 = 7𝑓𝑡
𝐿90 = 10𝑓𝑡
𝐿 𝑤𝑦𝑒,𝑡ℎ𝑟𝑜𝑢𝑔ℎ = 5𝑓𝑡
5) ∆𝑃 𝑑𝑢𝑐𝑡 =
0.1𝑖𝑛.𝑤𝑔
100𝑓𝑡
∗ 𝐿 𝑒,𝑡𝑜𝑡𝑎𝑙 = 0.154𝑖𝑛. 𝑤𝑔
𝐿 𝑒,𝑡𝑜𝑡𝑎𝑙 = 154.41𝑓𝑡

27
Code Developed for Heating Load Analysis
Year
Date Max Temp (°F) Mean Temp (°F) Low Temp (°F) Date Max Temp (°F) Mean Temp (°F) Low Temp (°F)
1/1/13 40 33 26 1/1/13 17179.708 21474.635 25769.562
1/2/13 33 28 22 1/2/13 21474.635 24542.44 28223.806
1/3/13 32 28 24 1/3/13 22088.196 24542.44 26996.684
1/4/13 37 34 30 1/4/13 19020.391 20861.074 23315.318
1/5/13 42 37 32 1/5/13 15952.586 19020.391 22088.196
1/6/13 46 40 34 1/6/13 13498.342 17179.708 20861.074
1/7/13 45 41 37 1/7/13 14111.903 16566.147 19020.391
1/8/13 48 42 35 1/8/13 12271.22 15952.586 20247.513
1/9/13 49 44 39 1/9/13 11657.659 14725.464 17793.269
1/10/13 47 44 40 1/10/13 12884.781 14725.464 17179.708
1/11/13 46 42 37 1/11/13 13498.342 15952.586 19020.391
1/12/13 47 45 42 1/12/13 12884.781 14111.903 15952.586
1/13/13 50 47 43 1/13/13 11044.098 12884.781 15339.025
1/14/13 56 47 38 1/14/13 7362.732 12884.781 18406.83
1/15/13 38 37 35 1/15/13 18406.83 19020.391 20247.513
1/16/13 37 35 32 1/16/13 19020.391 20247.513 22088.196
1/17/13 43 39 35 1/17/13 15339.025 17793.269 20247.513
1/18/13 35 30 25 1/18/13 20247.513 23315.318 26383.123
1/19/13 51 41 30 1/19/13 10430.537 16566.147 23315.318
1/20/13 53 42 30 1/20/13 9203.415 15952.586 23315.318
1/21/13 32 29 26 1/21/13 22088.196 23928.879 25769.562
1/22/13 27 20 13 1/22/13 25156.001 29450.928 33745.855
1/23/13 20 16 11 1/23/13 29450.928 31905.172 34972.977
1/24/13 22 17 12 1/24/13 28223.806 31291.611 34359.416
1/25/13 24 19 13 1/25/13 26996.684 30064.489 33745.855
1/26/13 27 21 15 1/26/13 25156.001 28837.367 32518.733
1/27/13 34 27 19 1/27/13 20861.074 25156.001 30064.489
1/28/13 36 33 29 1/28/13 19633.952 21474.635 23928.879
1/29/13 49 43 36 1/29/13 11657.659 15339.025 19633.952
1/30/13 59 49 39 1/30/13 5522.049 11657.659 17793.269
1/31/13 61 46 30 1/31/13 4294.927 13498.342 23315.318
2/1/13 31 28 24 2/1/13 22701.757 24542.44 26996.684
2/2/13 29 24 19 2/2/13 23928.879 26996.684 30064.489
2/3/13 30 27 24 2/3/13 23315.318 25156.001 26996.684
2/4/13 30 27 23 2/4/13 23315.318 25156.001 27610.245
2/5/13 32 30 28 2/5/13 22088.196 23315.318 24542.44
2/6/13 39 34 29 2/6/13 17793.269 20861.074 23928.879
2/7/13 32 29 26 2/7/13 22088.196 23928.879 25769.562
2/8/13 34 31 27 2/8/13 20861.074 22701.757 25156.001
2/9/13 32 27 21 2/9/13 22088.196 25156.001 28837.367
2/10/13 36 27 18 2/10/13 19633.952 25156.001 30678.05
2/11/13 45 40 34 2/11/13 14111.903 17179.708 20861.074
2/12/13 44 40 36 2/12/13 14725.464 17179.708 19633.952
2/13/13 44 39 33 2/13/13 14725.464 17793.269 21474.635
2/14/13 46 40 33 2/14/13 13498.342 17179.708 21474.635
2/15/13 55 46 37 2/15/13 7976.293 13498.342 19020.391
2/16/13 41 36 31 2/16/13 16566.147 19633.952 22701.757
2/17/13 32 25 18 2/17/13 22088.196 26383.123 30678.05
2/18/13 35 26 17 2/18/13 20247.513 25769.562 31291.611
2/19/13 49 41 33 2/19/13 11657.659 16566.147 21474.635
2/20/13 38 32 25 2/20/13 18406.83 22088.196 26383.123
2/21/13 34 29 24 2/21/13 20861.074 23928.879 26996.684
2/22/13 38 32 25 2/22/13 18406.83 22088.196 26383.123
2/23/13 42 39 36 2/23/13 15952.586 17793.269 19633.952
2/24/13 47 41 34 2/24/13 12884.781 16566.147 20861.074
2/25/13 45 39 32 2/25/13 14111.903 17793.269 22088.196
2/26/13 44 40 35 2/26/13 14725.464 17179.708 20247.513
2/27/13 47 42 36 2/27/13 12884.781 15952.586 19633.952
2/28/13 51 45 39 2/28/13 10430.537 14111.903 17793.269
3/1/13 45 41 36 3/1/13 14111.903 16566.147 19633.952
3/2/13 40 36 31 3/2/13 17179.708 19633.952 22701.757
3/3/13 40 35 29 3/3/13 17179.708 20247.513 23928.879
3/4/13 42 35 27 3/4/13 15952.586 20247.513 25156.001
3/5/13 49 40 31 3/5/13 11657.659 17179.708 22701.757
3/6/13 42 40 38 3/6/13 15952.586 17179.708 18406.83
3/7/13 38 36 33 3/7/13 18406.83 19633.952 21474.635
3/8/13 42 37 31 3/8/13 15952.586 19020.391 22701.757
3/9/13 55 45 35 3/9/13 7976.293 14111.903 20247.513
3/10/13 50 43 36 3/10/13 11044.098 15339.025 19633.952
3/11/13 54 47 40 3/11/13 8589.854 12884.781 17179.708
3/12/13 57 50 43 3/12/13 6749.171 11044.098 15339.025
3/13/13 52 45 38 3/13/13 9816.976 14111.903 18406.83
3/14/13 41 35 29 3/14/13 16566.147 20247.513 23928.879
3/15/13 47 39 30 3/15/13 12884.781 17793.269 23315.318
3/16/13 41 37 32 3/16/13 16566.147 19020.391 22088.196
3/17/13 38 34 29 3/17/13 18406.83 20861.074 23928.879
3/18/13 35 32 28 3/18/13 20247.513 22088.196 24542.44
3/19/13 43 38 33 3/19/13 15339.025 18406.83 21474.635
3/20/13 45 39 32 3/20/13 14111.903 17793.269 22088.196
3/21/13 40 35 30 3/21/13 17179.708 20247.513 23315.318
3/22/13 41 35 28 3/22/13 16566.147 20247.513 24542.44
3/23/13 46 39 32 3/23/13 13498.342 17793.269 22088.196
3/24/13 47 40 33 3/24/13 12884.781 17179.708 21474.635
3/25/13 40 38 36 3/25/13 17179.708 18406.83 19633.952
3/26/13 53 45 37 3/26/13 9203.415 14111.903 19020.391
3/27/13 53 45 36 3/27/13 9203.415 14111.903 19633.952
3/28/13 51 44 37 3/28/13 10430.537 14725.464 19020.391
3/29/13 55 48 40 3/29/13 7976.293 12271.22 17179.708
3/30/13 59 50 40 3/30/13 5522.049 11044.098 17179.708
3/31/13 54 49 44 3/31/13 8589.854 11657.659 14725.464
4/1/13 62 50 37 4/1/13 3681.366 11044.098 19020.391
4/2/13 43 38 33 4/2/13 15339.025 18406.83 21474.635
4/3/13 46 40 33 4/3/13 13498.342 17179.708 21474.635
4/4/13 53 43 33 4/4/13 9203.415 15339.025 21474.635
4/5/13 64 53 41 4/5/13 2454.244 9203.415 16566.147
4/6/13 52 44 35 4/6/13 9816.976 14725.464 20247.513
4/7/13 55 48 40 4/7/13 7976.293 12271.22 17179.708
4/8/13 73 62 51 4/8/13 -3067.805 3681.366 10430.537
Outdoor Temperatures Overall Load Requirement (BTU/hr)

28
4/9/13 82 67 51 4/9/13 -8589.854 613.561 10430.537
4/10/13 74 65 55 4/10/13 -3681.366 1840.683 7976.293
4/11/13 60 54 47 4/11/13 4908.488 8589.854 12884.781
4/12/13 47 44 41 4/12/13 12884.781 14725.464 16566.147
4/13/13 58 50 41 4/13/13 6135.61 11044.098 16566.147
4/14/13 57 52 46 4/14/13 6749.171 9816.976 13498.342
4/15/13 59 52 44 4/15/13 5522.049 9816.976 14725.464
4/16/13 63 55 47 4/16/13 3067.805 7976.293 12884.781
4/17/13 71 63 55 4/17/13 -1840.683 3067.805 7976.293
4/18/13 59 55 51 4/18/13 5522.049 7976.293 10430.537
4/19/13 71 63 55 4/19/13 -1840.683 3067.805 7976.293
4/20/13 60 52 43 4/20/13 4908.488 9816.976 15339.025
4/21/13 55 46 37 4/21/13 7976.293 13498.342 19020.391
4/22/13 55 48 41 4/22/13 7976.293 12271.22 16566.147
4/23/13 53 47 41 4/23/13 9203.415 12884.781 16566.147
4/24/13 69 57 44 4/24/13 -613.561 6749.171 14725.464
4/25/13 66 56 46 4/25/13 1227.122 7362.732 13498.342
4/26/13 67 59 50 4/26/13 613.561 5522.049 11044.098
4/27/13 71 60 48 4/27/13 -1840.683 4908.488 12271.22
4/28/13 69 60 51 4/28/13 -613.561 4908.488 10430.537
4/29/13 57 55 52 4/29/13 6749.171 7976.293 9816.976
4/30/13 68 60 51 4/30/13 0 4908.488 10430.537
5/1/13 69 58 47 5/1/13 -613.561 6135.61 12884.781
5/2/13 72 61 49 5/2/13 -2454.244 4294.927 11657.659
5/3/13 66 58 49 5/3/13 1227.122 6135.61 11657.659
5/4/13 69 59 48 5/4/13 -613.561 5522.049 12271.22
5/5/13 64 55 46 5/5/13 2454.244 7976.293 13498.342
5/6/13 69 58 46 5/6/13 -613.561 6135.61 13498.342
5/7/13 74 63 52 5/7/13 -3681.366 3067.805 9816.976
5/8/13 63 59 55 5/8/13 3067.805 5522.049 7976.293
5/9/13 68 61 54 5/9/13 0 4294.927 8589.854
5/10/13 79 69 59 5/10/13 -6749.171 -613.561 5522.049
5/11/13 70 66 61 5/11/13 -1227.122 1227.122 4294.927
5/12/13 70 61 51 5/12/13 -1227.122 4294.927 10430.537
5/13/13 58 52 45 5/13/13 6135.61 9816.976 14111.903
5/14/13 61 52 42 5/14/13 4294.927 9816.976 15952.586
5/15/13 69 62 54 5/15/13 -613.561 3681.366 8589.854
5/16/13 79 71 62 5/16/13 -6749.171 -1840.683 3681.366
5/17/13 72 65 58 5/17/13 -2454.244 1840.683 6135.61
5/18/13 65 61 56 5/18/13 1840.683 4294.927 7362.732
5/19/13 59 57 55 5/19/13 5522.049 6749.171 7976.293
5/20/13 79 69 58 5/20/13 -6749.171 -613.561 6135.61
5/21/13 86 77 68 5/21/13 -11044.098 -5522.049 0
5/22/13 78 69 59 5/22/13 -6135.61 -613.561 5522.049
5/23/13 80 72 64 5/23/13 -7362.732 -2454.244 2454.244
5/24/13 65 55 45 5/24/13 1840.683 7976.293 14111.903
5/25/13 54 50 45 5/25/13 8589.854 11044.098 14111.903
5/26/13 66 57 48 5/26/13 1227.122 6749.171 12271.22
5/27/13 73 62 51 5/27/13 -3067.805 3681.366 10430.537
5/28/13 68 62 56 5/28/13 0 3681.366 7362.732
5/29/13 82 70 58 5/29/13 -8589.854 -1227.122 6135.61
5/30/13 90 81 72 5/30/13 -13498.342 -7976.293 -2454.244
5/31/13 90 83 75 5/31/13 -13498.342 -9203.415 -4294.927
6/1/13 90 82 73 6/1/13 -13498.342 -8589.854 -3067.805
6/2/13 88 79 69 6/2/13 -12271.22 -6749.171 -613.561
6/3/13 78 72 66 6/3/13 -6135.61 -2454.244 1227.122
6/4/13 75 66 57 6/4/13 -4294.927 1227.122 6749.171
6/5/13 74 66 58 6/5/13 -3681.366 1227.122 6135.61
6/6/13 70 65 59 6/6/13 -1227.122 1840.683 5522.049
6/7/13 63 61 59 6/7/13 3067.805 4294.927 5522.049
6/8/13 77 67 57 6/8/13 -5522.049 613.561 6749.171
6/9/13 80 72 63 6/9/13 -7362.732 -2454.244 3067.805
6/10/13 70 66 62 6/10/13 -1227.122 1227.122 3681.366
6/11/13 80 72 64 6/11/13 -7362.732 -2454.244 2454.244
6/12/13 76 71 65 6/12/13 -4908.488 -1840.683 1840.683
6/13/13 69 62 55 6/13/13 -613.561 3681.366 7976.293
6/14/13 72 63 53 6/14/13 -2454.244 3067.805 9203.415
6/15/13 80 71 61 6/15/13 -7362.732 -1840.683 4294.927
6/16/13 80 73 65 6/16/13 -7362.732 -3067.805 1840.683
6/17/13 84 77 69 6/17/13 -9816.976 -5522.049 -613.561
6/18/13 84 74 64 6/18/13 -9816.976 -3681.366 2454.244
6/19/13 77 68 59 6/19/13 -5522.049 0 5522.049
6/20/13 80 71 62 6/20/13 -7362.732 -1840.683 3681.366
6/21/13 82 73 64 6/21/13 -8589.854 -3067.805 2454.244
6/22/13 84 75 65 6/22/13 -9816.976 -4294.927 1840.683
6/23/13 88 79 70 6/23/13 -12271.22 -6749.171 -1227.122
6/24/13 92 83 74 6/24/13 -14725.464 -9203.415 -3681.366
6/25/13 91 82 73 6/25/13 -14111.903 -8589.854 -3067.805
6/26/13 85 80 74 6/26/13 -10430.537 -7362.732 -3681.366
6/27/13 86 80 73 6/27/13 -11044.098 -7362.732 -3067.805
6/28/13 85 79 73 6/28/13 -10430.537 -6749.171 -3067.805
6/29/13 83 77 71 6/29/13 -9203.415 -5522.049 -1840.683
6/30/13 86 80 73 6/30/13 -11044.098 -7362.732 -3067.805
7/1/13 77 75 72 7/1/13 -5522.049 -4294.927 -2454.244
7/2/13 82 77 72 7/2/13 -8589.854 -5522.049 -2454.244
7/3/13 83 78 73 7/3/13 -9203.415 -6135.61 -3067.805
7/4/13 87 81 75 7/4/13 -11657.659 -7976.293 -4294.927
7/5/13 90 83 76 7/5/13 -13498.342 -9203.415 -4908.488
7/6/13 92 85 78 7/6/13 -14725.464 -10430.537 -6135.61
7/7/13 92 85 78 7/7/13 -14725.464 -10430.537 -6135.61
7/8/13 89 81 73 7/8/13 -12884.781 -7976.293 -3067.805
7/9/13 88 81 74 7/9/13 -12271.22 -7976.293 -3681.366
7/10/13 85 80 75 7/10/13 -10430.537 -7362.732 -4294.927
7/11/13 84 80 76 7/11/13 -9816.976 -7362.732 -4908.488
7/12/13 77 73 68 7/12/13 -5522.049 -3067.805 0
7/13/13 81 74 67 7/13/13 -7976.293 -3681.366 613.561
7/14/13 90 82 74 7/14/13 -13498.342 -8589.854 -3681.366
7/15/13 94 86 78 7/15/13 -15952.586 -11044.098 -6135.61
7/16/13 94 86 77 7/16/13 -15952.586 -11044.098 -5522.049

29
7/17/13 97 88 79 7/17/13 -17793.269 -12271.22 -6749.171
7/18/13 98 90 81 7/18/13 -18406.83 -13498.342 -7976.293
7/19/13 96 90 83 7/19/13 -17179.708 -13498.342 -9203.415
7/20/13 93 87 81 7/20/13 -15339.025 -11657.659 -7976.293
7/21/13 89 83 76 7/21/13 -12884.781 -9203.415 -4908.488
7/22/13 86 81 75 7/22/13 -11044.098 -7976.293 -4294.927
7/23/13 87 80 73 7/23/13 -11657.659 -7362.732 -3067.805
7/24/13 83 76 68 7/24/13 -9203.415 -4908.488 0
7/25/13 68 66 64 7/25/13 0 1227.122 2454.244
7/26/13 83 74 65 7/26/13 -9203.415 -3681.366 1840.683
7/27/13 82 76 70 7/27/13 -8589.854 -4908.488 -1227.122
7/28/13 78 74 70 7/28/13 -6135.61 -3681.366 -1227.122
7/29/13 85 77 69 7/29/13 -10430.537 -5522.049 -613.561
7/30/13 83 75 67 7/30/13 -9203.415 -4294.927 613.561
7/31/13 83 75 67 7/31/13 -9203.415 -4294.927 613.561
8/1/13 76 71 66 8/1/13 -4908.488 -1840.683 1227.122
8/2/13 83 75 67 8/2/13 -9203.415 -4294.927 613.561
8/3/13 78 73 68 8/3/13 -6135.61 -3067.805 0
8/4/13 80 73 66 8/4/13 -7362.732 -3067.805 1227.122
8/5/13 78 70 62 8/5/13 -6135.61 -1227.122 3681.366
8/6/13 82 73 64 8/6/13 -8589.854 -3067.805 2454.244
8/7/13 80 75 70 8/7/13 -7362.732 -4294.927 -1227.122
8/8/13 81 76 70 8/8/13 -7976.293 -4908.488 -1227.122
8/9/13 85 80 74 8/9/13 -10430.537 -7362.732 -3681.366
8/10/13 83 77 70 8/10/13 -9203.415 -5522.049 -1227.122
8/11/13 81 73 65 8/11/13 -7976.293 -3067.805 1840.683
8/12/13 82 76 70 8/12/13 -8589.854 -4908.488 -1227.122
8/13/13 77 73 68 8/13/13 -5522.049 -3067.805 0
8/14/13 74 68 61 8/14/13 -3681.366 0 4294.927
8/15/13 78 69 59 8/15/13 -6135.61 -613.561 5522.049
8/16/13 82 73 64 8/16/13 -8589.854 -3067.805 2454.244
8/17/13 84 74 64 8/17/13 -9816.976 -3681.366 2454.244
8/18/13 76 72 68 8/18/13 -4908.488 -2454.244 0
8/19/13 79 73 66 8/19/13 -6749.171 -3067.805 1227.122
8/20/13 88 78 68 8/20/13 -12271.22 -6135.61 0
8/21/13 90 81 72 8/21/13 -13498.342 -7976.293 -2454.244
8/22/13 78 75 71 8/22/13 -6135.61 -4294.927 -1840.683
8/23/13 82 77 71 8/23/13 -8589.854 -5522.049 -1840.683
8/24/13 80 73 65 8/24/13 -7362.732 -3067.805 1840.683
8/25/13 83 74 64 8/25/13 -9203.415 -3681.366 2454.244
8/26/13 84 76 68 8/26/13 -9816.976 -4908.488 0
8/27/13 87 79 71 8/27/13 -11657.659 -6749.171 -1840.683
8/28/13 86 79 71 8/28/13 -11044.098 -6749.171 -1840.683
8/29/13 80 76 71 8/29/13 -7362.732 -4908.488 -1840.683
8/30/13 85 78 70 8/30/13 -10430.537 -6135.61 -1227.122
8/31/13 86 80 73 8/31/13 -11044.098 -7362.732 -3067.805
9/1/13 84 80 75 9/1/13 -9816.976 -7362.732 -4294.927
9/2/13 82 78 74 9/2/13 -8589.854 -6135.61 -3681.366
9/3/13 82 75 68 9/3/13 -8589.854 -4294.927 0
9/4/13 82 74 65 9/4/13 -8589.854 -3681.366 1840.683
9/5/13 80 72 64 9/5/13 -7362.732 -2454.244 2454.244
9/6/13 72 65 57 9/6/13 -2454.244 1840.683 6749.171
9/7/13 80 70 59 9/7/13 -7362.732 -1227.122 5522.049
9/8/13 83 74 64 9/8/13 -9203.415 -3681.366 2454.244
9/9/13 73 65 57 9/9/13 -3067.805 1840.683 6749.171
9/10/13 87 78 68 9/10/13 -11657.659 -6135.61 0
9/11/13 96 87 77 9/11/13 -17179.708 -11657.659 -5522.049
9/12/13 87 79 70 9/12/13 -11657.659 -6749.171 -1227.122
9/13/13 77 68 59 9/13/13 -5522.049 0 5522.049
9/14/13 67 61 54 9/14/13 613.561 4294.927 8589.854
9/15/13 73 62 51 9/15/13 -3067.805 3681.366 10430.537
9/16/13 73 65 56 9/16/13 -3067.805 1840.683 7362.732
9/17/13 65 58 50 9/17/13 1840.683 6135.61 11044.098
9/18/13 72 62 51 9/18/13 -2454.244 3681.366 10430.537
9/19/13 78 67 55 9/19/13 -6135.61 613.561 7976.293
9/20/13 79 70 60 9/20/13 -6749.171 -1227.122 4908.488
9/21/13 77 69 61 9/21/13 -5522.049 -613.561 4294.927
9/22/13 69 62 54 9/22/13 -613.561 3681.366 8589.854
9/23/13 66 58 50 9/23/13 1227.122 6135.61 11044.098
9/24/13 73 60 47 9/24/13 -3067.805 4908.488 12884.781
9/25/13 73 63 52 9/25/13 -3067.805 3067.805 9816.976
9/26/13 71 65 58 9/26/13 -1840.683 1840.683 6135.61
9/27/13 69 63 57 9/27/13 -613.561 3067.805 6749.171
9/28/13 73 65 56 9/28/13 -3067.805 1840.683 7362.732
9/29/13 72 65 57 9/29/13 -2454.244 1840.683 6749.171
9/30/13 75 66 56 9/30/13 -4294.927 1227.122 7362.732
10/1/13 82 71 59 10/1/13 -8589.854 -1840.683 5522.049
10/2/13 83 74 64 10/2/13 -9203.415 -3681.366 2454.244
10/3/13 78 71 63 10/3/13 -6135.61 -1840.683 3067.805
10/4/13 86 76 66 10/4/13 -11044.098 -4908.488 1227.122
10/5/13 76 70 64 10/5/13 -4908.488 -1227.122 2454.244
10/6/13 70 68 65 10/6/13 -1227.122 0 1840.683
10/7/13 76 68 60 10/7/13 -4908.488 0 4908.488
10/8/13 67 61 54 10/8/13 613.561 4294.927 8589.854
10/9/13 62 58 53 10/9/13 3681.366 6135.61 9203.415
10/10/13 65 60 54 10/10/13 1840.683 4908.488 8589.854
10/11/13 68 64 60 10/11/13 0 2454.244 4908.488
10/12/13 72 66 60 10/12/13 -2454.244 1227.122 4908.488
10/13/13 65 61 56 10/13/13 1840.683 4294.927 7362.732
10/14/13 66 59 52 10/14/13 1227.122 5522.049 9816.976
10/15/13 72 63 53 10/15/13 -2454.244 3067.805 9203.415
10/16/13 67 62 56 10/16/13 613.561 3681.366 7362.732
10/17/13 73 67 61 10/17/13 -3067.805 613.561 4294.927
10/18/13 68 62 55 10/18/13 0 3681.366 7976.293
10/19/13 64 58 52 10/19/13 2454.244 6135.61 9816.976
10/20/13 63 57 50 10/20/13 3067.805 6749.171 11044.098
10/21/13 66 58 50 10/21/13 1227.122 6135.61 11044.098
10/22/13 67 59 51 10/22/13 613.561 5522.049 10430.537
10/23/13 55 50 45 10/23/13 7976.293 11044.098 14111.903
10/24/13 54 48 41 10/24/13 8589.854 12271.22 16566.147
10/25/13 53 47 40 10/25/13 9203.415 12884.781 17179.708

30
10/26/13 55 48 41 10/26/13 7976.293 12271.22 16566.147
10/27/13 58 52 46 10/27/13 6135.61 9816.976 13498.342
10/28/13 61 52 43 10/28/13 4294.927 9816.976 15339.025
10/29/13 56 50 44 10/29/13 7362.732 11044.098 14725.464
10/30/13 60 54 47 10/30/13 4908.488 8589.854 12884.781
10/31/13 66 60 53 10/31/13 1227.122 4908.488 9203.415
11/1/13 70 65 59 11/1/13 -1227.122 1840.683 5522.049
11/2/13 68 62 55 11/2/13 0 3681.366 7976.293
11/3/13 55 46 37 11/3/13 7976.293 13498.342 19020.391
11/4/13 46 41 35 11/4/13 13498.342 16566.147 20247.513
11/5/13 55 48 41 11/5/13 7976.293 12271.22 16566.147
11/6/13 61 55 49 11/6/13 4294.927 7976.293 11657.659
11/7/13 64 54 44 11/7/13 2454.244 8589.854 14725.464
11/8/13 50 45 40 11/8/13 11044.098 14111.903 17179.708
11/9/13 50 44 38 11/9/13 11044.098 14725.464 18406.83
11/10/13 61 53 44 11/10/13 4294.927 9203.415 14725.464
11/11/13 53 48 43 11/11/13 9203.415 12271.22 15339.025
11/12/13 52 42 31 11/12/13 9816.976 15952.586 22701.757
11/13/13 39 34 29 11/13/13 17793.269 20861.074 23928.879
11/14/13 52 43 33 11/14/13 9816.976 15339.025 21474.635
11/15/13 57 51 44 11/15/13 6749.171 10430.537 14725.464
11/16/13 60 53 45 11/16/13 4908.488 9203.415 14111.903
11/17/13 60 56 51 11/17/13 4908.488 7362.732 10430.537
11/18/13 65 58 51 11/18/13 1840.683 6135.61 10430.537
11/19/13 51 44 36 11/19/13 10430.537 14725.464 19633.952
11/20/13 44 38 32 11/20/13 14725.464 18406.83 22088.196
11/21/13 52 44 35 11/21/13 9816.976 14725.464 20247.513
11/22/13 57 54 51 11/22/13 6749.171 8589.854 10430.537
11/23/13 54 43 31 11/23/13 8589.854 15339.025 22701.757
11/24/13 30 27 23 11/24/13 23315.318 25156.001 27610.245
11/25/13 35 29 23 11/25/13 20247.513 23928.879 27610.245
11/26/13 47 40 33 11/26/13 12884.781 17179.708 21474.635
11/27/13 62 49 35 11/27/13 3681.366 11657.659 20247.513
11/28/13 35 33 30 11/28/13 20247.513 21474.635 23315.318
11/29/13 39 34 29 11/29/13 17793.269 20861.074 23928.879
11/30/13 39 32 25 11/30/13 17793.269 22088.196 26383.123
12/1/13 49 43 36 12/1/13 11657.659 15339.025 19633.952
12/2/13 49 45 41 12/2/13 11657.659 14111.903 16566.147
12/3/13 53 46 38 12/3/13 9203.415 13498.342 18406.83
12/4/13 52 47 41 12/4/13 9816.976 12884.781 16566.147
12/5/13 60 54 48 12/5/13 4908.488 8589.854 12271.22
12/6/13 62 50 37 12/6/13 3681.366 11044.098 19020.391
12/7/13 41 37 32 12/7/13 16566.147 19020.391 22088.196
12/8/13 33 31 29 12/8/13 21474.635 22701.757 23928.879
12/9/13 39 35 31 12/9/13 17793.269 20247.513 22701.757
12/10/13 37 34 30 12/10/13 19020.391 20861.074 23315.318
12/11/13 33 30 27 12/11/13 21474.635 23315.318 25156.001
12/12/13 30 27 23 12/12/13 23315.318 25156.001 27610.245
12/13/13 35 29 23 12/13/13 20247.513 23928.879 27610.245
12/14/13 34 28 22 12/14/13 20861.074 24542.44 28223.806
12/15/13 40 35 30 12/15/13 17179.708 20247.513 23315.318
12/16/13 33 29 25 12/16/13 21474.635 23928.879 26383.123
12/17/13 32 28 24 12/17/13 22088.196 24542.44 26996.684
12/18/13 37 30 23 12/18/13 19020.391 23315.318 27610.245
12/19/13 47 39 30 12/19/13 12884.781 17793.269 23315.318
12/20/13 53 47 41 12/20/13 9203.415 12884.781 16566.147
12/21/13 65 58 51 12/21/13 1840.683 6135.61 10430.537
12/22/13 71 66 61 12/22/13 -1840.683 1227.122 4294.927
12/23/13 64 53 42 12/23/13 2454.244 9203.415 15952.586
12/24/13 42 34 26 12/24/13 15952.586 20861.074 25769.562
12/25/13 31 25 19 12/25/13 22701.757 26383.123 30064.489
12/26/13 36 33 30 12/26/13 19633.952 21474.635 23315.318
12/27/13 40 36 31 12/27/13 17179.708 19633.952 22701.757
12/28/13 55 46 36 12/28/13 7976.293 13498.342 19633.952
12/29/13 48 45 41 12/29/13 12271.22 14111.903 16566.147
12/30/13 45 34 23 12/30/13 14111.903 20861.074 27610.245
12/31/13 32 27 21 12/31/13 22088.196 25156.001 28837.367

31
Month
1/1/13 40 33 26 1/1/13 17179.708 21474.635 25769.562
1/2/13 33 28 22 1/2/13 21474.635 24542.44 28223.806
1/3/13 32 28 24 1/3/13 22088.196 24542.44 26996.684
1/4/13 37 34 30 1/4/13 19020.391 20861.074 23315.318
1/5/13 42 37 32 1/5/13 15952.586 19020.391 22088.196
1/6/13 46 40 34 1/6/13 13498.342 17179.708 20861.074
1/7/13 45 41 37 1/7/13 14111.903 16566.147 19020.391
1/8/13 48 42 35 1/8/13 12271.22 15952.586 20247.513
1/9/13 49 44 39 1/9/13 11657.659 14725.464 17793.269
1/10/13 47 44 40 1/10/13 12884.781 14725.464 17179.708
1/11/13 46 42 37 1/11/13 13498.342 15952.586 19020.391
1/12/13 47 45 42 1/12/13 12884.781 14111.903 15952.586
1/13/13 50 47 43 1/13/13 11044.098 12884.781 15339.025
1/14/13 56 47 38 1/14/13 7362.732 12884.781 18406.83
1/15/13 38 37 35 1/15/13 18406.83 19020.391 20247.513
1/16/13 37 35 32 1/16/13 19020.391 20247.513 22088.196
1/17/13 43 39 35 1/17/13 15339.025 17793.269 20247.513
1/18/13 35 30 25 1/18/13 20247.513 23315.318 26383.123
1/19/13 51 41 30 1/19/13 10430.537 16566.147 23315.318
1/20/13 53 42 30 1/20/13 9203.415 15952.586 23315.318
1/21/13 32 29 26 1/21/13 22088.196 23928.879 25769.562
1/22/13 27 20 13 1/22/13 25156.001 29450.928 33745.855
1/23/13 20 16 11 1/23/13 29450.928 31905.172 34972.977
1/24/13 22 17 12 1/24/13 28223.806 31291.611 34359.416
1/25/13 24 19 13 1/25/13 26996.684 30064.489 33745.855
1/26/13 27 21 15 1/26/13 25156.001 28837.367 32518.733
1/27/13 34 27 19 1/27/13 20861.074 25156.001 30064.489
1/28/13 36 33 29 1/28/13 19633.952 21474.635 23928.879
1/29/13 49 43 36 1/29/13 11657.659 15339.025 19633.952
1/30/13 59 49 39 1/30/13 5522.049 11657.659 17793.269
1/31/13 61 46 30 1/31/13 4294.927 13498.342 23315.318
January
Date MaxTemp(°F) MeanTemp(°F) LowTemp(°F) Date MaxTemp(°F) MeanTemp(°F) LowTemp(°F)
2/1/13 31 28 24 2/1/13 22701.757 24542.44 26996.684
2/2/13 29 24 19 2/2/13 23928.879 26996.684 30064.489
2/3/13 30 27 24 2/3/13 23315.318 25156.001 26996.684
2/4/13 30 27 23 2/4/13 23315.318 25156.001 27610.245
2/5/13 32 30 28 2/5/13 22088.196 23315.318 24542.44
2/6/13 39 34 29 2/6/13 17793.269 20861.074 23928.879
2/7/13 32 29 26 2/7/13 22088.196 23928.879 25769.562
2/8/13 34 31 27 2/8/13 20861.074 22701.757 25156.001
2/9/13 32 27 21 2/9/13 22088.196 25156.001 28837.367
2/10/13 36 27 18 2/10/13 19633.952 25156.001 30678.05
2/11/13 45 40 34 2/11/13 14111.903 17179.708 20861.074
2/12/13 44 40 36 2/12/13 14725.464 17179.708 19633.952
2/13/13 44 39 33 2/13/13 14725.464 17793.269 21474.635
2/14/13 46 40 33 2/14/13 13498.342 17179.708 21474.635
2/15/13 55 46 37 2/15/13 7976.293 13498.342 19020.391
2/16/13 41 36 31 2/16/13 16566.147 19633.952 22701.757
2/17/13 32 25 18 2/17/13 22088.196 26383.123 30678.05
2/18/13 35 26 17 2/18/13 20247.513 25769.562 31291.611
2/19/13 49 41 33 2/19/13 11657.659 16566.147 21474.635
2/20/13 38 32 25 2/20/13 18406.83 22088.196 26383.123
2/21/13 34 29 24 2/21/13 20861.074 23928.879 26996.684
2/22/13 38 32 25 2/22/13 18406.83 22088.196 26383.123
2/23/13 42 39 36 2/23/13 15952.586 17793.269 19633.952
2/24/13 47 41 34 2/24/13 12884.781 16566.147 20861.074
2/25/13 45 39 32 2/25/13 14111.903 17793.269 22088.196
2/26/13 44 40 35 2/26/13 14725.464 17179.708 20247.513
2/27/13 47 42 36 2/27/13 12884.781 15952.586 19633.952
2/28/13 51 45 39 2/28/13 10430.537 14111.903 17793.269
February
OutdoorTemperatures OverallLoadRequirement(BTU/hr)

32
3/1/13 45 41 36 3/1/13 14111.903 16566.147 19633.952
3/2/13 40 36 31 3/2/13 17179.708 19633.952 22701.757
3/3/13 40 35 29 3/3/13 17179.708 20247.513 23928.879
3/4/13 42 35 27 3/4/13 15952.586 20247.513 25156.001
3/5/13 49 40 31 3/5/13 11657.659 17179.708 22701.757
3/6/13 42 40 38 3/6/13 15952.586 17179.708 18406.83
3/7/13 38 36 33 3/7/13 18406.83 19633.952 21474.635
3/8/13 42 37 31 3/8/13 15952.586 19020.391 22701.757
3/9/13 55 45 35 3/9/13 7976.293 14111.903 20247.513
3/10/13 50 43 36 3/10/13 11044.098 15339.025 19633.952
3/11/13 54 47 40 3/11/13 8589.854 12884.781 17179.708
3/12/13 57 50 43 3/12/13 6749.171 11044.098 15339.025
3/13/13 52 45 38 3/13/13 9816.976 14111.903 18406.83
3/14/13 41 35 29 3/14/13 16566.147 20247.513 23928.879
3/15/13 47 39 30 3/15/13 12884.781 17793.269 23315.318
3/16/13 41 37 32 3/16/13 16566.147 19020.391 22088.196
3/17/13 38 34 29 3/17/13 18406.83 20861.074 23928.879
3/18/13 35 32 28 3/18/13 20247.513 22088.196 24542.44
3/19/13 43 38 33 3/19/13 15339.025 18406.83 21474.635
3/20/13 45 39 32 3/20/13 14111.903 17793.269 22088.196
3/21/13 40 35 30 3/21/13 17179.708 20247.513 23315.318
3/22/13 41 35 28 3/22/13 16566.147 20247.513 24542.44
3/23/13 46 39 32 3/23/13 13498.342 17793.269 22088.196
3/24/13 47 40 33 3/24/13 12884.781 17179.708 21474.635
3/25/13 40 38 36 3/25/13 17179.708 18406.83 19633.952
3/26/13 53 45 37 3/26/13 9203.415 14111.903 19020.391
3/27/13 53 45 36 3/27/13 9203.415 14111.903 19633.952
3/28/13 51 44 37 3/28/13 10430.537 14725.464 19020.391
3/29/13 55 48 40 3/29/13 7976.293 12271.22 17179.708
3/30/13 59 50 40 3/30/13 5522.049 11044.098 17179.708
3/31/13 54 49 44 3/31/13 8589.854 11657.659 14725.464
March
4/1/13 62 50 37 4/1/13 3681.366 11044.098 19020.391
4/2/13 43 38 33 4/2/13 15339.025 18406.83 21474.635
4/3/13 46 40 33 4/3/13 13498.342 17179.708 21474.635
4/4/13 53 43 33 4/4/13 9203.415 15339.025 21474.635
4/5/13 64 53 41 4/5/13 2454.244 9203.415 16566.147
4/6/13 52 44 35 4/6/13 9816.976 14725.464 20247.513
4/7/13 55 48 40 4/7/13 7976.293 12271.22 17179.708
4/8/13 73 62 51 4/8/13 -3067.805 3681.366 10430.537
4/9/13 82 67 51 4/9/13 -8589.854 613.561 10430.537
4/10/13 74 65 55 4/10/13 -3681.366 1840.683 7976.293
4/11/13 60 54 47 4/11/13 4908.488 8589.854 12884.781
4/12/13 47 44 41 4/12/13 12884.781 14725.464 16566.147
4/13/13 58 50 41 4/13/13 6135.61 11044.098 16566.147
4/14/13 57 52 46 4/14/13 6749.171 9816.976 13498.342
4/15/13 59 52 44 4/15/13 5522.049 9816.976 14725.464
4/16/13 63 55 47 4/16/13 3067.805 7976.293 12884.781
4/17/13 71 63 55 4/17/13 -1840.683 3067.805 7976.293
4/18/13 59 55 51 4/18/13 5522.049 7976.293 10430.537
4/19/13 71 63 55 4/19/13 -1840.683 3067.805 7976.293
4/20/13 60 52 43 4/20/13 4908.488 9816.976 15339.025
4/21/13 55 46 37 4/21/13 7976.293 13498.342 19020.391
4/22/13 55 48 41 4/22/13 7976.293 12271.22 16566.147
4/23/13 53 47 41 4/23/13 9203.415 12884.781 16566.147
4/24/13 69 57 44 4/24/13 -613.561 6749.171 14725.464
4/25/13 66 56 46 4/25/13 1227.122 7362.732 13498.342
4/26/13 67 59 50 4/26/13 613.561 5522.049 11044.098
4/27/13 71 60 48 4/27/13 -1840.683 4908.488 12271.22
4/28/13 69 60 51 4/28/13 -613.561 4908.488 10430.537
4/29/13 57 55 52 4/29/13 6749.171 7976.293 9816.976
4/30/13 68 60 51 4/30/13 0 4908.488 10430.537
April

33
5/1/13 69 58 47 5/1/13 -613.561 6135.61 12884.781
5/2/13 72 61 49 5/2/13 -2454.244 4294.927 11657.659
5/3/13 66 58 49 5/3/13 1227.122 6135.61 11657.659
5/4/13 69 59 48 5/4/13 -613.561 5522.049 12271.22
5/5/13 64 55 46 5/5/13 2454.244 7976.293 13498.342
5/6/13 69 58 46 5/6/13 -613.561 6135.61 13498.342
5/7/13 74 63 52 5/7/13 -3681.366 3067.805 9816.976
5/8/13 63 59 55 5/8/13 3067.805 5522.049 7976.293
5/9/13 68 61 54 5/9/13 0 4294.927 8589.854
5/10/13 79 69 59 5/10/13 -6749.171 -613.561 5522.049
5/11/13 70 66 61 5/11/13 -1227.122 1227.122 4294.927
5/12/13 70 61 51 5/12/13 -1227.122 4294.927 10430.537
5/13/13 58 52 45 5/13/13 6135.61 9816.976 14111.903
5/14/13 61 52 42 5/14/13 4294.927 9816.976 15952.586
5/15/13 69 62 54 5/15/13 -613.561 3681.366 8589.854
5/16/13 79 71 62 5/16/13 -6749.171 -1840.683 3681.366
5/17/13 72 65 58 5/17/13 -2454.244 1840.683 6135.61
5/18/13 65 61 56 5/18/13 1840.683 4294.927 7362.732
5/19/13 59 57 55 5/19/13 5522.049 6749.171 7976.293
5/20/13 79 69 58 5/20/13 -6749.171 -613.561 6135.61
5/21/13 86 77 68 5/21/13 -11044.098 -5522.049 0
5/22/13 78 69 59 5/22/13 -6135.61 -613.561 5522.049
5/23/13 80 72 64 5/23/13 -7362.732 -2454.244 2454.244
5/24/13 65 55 45 5/24/13 1840.683 7976.293 14111.903
5/25/13 54 50 45 5/25/13 8589.854 11044.098 14111.903
5/26/13 66 57 48 5/26/13 1227.122 6749.171 12271.22
5/27/13 73 62 51 5/27/13 -3067.805 3681.366 10430.537
5/28/13 68 62 56 5/28/13 0 3681.366 7362.732
5/29/13 82 70 58 5/29/13 -8589.854 -1227.122 6135.61
5/30/13 90 81 72 5/30/13 -13498.342 -7976.293 -2454.244
5/31/13 90 83 75 5/31/13 -13498.342 -9203.415 -4294.927
May
6/1/13 90 82 73 6/1/13 -13498.342 -8589.854 -3067.805
6/2/13 88 79 69 6/2/13 -12271.22 -6749.171 -613.561
6/3/13 78 72 66 6/3/13 -6135.61 -2454.244 1227.122
6/4/13 75 66 57 6/4/13 -4294.927 1227.122 6749.171
6/5/13 74 66 58 6/5/13 -3681.366 1227.122 6135.61
6/6/13 70 65 59 6/6/13 -1227.122 1840.683 5522.049
6/7/13 63 61 59 6/7/13 3067.805 4294.927 5522.049
6/8/13 77 67 57 6/8/13 -5522.049 613.561 6749.171
6/9/13 80 72 63 6/9/13 -7362.732 -2454.244 3067.805
6/10/13 70 66 62 6/10/13 -1227.122 1227.122 3681.366
6/11/13 80 72 64 6/11/13 -7362.732 -2454.244 2454.244
6/12/13 76 71 65 6/12/13 -4908.488 -1840.683 1840.683
6/13/13 69 62 55 6/13/13 -613.561 3681.366 7976.293
6/14/13 72 63 53 6/14/13 -2454.244 3067.805 9203.415
6/15/13 80 71 61 6/15/13 -7362.732 -1840.683 4294.927
6/16/13 80 73 65 6/16/13 -7362.732 -3067.805 1840.683
6/17/13 84 77 69 6/17/13 -9816.976 -5522.049 -613.561
6/18/13 84 74 64 6/18/13 -9816.976 -3681.366 2454.244
6/19/13 77 68 59 6/19/13 -5522.049 0 5522.049
6/20/13 80 71 62 6/20/13 -7362.732 -1840.683 3681.366
6/21/13 82 73 64 6/21/13 -8589.854 -3067.805 2454.244
6/22/13 84 75 65 6/22/13 -9816.976 -4294.927 1840.683
6/23/13 88 79 70 6/23/13 -12271.22 -6749.171 -1227.122
6/24/13 92 83 74 6/24/13 -14725.464 -9203.415 -3681.366
6/25/13 91 82 73 6/25/13 -14111.903 -8589.854 -3067.805
6/26/13 85 80 74 6/26/13 -10430.537 -7362.732 -3681.366
6/27/13 86 80 73 6/27/13 -11044.098 -7362.732 -3067.805
6/28/13 85 79 73 6/28/13 -10430.537 -6749.171 -3067.805
6/29/13 83 77 71 6/29/13 -9203.415 -5522.049 -1840.683
6/30/13 86 80 73 6/30/13 -11044.098 -7362.732 -3067.805
June

34
7/1/13 77 75 72 7/1/13 -5522.049 -4294.927 -2454.244
7/2/13 82 77 72 7/2/13 -8589.854 -5522.049 -2454.244
7/3/13 83 78 73 7/3/13 -9203.415 -6135.61 -3067.805
7/4/13 87 81 75 7/4/13 -11657.659 -7976.293 -4294.927
7/5/13 90 83 76 7/5/13 -13498.342 -9203.415 -4908.488
7/6/13 92 85 78 7/6/13 -14725.464 -10430.537 -6135.61
7/7/13 92 85 78 7/7/13 -14725.464 -10430.537 -6135.61
7/8/13 89 81 73 7/8/13 -12884.781 -7976.293 -3067.805
7/9/13 88 81 74 7/9/13 -12271.22 -7976.293 -3681.366
7/10/13 85 80 75 7/10/13 -10430.537 -7362.732 -4294.927
7/11/13 84 80 76 7/11/13 -9816.976 -7362.732 -4908.488
7/12/13 77 73 68 7/12/13 -5522.049 -3067.805 0
7/13/13 81 74 67 7/13/13 -7976.293 -3681.366 613.561
7/14/13 90 82 74 7/14/13 -13498.342 -8589.854 -3681.366
7/15/13 94 86 78 7/15/13 -15952.586 -11044.098 -6135.61
7/16/13 94 86 77 7/16/13 -15952.586 -11044.098 -5522.049
7/17/13 97 88 79 7/17/13 -17793.269 -12271.22 -6749.171
7/18/13 98 90 81 7/18/13 -18406.83 -13498.342 -7976.293
7/19/13 96 90 83 7/19/13 -17179.708 -13498.342 -9203.415
7/20/13 93 87 81 7/20/13 -15339.025 -11657.659 -7976.293
7/21/13 89 83 76 7/21/13 -12884.781 -9203.415 -4908.488
7/22/13 86 81 75 7/22/13 -11044.098 -7976.293 -4294.927
7/23/13 87 80 73 7/23/13 -11657.659 -7362.732 -3067.805
7/24/13 83 76 68 7/24/13 -9203.415 -4908.488 0
7/25/13 68 66 64 7/25/13 0 1227.122 2454.244
7/26/13 83 74 65 7/26/13 -9203.415 -3681.366 1840.683
7/27/13 82 76 70 7/27/13 -8589.854 -4908.488 -1227.122
7/28/13 78 74 70 7/28/13 -6135.61 -3681.366 -1227.122
7/29/13 85 77 69 7/29/13 -10430.537 -5522.049 -613.561
7/30/13 83 75 67 7/30/13 -9203.415 -4294.927 613.561
7/31/13 83 75 67 7/31/13 -9203.415 -4294.927 613.561
July
8/1/13 76 71 66 8/1/13 -4908.488 -1840.683 1227.122
8/2/13 83 75 67 8/2/13 -9203.415 -4294.927 613.561
8/3/13 78 73 68 8/3/13 -6135.61 -3067.805 0
8/4/13 80 73 66 8/4/13 -7362.732 -3067.805 1227.122
8/5/13 78 70 62 8/5/13 -6135.61 -1227.122 3681.366
8/6/13 82 73 64 8/6/13 -8589.854 -3067.805 2454.244
8/7/13 80 75 70 8/7/13 -7362.732 -4294.927 -1227.122
8/8/13 81 76 70 8/8/13 -7976.293 -4908.488 -1227.122
8/9/13 85 80 74 8/9/13 -10430.537 -7362.732 -3681.366
8/10/13 83 77 70 8/10/13 -9203.415 -5522.049 -1227.122
8/11/13 81 73 65 8/11/13 -7976.293 -3067.805 1840.683
8/12/13 82 76 70 8/12/13 -8589.854 -4908.488 -1227.122
8/13/13 77 73 68 8/13/13 -5522.049 -3067.805 0
8/14/13 74 68 61 8/14/13 -3681.366 0 4294.927
8/15/13 78 69 59 8/15/13 -6135.61 -613.561 5522.049
8/16/13 82 73 64 8/16/13 -8589.854 -3067.805 2454.244
8/17/13 84 74 64 8/17/13 -9816.976 -3681.366 2454.244
8/18/13 76 72 68 8/18/13 -4908.488 -2454.244 0
8/19/13 79 73 66 8/19/13 -6749.171 -3067.805 1227.122
8/20/13 88 78 68 8/20/13 -12271.22 -6135.61 0
8/21/13 90 81 72 8/21/13 -13498.342 -7976.293 -2454.244
8/22/13 78 75 71 8/22/13 -6135.61 -4294.927 -1840.683
8/23/13 82 77 71 8/23/13 -8589.854 -5522.049 -1840.683
8/24/13 80 73 65 8/24/13 -7362.732 -3067.805 1840.683
8/25/13 83 74 64 8/25/13 -9203.415 -3681.366 2454.244
8/26/13 84 76 68 8/26/13 -9816.976 -4908.488 0
8/27/13 87 79 71 8/27/13 -11657.659 -6749.171 -1840.683
8/28/13 86 79 71 8/28/13 -11044.098 -6749.171 -1840.683
8/29/13 80 76 71 8/29/13 -7362.732 -4908.488 -1840.683
8/30/13 85 78 70 8/30/13 -10430.537 -6135.61 -1227.122
8/31/13 86 80 73 8/31/13 -11044.098 -7362.732 -3067.805
August

35
9/1/13 84 80 75 9/1/13 -9816.976 -7362.732 -4294.927
9/2/13 82 78 74 9/2/13 -8589.854 -6135.61 -3681.366
9/3/13 82 75 68 9/3/13 -8589.854 -4294.927 0
9/4/13 82 74 65 9/4/13 -8589.854 -3681.366 1840.683
9/5/13 80 72 64 9/5/13 -7362.732 -2454.244 2454.244
9/6/13 72 65 57 9/6/13 -2454.244 1840.683 6749.171
9/7/13 80 70 59 9/7/13 -7362.732 -1227.122 5522.049
9/8/13 83 74 64 9/8/13 -9203.415 -3681.366 2454.244
9/9/13 73 65 57 9/9/13 -3067.805 1840.683 6749.171
9/10/13 87 78 68 9/10/13 -11657.659 -6135.61 0
9/11/13 96 87 77 9/11/13 -17179.708 -11657.659 -5522.049
9/12/13 87 79 70 9/12/13 -11657.659 -6749.171 -1227.122
9/13/13 77 68 59 9/13/13 -5522.049 0 5522.049
9/14/13 67 61 54 9/14/13 613.561 4294.927 8589.854
9/15/13 73 62 51 9/15/13 -3067.805 3681.366 10430.537
9/16/13 73 65 56 9/16/13 -3067.805 1840.683 7362.732
9/17/13 65 58 50 9/17/13 1840.683 6135.61 11044.098
9/18/13 72 62 51 9/18/13 -2454.244 3681.366 10430.537
9/19/13 78 67 55 9/19/13 -6135.61 613.561 7976.293
9/20/13 79 70 60 9/20/13 -6749.171 -1227.122 4908.488
9/21/13 77 69 61 9/21/13 -5522.049 -613.561 4294.927
9/22/13 69 62 54 9/22/13 -613.561 3681.366 8589.854
9/23/13 66 58 50 9/23/13 1227.122 6135.61 11044.098
9/24/13 73 60 47 9/24/13 -3067.805 4908.488 12884.781
9/25/13 73 63 52 9/25/13 -3067.805 3067.805 9816.976
9/26/13 71 65 58 9/26/13 -1840.683 1840.683 6135.61
9/27/13 69 63 57 9/27/13 -613.561 3067.805 6749.171
9/28/13 73 65 56 9/28/13 -3067.805 1840.683 7362.732
9/29/13 72 65 57 9/29/13 -2454.244 1840.683 6749.171
9/30/13 75 66 56 9/30/13 -4294.927 1227.122 7362.732
September
10/1/13 82 71 59 10/1/13 -8589.854 -1840.683 5522.049
10/2/13 83 74 64 10/2/13 -9203.415 -3681.366 2454.244
10/3/13 78 71 63 10/3/13 -6135.61 -1840.683 3067.805
10/4/13 86 76 66 10/4/13 -11044.098 -4908.488 1227.122
10/5/13 76 70 64 10/5/13 -4908.488 -1227.122 2454.244
10/6/13 70 68 65 10/6/13 -1227.122 0 1840.683
10/7/13 76 68 60 10/7/13 -4908.488 0 4908.488
10/8/13 67 61 54 10/8/13 613.561 4294.927 8589.854
10/9/13 62 58 53 10/9/13 3681.366 6135.61 9203.415
10/10/13 65 60 54 10/10/13 1840.683 4908.488 8589.854
10/11/13 68 64 60 10/11/13 0 2454.244 4908.488
10/12/13 72 66 60 10/12/13 -2454.244 1227.122 4908.488
10/13/13 65 61 56 10/13/13 1840.683 4294.927 7362.732
10/14/13 66 59 52 10/14/13 1227.122 5522.049 9816.976
10/15/13 72 63 53 10/15/13 -2454.244 3067.805 9203.415
10/16/13 67 62 56 10/16/13 613.561 3681.366 7362.732
10/17/13 73 67 61 10/17/13 -3067.805 613.561 4294.927
10/18/13 68 62 55 10/18/13 0 3681.366 7976.293
10/19/13 64 58 52 10/19/13 2454.244 6135.61 9816.976
10/20/13 63 57 50 10/20/13 3067.805 6749.171 11044.098
10/21/13 66 58 50 10/21/13 1227.122 6135.61 11044.098
10/22/13 67 59 51 10/22/13 613.561 5522.049 10430.537
10/23/13 55 50 45 10/23/13 7976.293 11044.098 14111.903
10/24/13 54 48 41 10/24/13 8589.854 12271.22 16566.147
10/25/13 53 47 40 10/25/13 9203.415 12884.781 17179.708
10/26/13 55 48 41 10/26/13 7976.293 12271.22 16566.147
10/27/13 58 52 46 10/27/13 6135.61 9816.976 13498.342
10/28/13 61 52 43 10/28/13 4294.927 9816.976 15339.025
10/29/13 56 50 44 10/29/13 7362.732 11044.098 14725.464
10/30/13 60 54 47 10/30/13 4908.488 8589.854 12884.781
10/31/13 66 60 53 10/31/13 1227.122 4908.488 9203.415
October

36
11/1/13 70 65 59 11/1/13 -1227.122 1840.683 5522.049
11/2/13 68 62 55 11/2/13 0 3681.366 7976.293
11/3/13 55 46 37 11/3/13 7976.293 13498.342 19020.391
11/4/13 46 41 35 11/4/13 13498.342 16566.147 20247.513
11/5/13 55 48 41 11/5/13 7976.293 12271.22 16566.147
11/6/13 61 55 49 11/6/13 4294.927 7976.293 11657.659
11/7/13 64 54 44 11/7/13 2454.244 8589.854 14725.464
11/8/13 50 45 40 11/8/13 11044.098 14111.903 17179.708
11/9/13 50 44 38 11/9/13 11044.098 14725.464 18406.83
11/10/13 61 53 44 11/10/13 4294.927 9203.415 14725.464
11/11/13 53 48 43 11/11/13 9203.415 12271.22 15339.025
11/12/13 52 42 31 11/12/13 9816.976 15952.586 22701.757
11/13/13 39 34 29 11/13/13 17793.269 20861.074 23928.879
11/14/13 52 43 33 11/14/13 9816.976 15339.025 21474.635
11/15/13 57 51 44 11/15/13 6749.171 10430.537 14725.464
11/16/13 60 53 45 11/16/13 4908.488 9203.415 14111.903
11/17/13 60 56 51 11/17/13 4908.488 7362.732 10430.537
11/18/13 65 58 51 11/18/13 1840.683 6135.61 10430.537
11/19/13 51 44 36 11/19/13 10430.537 14725.464 19633.952
11/20/13 44 38 32 11/20/13 14725.464 18406.83 22088.196
11/21/13 52 44 35 11/21/13 9816.976 14725.464 20247.513
11/22/13 57 54 51 11/22/13 6749.171 8589.854 10430.537
11/23/13 54 43 31 11/23/13 8589.854 15339.025 22701.757
11/24/13 30 27 23 11/24/13 23315.318 25156.001 27610.245
11/25/13 35 29 23 11/25/13 20247.513 23928.879 27610.245
11/26/13 47 40 33 11/26/13 12884.781 17179.708 21474.635
11/27/13 62 49 35 11/27/13 3681.366 11657.659 20247.513
11/28/13 35 33 30 11/28/13 20247.513 21474.635 23315.318
11/29/13 39 34 29 11/29/13 17793.269 20861.074 23928.879
11/30/13 39 32 25 11/30/13 17793.269 22088.196 26383.123
November
12/1/13 49 43 36 12/1/13 11657.659 15339.025 19633.952
12/2/13 49 45 41 12/2/13 11657.659 14111.903 16566.147
12/3/13 53 46 38 12/3/13 9203.415 13498.342 18406.83
12/4/13 52 47 41 12/4/13 9816.976 12884.781 16566.147
12/5/13 60 54 48 12/5/13 4908.488 8589.854 12271.22
12/6/13 62 50 37 12/6/13 3681.366 11044.098 19020.391
12/7/13 41 37 32 12/7/13 16566.147 19020.391 22088.196
12/8/13 33 31 29 12/8/13 21474.635 22701.757 23928.879
12/9/13 39 35 31 12/9/13 17793.269 20247.513 22701.757
12/10/13 37 34 30 12/10/13 19020.391 20861.074 23315.318
12/11/13 33 30 27 12/11/13 21474.635 23315.318 25156.001
12/12/13 30 27 23 12/12/13 23315.318 25156.001 27610.245
12/13/13 35 29 23 12/13/13 20247.513 23928.879 27610.245
12/14/13 34 28 22 12/14/13 20861.074 24542.44 28223.806
12/15/13 40 35 30 12/15/13 17179.708 20247.513 23315.318
12/16/13 33 29 25 12/16/13 21474.635 23928.879 26383.123
12/17/13 32 28 24 12/17/13 22088.196 24542.44 26996.684
12/18/13 37 30 23 12/18/13 19020.391 23315.318 27610.245
12/19/13 47 39 30 12/19/13 12884.781 17793.269 23315.318
12/20/13 53 47 41 12/20/13 9203.415 12884.781 16566.147
12/21/13 65 58 51 12/21/13 1840.683 6135.61 10430.537
12/22/13 71 66 61 12/22/13 -1840.683 1227.122 4294.927
12/23/13 64 53 42 12/23/13 2454.244 9203.415 15952.586
12/24/13 42 34 26 12/24/13 15952.586 20861.074 25769.562
12/25/13 31 25 19 12/25/13 22701.757 26383.123 30064.489
12/26/13 36 33 30 12/26/13 19633.952 21474.635 23315.318
12/27/13 40 36 31 12/27/13 17179.708 19633.952 22701.757
12/28/13 55 46 36 12/28/13 7976.293 13498.342 19633.952
12/29/13 48 45 41 12/29/13 12271.22 14111.903 16566.147
12/30/13 45 34 23 12/30/13 14111.903 20861.074 27610.245
12/31/13 32 27 21 12/31/13 22088.196 25156.001 28837.367
December

37
Day
Time Temperature(°F) Time Overall Load Requirement (BTU/hr)
12:51 68 12:51 0
1:51 67 1:51 674.9171
2:51 67 2:51 674.9171
3:51 65 3:51 1902.0391
4:51 63 4:51 3067.805
5:51 62 5:51 3620.0099
6:51 61 6:51 4294.927
7:51 61 7:51 4294.927
8:51 63 8:51 3067.805
9:51 65 9:51 1902.0391
10:51 67 10:51 674.9171
11:51 70 11:51 -1227.122
12:51 71 12:51 -1902.0391
1:51 72 1:51 -2454.244
2:51 72 2:51 -2454.244
3:51 73 3:51 -3067.805
4:51 73 4:51 -3067.805
5:51 73 5:51 -3067.805
6:51 72 6:51 -2454.244
7:51 70 7:51 -1227.122
8:51 69 8:51 -674.9171
9:51 68 9:51 0
10:51 67 10:51 674.9171
11:51 66 11:51 1227.122

38
Natural Gas Furnace Specifications

47
References
[1] McDonald, Andre, and Hugh Magande. Introduction to Thermo-Fluids Systems
Design. 1., Auflage ed. New York, NY: John Wiley & Sons, 2012.
[2] Vedavarz, Ali, and Sunil Kumar. HVAC Handbook of Heating, Ventilation and Air
Conditioning for Design and Implementation. New York: Industrial Press, 2007.
[3] "Weather History for Central Park, NY." Weather History for Central Park, NY.
Accessed December 15, 2014.
http://www.wunderground.com/history/airport/KNYC/2013/8/14/DailyHistory.h
tml?req_city=NA&req_state=NA&req_statename=NA&MR=1.
[4] "Air Heating Systems." Air Heating Systems. Accessed December 15, 2014.
http://www.engineeringtoolbox.com/air-heating-systems-d_1136.html.
[5] "Thermal Conductivity of Some Common Materials and Gases." Thermal
Conductivity of Some Common Materials and Gases. Accessed December 15, 2014.
http://www.engineeringtoolbox.com/thermal-conductivity-d_429.html.
[6] "From The Miron Blog." New York City Real Estate Blog. Accessed December 15,
2014. http://www.mironproperties.com/blog/a-short-history-of-the-nyc-
brownstone.
[7] "Rheem." Classic Series: 80% AFUE R801P Upflow/Horizontal Series. Accessed
December 18, 2014. http://www.rheem.com/product/gas-furnaces-classic-series-
80-afue-r801p-upflow-horizontal.

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