HOT TOPIC
TON OF REFRIGERATION,
WORK, U FACTOR, LRA (Locked rotor amps)
RPM of motor, HEAT FORMULA, GAS PIPING (Sizing – CF/hr.), CALCULATING OIL NOZZLE SIZE (GPH):
PYTHAGOREAN THEOREM, Linear Measurement Equivalents (U.S. Conventional - SI Metric)
its easy to size the chilled water pipe in app or riser in two step only just cal. the water gpm and plotted in red area ., now read the minimum pipe size and select the min. water velocity
its easy to size the chilled water pipe in app or riser in two step only just cal. the water gpm and plotted in red area ., now read the minimum pipe size and select the min. water velocity
ABSTRACT
Heat/light/electrical energy is out today’s necessity and has scarcity also. Energy conservation is key requirement of any industry at all times.
In general, industries use heat energy for conservation of raw material to finished product. The source of heat energy is generally saturated or super heated steam. The steam generation is common use one boiler with carity of fuels. Whatever may be the fuel the generation should be as economy as possible which adds to the product cost. Further the usage of steam and recycling steam condensate back to boiler is an art depending on plant layouts.
In this project the steam generator is water tube boiler fired with rice husk. The steam is transferred to the tyre/tube moulds where tyres/tubes are cured while the heat is rejected to the tyres the condensate forms and this condensate is put back to the boiler. While doing so the steam is also stopped back to boiler without rejecting complete heat to the product. This gets flashed into atmosphere at feed water tank. The science of separation of condensate from steam saves energy. Better the separation more the fuel conservation.
In the steam generator the fuel is burnt to heat the water and form steam. This fuel burnt flue gas carries lot of energy, out through chimney. Prior to exhausting through the heat left in flue need to be recovered, through heat recovery mechanisms’. In this project an air-preheater condensate heat recovery unit is the major energy consuming station.
Excel sheet Download Link: https://www.scribd.com/document/385945712/PSV-Sizing-Tool-API-Based-Calc-Sheets
PSV Sizing for Blocked Liquid Discharge Condition
PSV Sizing for Blocked Gas Discharge Condition
PSV Sizing for Fire Case of Liquid Filled Vessel
PSV Sizing for Control Valve Fail Open Case
Relief Valve Sizing for Thermal Expansion
Restriction Orifice Sizing for Gas Flow
Restriction Orifice Sizing for Liquid Flow
Single Phase Flow Line Sizing Tool
Gas Control Valve Sizing Tool
Heat/light/electrical energy is out today’s necessity and has scarcity also. Energy conservation is key requirement of any industry at all times.
In general, industries use heat energy for conservation of raw material to finished product. The source of heat energy is generally saturated or super heated steam. The steam generation is common use one boiler with carity of fuels. Whatever may be the fuel the generation should be as economy as possible which adds to the product cost. Further the usage of steam and recycling steam condensate back to boiler is an art depending on plant layouts.
In this project the steam generator is water tube boiler fired with rice husk. The steam is transferred to the tyre/tube moulds where tyres/tubes are cured while the heat is rejected to the tyres the condensate forms and this condensate is put back to the boiler. While doing so the steam is also stopped back to boiler without rejecting complete heat to the product. This gets flashed into atmosphere at feed water tank. The science of separation of condensate from steam saves energy. Better the separation more the fuel conservation.
In the steam generator the fuel is burnt to heat the water and form steam. This fuel burnt flue gas carries lot of energy, out through chimney. Prior to exhausting through the heat left in flue need to be recovered, through heat recovery mechanisms’. In this project an air-preheater condensate heat recovery unit is the major energy consuming station.
ABSTRACT
Heat/light/electrical energy is out today’s necessity and has scarcity also. Energy conservation is key requirement of any industry at all times.
In general, industries use heat energy for conservation of raw material to finished product. The source of heat energy is generally saturated or super heated steam. The steam generation is common use one boiler with carity of fuels. Whatever may be the fuel the generation should be as economy as possible which adds to the product cost. Further the usage of steam and recycling steam condensate back to boiler is an art depending on plant layouts.
In this project the steam generator is water tube boiler fired with rice husk. The steam is transferred to the tyre/tube moulds where tyres/tubes are cured while the heat is rejected to the tyres the condensate forms and this condensate is put back to the boiler. While doing so the steam is also stopped back to boiler without rejecting complete heat to the product. This gets flashed into atmosphere at feed water tank. The science of separation of condensate from steam saves energy. Better the separation more the fuel conservation.
In the steam generator the fuel is burnt to heat the water and form steam. This fuel burnt flue gas carries lot of energy, out through chimney. Prior to exhausting through the heat left in flue need to be recovered, through heat recovery mechanisms’. In this project an air-preheater condensate heat recovery unit is the major energy consuming station.
Excel sheet Download Link: https://www.scribd.com/document/385945712/PSV-Sizing-Tool-API-Based-Calc-Sheets
PSV Sizing for Blocked Liquid Discharge Condition
PSV Sizing for Blocked Gas Discharge Condition
PSV Sizing for Fire Case of Liquid Filled Vessel
PSV Sizing for Control Valve Fail Open Case
Relief Valve Sizing for Thermal Expansion
Restriction Orifice Sizing for Gas Flow
Restriction Orifice Sizing for Liquid Flow
Single Phase Flow Line Sizing Tool
Gas Control Valve Sizing Tool
Heat/light/electrical energy is out today’s necessity and has scarcity also. Energy conservation is key requirement of any industry at all times.
In general, industries use heat energy for conservation of raw material to finished product. The source of heat energy is generally saturated or super heated steam. The steam generation is common use one boiler with carity of fuels. Whatever may be the fuel the generation should be as economy as possible which adds to the product cost. Further the usage of steam and recycling steam condensate back to boiler is an art depending on plant layouts.
In this project the steam generator is water tube boiler fired with rice husk. The steam is transferred to the tyre/tube moulds where tyres/tubes are cured while the heat is rejected to the tyres the condensate forms and this condensate is put back to the boiler. While doing so the steam is also stopped back to boiler without rejecting complete heat to the product. This gets flashed into atmosphere at feed water tank. The science of separation of condensate from steam saves energy. Better the separation more the fuel conservation.
In the steam generator the fuel is burnt to heat the water and form steam. This fuel burnt flue gas carries lot of energy, out through chimney. Prior to exhausting through the heat left in flue need to be recovered, through heat recovery mechanisms’. In this project an air-preheater condensate heat recovery unit is the major energy consuming station.
Aa ppt from enrun company located in Hyderabad Telangana India a company that specialises in switch boards and insulation basically from a to z in heating ventilation and air conditioning
carnot cycle (a theoretical thermodynamic cycle).pptHafizMudaserAhmad
The Carnot cycle, a theoretical thermodynamic cycle, serves as a fundamental concept in the study of heat engines. Named after the French physicist Sadi Carnot, this cycle provides insight into the maximum efficiency achievable by any heat engine operating between two temperature reservoirs. It consists of four reversible processes: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression. During the isothermal expansion process, the working substance (often a gas) absorbs heat from a high-temperature reservoir, expanding and doing work on the surroundings. The adiabatic expansion follows, during which the gas continues to expand without heat exchange, resulting in a decrease in temperature and pressure. Subsequently, the isothermal compression occurs as the gas is brought into contact with a low-temperature reservoir, releasing heat and contracting. Finally, the adiabatic compression completes the cycle as the gas is compressed without heat exchange, leading to an increase in temperature and pressure. The efficiency of the Carnot cycle depends solely on the temperatures of the reservoirs, with the maximum efficiency achievable when operating between two reversible isothermal processes. Despite being an idealized model, the Carnot cycle provides valuable insights into the principles of thermodynamics and serves as a benchmark for real-world heat engines.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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AKS UNIVERSITY Satna Final Year Project By OM Hardaha.pdf
Hvac formulas
1. HVAC FORMULAS
CFM = ______BTU/Hr / ( 1.08 x Temperature Difference)
TON OF REFRIGERATION -
The amount of heat required to melt a ton (2000 lbs.) of ice at 32°F
288,000 BTU/24 hr.
12,000 BTU/hr.
APPROXIMATELY 2 inches in Hg. (mercury) = 1 psi
WORK =
Force (energy exerted) X Distance
Example: A 150 lb. man climbs a flight of stairs 100 ft. high
Work = 150 lb. X 100 ft.
Work = 15,000 ft.-lb.
ONE HORSEPOWER =
33,000 ft.-lb. of work in 1 minute
ONE HORSEPOWER =
2. 746 Watts
CONVERTING KW to BTU:
1 KW = 3413 BTU’s
Example: A 20 KW heater (20 KW X 3413 BTU/KW = 68,260 BTU’s)
CONVERTING BTU to KW
3413 BTU’s = 1 KW
Example: A 100,000 BTU/hr. oil or gas furnace
(100,000 / 3413 = 29.3 KW)
COULOMB =
6.24 X 1018 (1 Coulomb = 1 Amp)
OHM'S LAW =
E = I x R
I = E / R
R = E / I
Where:
E = voltage (emf)
I = Amperage (current)
3. R = Resistance (load)
WATTS (POWER) =
volts x amps or P = E x I
P(in KW) = (E x I) / 1000
U FACTOR =
Reciprocal of R factor
1 / R = U
Example:
If R = 19:
U = 1 / 19 = .05 (BTU’s transferred / 1 Sq.Ft. / 1ºF / 1 Hour)
VA
(how the secondary of a transformer is rated) = volts X amps
Example: 24V x .41A = 10 VA
4. ONE FARAD CAPACITY =
1 amp. stored under 1 volt of pressure
MFD (microfarad) =
1 MFD = 1 Farad / 1,000,000
LRA (Locked rotor amps) =
LRA = FLA x 5 (NOTE: This is a commonly used rule-of-thumb, not a direct conversion)
TEV (shown in equilibrium)
46.7# (Bulb Pressure) = 9.7# (Spring Pressure) + 37# (Evaporator Pressure)
Where:
Bulb Pressure = opening force
Spring and Evaporator Pressures = closing forces
RPM of motor = (60Hz x 120) / (No. of Poles)
1800 RPM Motor – slippage makes it about 1750
3600 RPM Motor – slippage makes it about 3450
5. DRY AIR =
78.0% Nitrogen
21.0% Oxygen
1.0% Other Gases
WET AIR =
Same as dry air plus water vapor
SPECIFIC DENSITY = 1 / Specific Volume
SPECIFIC DENSITY OF AIR = 1 / 13.33 = .075 lbs./cu.ft.
STANDARD AIR =
24 Specific Heat (BTU’s needed to raise 1 lb. 1 degree)
SENSIBLE HEAT FORMULA (Furnaces):
BTU/hr. – Specific Heat X Specific Density X 60 min./hr. =
X CFM X DT
.24 X .075 X 60 X CFM X DT = 1.08 X CFM X DT
6. ENTHALPHY = h =
Sensible heat + Latent heat
TOTAL HEAT FORMULA
(for cooling, humidifying or dehumidifying)
BTU/hr. = Specific Density X 60 min./hr. X CFM X Dh
= 0.75 x 60 x CFM x Dh
= 4.5 x CFM x Dh
Where Dh = Change in Enthalpy
RELATIVE HUMIDITY =
Moisture present / Moisture air can hold
SPECIFIC HUMIDITY =
Grains of moisture per dry air
7000 GRAINS in 1 lb. of water
7. DEW POINT =
When wet bulb equals dry bulb
TOTAL PRESSURE (Ductwork) =
Static Pressure + Velocity Pressure
CFM =
Area (sq. ft.) X Velocity (ft. min.)
HOW TO CALCULATE AREA
Rectangular Duct
A = L x W
Round Duct
A = (Pi)r² ...or...(Pi)D²/4
RETURN AIR GRILLES –
Net free area = about 75%
3 PHASE VOLTAGE UNBALANCE =
(100 x maximum deg. from average volts) / Average Volts
8. NET OIL PRESSURE =
Gross Oil Pressure – Suction Pressure
NOTE: The suction pressure must be measured at the crankcase, not the service valve
COMPRESSION RATIO =
Discharge Pressure Absolute / Suction Pressure Absolute
HEAT PUMP AUXILIARY HEAT –
Sized at 100% of load
ARI HEAT PUMP RATING POINTS =
47°F and 17°F
NON-BLEND REFRIGERANTS:
Constant Pressure = Constant Temperature during
Saturated Condition in an evaporator or condenser
BLENDS –
9. Changing Temperature during Saturated Condition in an evaporator or condenser (See Glide)
28 INCHES OF WC =
1 psi
NATURAL GAS COMBUSTION:
Excess Air = 50%
15 ft.3 of air to burn 1 ft.3 of methane produces:
16 ft.3 of flue gases:
1 ft.3 of oxygen
12 ft.3 of nitrogen
1 ft.3 of carbon dioxide
2 ft.3 of water vapor
Another 15 ft.3 of air is added at the draft hood
GAS PIPING (Sizing – CF/hr.) =
Input BTU’s
Heating Value
Example:
80,000 Input BTU’s
1000 (Heating Value per CF of Natural Gas)
= 80 CF/hr.
10. Example:
80,000 Input BTU’s
2550 (Heating Value per CF of Propane)
= 31 CF/hr.
FLAMMABILITY LIMITS
Propane Butane Natural Gas
2.4-9.5 1.9-8.5 4-14
COMBUSTION AIR NEEDED
(PC=Perfect Combustion)
(RC=Real Combustion)
Propane
23.5 ft.3 (PC)
36 ft.3 (RC)
Natural Gas
10 ft.3 (PC)
15 ft.3 (RC)
11. ULTIMATE CO2 13.7% 11.8%
CALCULATING OIL NOZZLE SIZE (GPH):
BTU Input = Nozzle Size (GPH)
140,000 BTU’s
OR
BTU Output
140,000 X Efficiency of Furnace
FURNACE EFFICIENCY:
% Efficiency = energy output / energy input
OIL BURNER STACK TEMPERATURE (Net) =
Highest Stack
Temperature minus
Room Temperature
Example: 520° Stack Temp. – 70° Room Temp. = Net Stack
Temperature of 450°
KELVIN TO CELSIUS:
C = K – 273
12. CELSIUS TO KELVIN:
K = C + 273
ABSOLUTE TEMPERATURE MEASURED IN KELVINS
SINE = side opposite
COSINE = side adjacent
Sin = hypotenuse
Cos = hypotenuse
TANGENT =
side opposite / side adjacent
PERIMETER OF SQUARE:
P = 4s
Where: P = Perimeter and s = side
PERIMETER OF RECTANGLE:
P = 2l + 2w P – Perimeter
l = length
13. w = width
PERIMETER OF SQUARE
P = a + b + c + d (P = Perimeter)
a = 1st side
b = 2nd side
c = 3rd side
d= 4th
side
PERIMETER OF CIRCLE:
C = (Pi)D = 2(Pi)r
Where:
C = Circumference
(Pi) = 3.1416
D = Diameter
r = radius
AREA OF SQUARE:
a = s² = s x s
A = Area
s = side
14. AREA OF RECTANGLE:
A = l x w
Where:
A = Area
l = length
w = width
AREA OF TRIANGLE:
A = 1/2bh
Where:
A = Area
b = base
h = height
AREA OF CIRCLE:
A = (Pi)r² = (Pi) D²/4
Where:
A = Area
(Pi) = 3.1416
r = radius
D = Diameter
15. VOLUME OF RECTANGULAR SOLID:
V = l x w x h
Where:
V = Volume
l = length
w = width
h = height
VOLUME OF CYLINDRICAL SOLID:
V = (Pi)r²h = (Pi) D²/4 x h
Where:
V = Volume
p = 3.1416
r = Radius
D = Diameter
h = height
CAPACITANCE IN SERIES:
C = 1 / (C1 + C2)
16. CAPACITANCE IN PARALLEL:
C = C1 + C2 + . . . . .
GAS LAWS:
Boyle’s Law: P1 V1 = P2 V2
Where:
P = Pressure (absolute)
V = Volume
Charles’ Law:
P1 / T1 = P2 / T2
Where:
P = Pressure (absolute)
T = Temperature (absolute)
General Gas Law:
(P1 x V1) / T1 = (P2 x V2) / T2
Where:
P = Pressure (absolute)
V = Volume
17. T = Temperature (absolute)
PYTHAGOREAN THEOREM:
c2 = a2 + b2
Where:
c = hypotenuse
a & b = sides
Capacity of Schedule 80 steel pipe in foot per length in US gallons:
1” = .0374
1-1/4” = .0666
1-1/2” = .0918
2” = .1535
2-1/2” = .22
3” = .344
4” = .5970
5” = .947
Example 2-1/2" pipe = .22 x 10 feet = 2.2 gallons capacity
Infrared Thermometer Adjustment Values:
Material/Emissivity
Aluminum
Bright/0.09
21. 1 yard =
3'
0.914 m
91.44 cm
1 micron =
0.0000394"
1 millimeter =
1000 µm
0.0394"
1 centimeter =
10 mm
0.3937"
1 meter =
100 cm
39.37"
1 kilometer =
1000m
0.62137 miles
Area Equivalents ( U.S. to Metric )