This document contains calculations and information for sizing HVAC systems and components. It includes psychrometric calculations to determine cooling and heating loads based on outdoor conditions, building envelope properties, internal gains, and desired indoor conditions. Spreadsheets provide templates for calculating duct sizing, pressure loss, fan sizing, and air leakage testing. Preliminary pipe sizing and module temperature calculations are also referenced. The document contains information on HVAC system design and sizing.

1. Psychrometric Calcs
Press Fan Laws, Changes to Fan Duty Press Conversions
Press Sizing Pressure Relief Outlets, Door Air Loss Press Natural Ventilation by Temp Diff.
Press Duct Weight & Flange Drilling Press Load Estimate Sheet
Press Pressure Loss Spreadsheet Press Date Plan Set Up
Press Sound Attenuation Spreadsheet Press U Values
Press Preliminary Pipe Sizing Press Hygrometric Sheet
Press Air Leakage Test Sheet Press Process
Press Module Temperature Press Noise Addition
HVAC CALC.
WARNING: This spreadsheet contains rules of thumb and should be used for estimating only
Press Ventilation Rate, Sizing of Heating & Cooling Loads Press Psychrometric Chart
Press Duct Sizing & Estimation of System Pressure Loss Press

2. <<<Back
ENTER ANSWER
Module Width
Module Length Module
Height Required
ventilation Fan
resistance ~ Est.
Required
pressurisation
4.00 m m3
/s
m deg
C
m kW
0.055 supply airflow pick up from fan typ.
Fan power
11.00 0.49
3.00 0.04
1.5 ac / h Pa
600
0 Pa m3
/s 0.06 Extract airflow
Winter ambient min
Summer ambient max
Internal design Lo
Internal design Hi
-3 deg C kW
deg C kW
0.87 heat loss infiltration heat gain
infiltration
35 0.50
10 deg C deg C
28
U-Value
Equipment gains
Other Gains
5 W/m2
deg C kW
kW kW
kW kW
8.58 winter fabric loss summer fabric
gain Winter Heating Load Summer
Cooling Load
10 1.73
5 9.45
kW 17.23
Branch / Duct volume
Duct velocity
0.1195 m3
/s
4 m/s mm x mm 173 Square Duct

3. <<<Back
ENTER ANSWER
Air Volume 25.00 m3
/s Square mm 1768 x
or
Velocity 8.00 m/s Circular mm 1995
Velocity Pressure 38.4
Duct Loss / metre 0
Sum of "k" Factors 250.00
Duct Length 50.00 m System (approx.) loss 9615
CIRCULAR EQUIVALENTS OF RECTANGULAR DUCTS
ENTER
RECTANGULAR DUCT SIZE, mm 2132 x 2132

4. 1768
Dia. Pa Pa
Pa
ANSWER
2406 mm dia.

5. <<<Back
ENTER
Original System Data
Fan Volume
Fan Pressure
Fan Speed
Fan Power
2.78 m3
/s (If you don't know the fan power, it should
600 Pa be around………. 2.1 kW)
1350 rpm
2 kW Fan Effy.% = {Vol (m3
/s) x Total Press. (Pa)} ÷ (Abs. Power (W) x 10)
78.0
CHANGE NEW
Fan Volume 2.78 m3
/s Fan Pressure 600 Pa rpm kW
Fan Speed
Fan Power
1350
2.0
440v / …. 3.4 Amps

6. h
<<<Back
ENTER ANSWER
Airflow Volume 0.10 m3
/s m/s 4.47 Velocity t
Required Pressurisation 50 Pa mm 150 x 150
Perimeter of door
Width of gap
Room
pressurisatio
n
5.90 m m3
/s 0.069 Air loss th
2 (typ 2mm) Pa
50

7. rough opening
Pressure relief outlet
rough closed door

8. <<<Back DUCTWORK PRESSURE LOSS CALCULATION
System:
Ductwork Element
Duct size (mm) (or) Equiv.
Dia (mm)
Volume
(m3
/s)
Velocity
(m/s)
Vp
(Pa)
Fitting
"k"
Length
(m)
Loss
(Pa)
W x H Dia
Supply
Plenum Exit 250 x 250 282 0.350 5.60 18.8 4.30 80.9
Duct 400 x 400 451 0.525 3.28 6.5 15.0 3.4
Fire Damper 400 x 400 451 0.525 3.28 6.5 0.50 3.2
Bend 400 x 400 451 0.525 3.28 6.5 0.35 2.3
Bend 400 x 400 451 0.525 3.28 6.5 0.35 2.3
Bend 400 x 400 451 0.525 3.28 6.5 0.35 2.3
Bend 400 x 400 451 0.525 3.28 6.5 0.35 2.3
Bend 400 x 400 451 0.525 3.28 6.5 0.35 2.3
VCD 400 x 400 451 0.525 3.28 6.5 0.27 1.7
Supply Grille OBD 400 x 400 451 0.525 3.28 6.5 0.52 3.4
Supply Grille 400 x 400 451 0.525 3.28 6.5 1.50 9.7
x
Supply Total 113.7
Margin 10% 11.4
Total 125
Exhaust
Exhaust EC Grille 400 x 400 451 0.525 3.28 6.5 2.00 12.9
Duct 300 x 300 339 0.525 5.83 20.4 4.2 4.0
Pressure Relief Damper 300 x 300 339 0.525 5.83 20.4 2.30 47.0
Fire Damper 300 x 300 339 0.525 5.83 20.4 0.20 4.1
Bend 300 x 300 339 0.525 5.83 20.4 1.0 1.0
Bend 300 x 300 339 0.525 5.83 20.4 1.0 1.0
Bend 300 x 300 339 0.525 5.83 20.4 1.0 1.0
Fire Damper 300 x 300 339 0.525 5.83 20.4 0.20 4.1
Plenum Entry 300 x 300 339 0.525 5.83 20.4 0.33 6.7
Plenum Outlet 450 x 200 339 0.525 5.83 20.4 0.23 4.7
Duct 450 x 200 339 0.525 5.83 20.4 6.9 6.7
30o
Bend 450 x 200 339 0.525 5.83 20.4 0.41 8.4
30o
Bend 450 x 200 339 0.525 5.83 20.4 0.41 8.4
Duct 350 x 250 334 0.525 6.00 21.6 11.9 12.4
C/S (450x200) x (350x250) 350 x 250 334 0.525 6.00 21.6 0.02 0.4
Bend 350 x 250 334 0.525 6.00 21.6 0.35 7.6
Bend 350 x 250 334 0.525 6.00 21.6 0.35 7.6
45o
Bend 350 x 250 334 0.525 6.00 21.6 0.18 3.9
45o
Bend 350 x 250 334 0.525 6.00 21.6 0.18 3.9
Extract Total 145.5
Manual Entry:- Pressurisation (incl in
PRD) Windage Factor (>10%)
Margin 10%
15
Total 160

9. <<<Back Psychrometric Chart
CIBSE
TEXACO CAPTAIN
ADDITIONAL ESP DRIVES FOR ESP SWITCHROOM
OPTION 1 - USING
SEAWATER COOLING COIL
EXISTING PRE-COOLER
AIR ON AT 23OC/75%rh
OFF AT 18OC/95%rh
DUCT GAIN = 2OC
ADDITIONAL COOLING COIL
AIR ON AT 20OCdb/18OC wb
OFF AT 14OCdb/95%rh
DUCT GAIN =1OC.
SUPPLY TO ROOM AT 15OC.
TEMP. RISE DUE TO
EQUIPMENT 22kW
HEAT GAIN = 3.46OC.
TEMP. RISE DUE TO NEW
PANELS' 52.22kW
HEAT GAIN = 8.22OC.
TEMP. RISE DUE TO EXISTING PANELS' 102kW
HEAT GAIN = 16.68OC.
DISCHARGE TO
ATMOSPHERE
COOLING LOAD =
5.25 x (51.5 - 39.3)/0.8255 = 77.6kW

10. Duct Size
Flange length
Backmark
Span
150 150
310 310
40 40
230 230
M6
M8
M10
M12
150mm pitches
covering
fill
1 1
150 150
40 40
M8
M10
M12
Amended 150 pitches
Amended covering
Amended fill
0 0
0 0
115 115
Answer 150 pitches
Answer covering
Answer fill
0 0
0 0
115 115
Holes 4 4
<<<Back
ENTER
Flange Drilling
Duct Width Duct
Height OR Duct Dia.
Metal Thickness
150 mm mm mm Duct
Side
Backmark
See Note
Remnant
See Note
Pitches @
150mm
Holes /
Bolts
150
200 150 40 115 0 8
M12
3 150 40 115 0
Spool Length 60 m Backmark: Distance from the outer edge of flange to corner hole
Remnant: Distance between corner hole and first pitch hole
Flanges:
Angle size Flg.
Thickness
12 No
mm Duct Weight (Rectangular)
80
5 mm Item Material
m3
Weight kg Total kg
Duct 0.108 846.7 922.0
Density of Material 7840 kg/m3
Flanges 0.0096 75.3
(Mild Steel 7840 kg/m3
) Duct Weight (Circular)
(St/St 7900 kg/m3
) Duct Dia. Area m2 Vol. m3 Weight kg
200 1.8857143 0.005657 44.4

11. 0.85
High Low
Specific Enthalpy 129.40 99.98 KJ/kg
Moisture Content 0.0367 0.0273 kg/kg
<<< Back
in
Airflow 5.889 m3
/s
Sp Vol m3
/kg
Heating Cooling
Air Mix Q1 Q2 Q3
Airflow 3.433 2.456 5.889 m3
/s
Mix % 58.30 41.l7 100 %
Sp Enthalpy
M.Content
Temperature
46.00 59.80 #WERT! KJ/kg
kg/kg
O
C
0.0115 0.0100 #WERT!
23.00 23.00 #WERT!
HEATING
Sensible Heating 56.46 kW
Humidification 147.37 kW
Total Change 203.83 kW
Moisture Added 0.0653 l/s

12. -
<<< Back
LOAD ESTIMATE SHEET
JOB/REF No. ESTIMATED BY:- DATE:-
LOCATION:- CHECKED BY:- DATE:-
SHEET OF APPROVED BY:- DATE:-
TRANSMITTED HEAT GAINS AND LOSSES
ITEM
No.
DESCRIPTION AREA,
m2
U
VALUE
WINTER
TEMP DIFF O
C
HEAT LOSS,
W.
SUMMER TEMP
DIFF O
C
HEAT
GAIN, W.
1 EXT. WALL GROSS. 400 - - - - -
2 EXT. GLASS. 30 21 0 7 0
3 EXT. WALL NETT. 370 0.6 21 4662 7 1554
4 INT. WALLS. 190 0.8 6 912 6 912
5 INT. GLASS. 10 5.6 6 336 6 336
6 FLOOR. 200 0.36 21 1512 0 0
7 ROOF. 200 1.5 21 6300 7 2100
8 MISC. 0 0 0 0 0
9 TOTAL GAINS AND LOSSES, W. 13722 4902
SOLAR HEAT GAINS AREA, m2
U
VALUE
teo,o
C. ti,o
C. TEMP DIFF O
C HEAT GAIN,
W.
10 WALL. 370 0.6 43.6 21 22.6 5017
11 WALL. 40 0.6 27.5 21 6.5 156
12 GLASS. 30 5.6 43.6 21 22.6 3797
13 GLASS. 0 0
14 ROOF. 200 1.5 43.2 21 22.2 6660
15 ROOFLIGHTS. 0 5.6 43.2 21 22.2 0
16 MISC. 0 0
17 TOTAL SOLAR HEAT GAINS, W. 15630
BODY GAINS SENS., W. LAT., W. HEAT GAIN SUMMARY
18 NO. 24 x 100 2400 ITEM No. ITEM GAIN, W.
19 NO. x 0 9 TRANSMITTANCE. 4902
20 NO. 24 x 50 1200 17 SOLAR. 15630
21 TOTAL BODY GAIN. 2400 1200 21 BODY. (SENSIBLE). 2400
EQUIPMENT GAINS 28 EQUIPMENT. 13550
22 LIGHTING. 60 200 12000 31 INFILTRATION. 4706
23 SMALL MOTORS 350 1 350 32 TOTAL SENSIBLE. 41188
24 LARGE MOTORS 600 2 1200 33 TOTAL LATENT. 1200
25 ELECTRICAL PLANT 0 34 TOTAL HEAT GAIN. 42388
26 GAS PLANT 0 35 S.H.R.= (ITEM 32/ITEM 34) % 97.17%
27 MISC. 0 36 d.b.SUPPLY AIR TEMP.O
C 11
28 TOTAL EQUIPMENT GAINS, W. 13550 37 w.b. SUPPLY AIR TEMP.O
C 10
INFILTRATION GAINS 38 d.b. SUPPLY AIR TEMP. RISE O
C 10
29 ac/h HEIGHT LENGTH WIDTH 39 PRELIMINARY S.A.V. (m3
/s) 3.52
30 0.5 20 20 10 4706 41 DUCT GAIN = SAVx1.21x 2O
C, W 8514
31 TOTAL INFILTRATION GAINS. 4706 42 S.A.V. INC. DUCT GAIN (ITEM 32 + ITEM
41)*1.21*ITEM 38
4.21
DESIGN DATA
SUMMER To, O
C Ti, O
C 43 F.A REQ.=Occupancy.x m3
/s/head. 24 X
0.015
0.36
d.b. TEMPERATURE 28 21
w.b. TEMPERATURE 44 FRESH AIR GAIN, W = ITEM 43 x 1.21 x
(To-Ti)
3049
DEW POINT
RELATIVE HUMIDITY 50% 50% COOLING LOAD, W
ENTHALPY ITEM 34 42388
MOISTURE CONTENT ITEM 41 8514
WINTER d.b. TEMP. 0 45 TOTAL COOLING LOAD, W. 50902
LATITUDE:- 46 EQUIV. COOLING LOAD, T.R. 14.47
DATE:- 24th Aug. TIME:- 12:00 Notes: No. of Air Changes per hour = 3.79
WALL:- LIGHT MEDIUM DARK
ROOF:- LIGHT MEDIUM
DARK GLAZING:-
AWNINGS SHADE
BARE
All Temperatures, U-Values and other Design Data to be
obtained from relevant C.I.B.S.E. Guide.
All dimensions in metres.

13. <<<Back
ENTER
Imperial to Metric
cfm
gpm
ft/min
Btu/hr
HP
mp
h knot
inches
feet
sq.
yards
lbs
gallon
"
water
o
F
o
C
29 0.014 m3
/s ENTER
l/s Pressure Pa
33 2.50
1000 5.08 m/s 1000
50,000 14.654 kW
kW read
1 0.735
21 33.79 km/h m/s mm
m m2
kg litres Pa
o
C
1000 N/m2
"wg mm wg
"hg
mm hg psi torr
m.bar
bar
1 0.514 4.015
1 25.4 102
22 6.706 0.2953
23 19.231 7.518797
2.2 0.998 0.145
1 4.55 7.518797
45 11210 10
70 21.11 0.01
50 122 o
F

15. Date
Start Date: 22-Okt-01 Days freq. 1
Days long 13 <<<Back M Tu W Th F Sa Su M Tu W Th F Sa
Today's date is: 23-Mär-21 Day No >> 1 2 3 4 5 6 7 8 9 10 11 12 13
Ref
ACTIVITIES
22.Okt.01
23.Okt.01
24.Okt.01
25.Okt.01
26.Okt.01
27.Okt.01
28.Okt.01
29.Okt.01
30.Okt.01
31.Okt.01
01.Nov.01
02.Nov.01
03.Nov.01

26. <<<Back
CALCULATION OF THERMAL TRANSMITTANCE (U-VALUE) W/m2o
C)
Composite Structures With Air Gap Composite Structures Without Air Gap
GO TO 'k' Factors>>>
Typical 'k' Factors for Various Materials (W/mo
C) :- Back to Top
Surface:- Wall
(Enter description)
Material
(Enter description)
Thickness
(mm)
K value
(W/mo
C)
1 Steel Cladding L1 5 50
2 Fibre Board Slabs L2 100 0.057
3 Air Gap L3 50 0.026
4 Plasterboard L4 15 0.16
U Value Heat Flow (W/m2o
C)
Horiz. 0.243
Up 0.248
Down 0.244
HEAT FLOW
HORIZ. UP DOWN
Rsi 0.13 0.1 0.17
Rso 0.04 0.04 0.04
Rsi+Rso 0.17 0.14 0.21
R air gap 0.18 0.12 0.12
R total 0.52 0.4 0.54
L1 (m) 0.005 0.005 0.005
K1 50 50 50
L2 (m) 0.1 0.1 0.1
K2 0.057 0.057 0.057
L3 (m) 0.05 0.05 0.05
K3 0.026 0.026 0.026
L4 (m) 0.015 0.015 0.015
K4 0.16 0.16 0.16
N.B:- Enter 'k' from table below.
Where no material is used enter L=0 & K=1.
U-value =
(W/m2o
C)
0.243 0.248 0.244
Surface:- Wall
(Enter description)
Material
(Enter description)
Thickness
(mm)
K value
(W/mo
C)
1 Steel Cladding L1 5 50
2 Fibre Board Slabs L2 100 0.057
3 L3 0 1
4 Plasterboard L4 15 0.16
U Value Heat Flow (W/m2o
C)
Horiz. 0.495
Up 0.503
Down 0.486
HEAT FLOW
HORIZ. UP DOWN
Rsi 0.13 0.1 0.17
Rso 0.04 0.04 0.04
Rsi+Rso 0.17 0.14 0.21
R air gap 0 0 0
R total 0.34 0.28 0.42
L1 (m) 0.005 0.005 0.005
K1 50 50 50
L2 (m) 0.1 0.1 0.1
K2 0.057 0.057 0.057
L3 (m) 0 0 0
K3 1 1 1
L4 (m) 0.015 0.015 0.015
K4 0.16 0.16 0.16
N.B:- Enter 'k' from table below.
Where no material is used enter L=0 & K=1.
U-value =
(W/m2o
C)
0.495 0.503 0.486
Walls Roofs
Brick 0.84 Asphalt 0.9
Dense Plaster 0.5 Concrete 1.4
Lightweight Plaster 0.16 Lightw't Concrete 0.38
Plasterboard 0.16 Dense Plaster 0.5
Exp. Polystyrene 0.033 Lightweight Plaster 0.1
Lightw't Concrete 0.38 Concrete 0.16
Concrete 1.4 Phenolic Foam 0.038
Concrete Block 0.19 Fibreboard 0.057
Asbestos Sheet 0.36 Exp. Polystyrene 0.033
Woodwool Slab 0.09 Tiles 0.84
Glass Fibre 0.035 Roofing Felt 0.19
Timber 0.14 Glass Fibre 0.035
Weatherboarding 0.14 Asbestos Sheet 0.36
Air 0.026 Slate 2
Miscellaneous Materials
Bitumen 0.85 Granite 2.5
Carpet - woollen 0.055 Wood Chipboard 0.15
Carpet Underlay 0.045 Woodwool Slab 0.11
Corkboard 0.042 Water 0.6
Glass Sheet 1.05 Seawater 0.58
Gravel 0.3 Carbon Steel 50
Hardboard 0.08 High Alloy Steel 15
PVC Flooring 0.35 Fresh Snow 0.17
Phenolic Foam 0.037 Compacted Snow 0.43

27. Airflow 3.62
PROCESS ON PROCESS OFF
Sensible Cooling
De-humidification
Energy Change
Water Removed
42.3
46.0
89.2
0.02035
73.26797
kW
kW
kW
litres/s
kg/h
23 C (db)
% rh
14.8 C (db)
% rh
80 95
HYGROMETRIC DATA (0o
C to 45o
C)
1
m3
/s
HYGROMETRIC TABLES
DRY BULB
TEMP.
o
C.
RELATIVE
HUMIDITY
%
MOISTURE
CONTENT
kg/kg
SPECIFIC
VOLUME
m3
/kg
SPECIFIC
ENTHALPY
kJ/kg
SATURATED
MOISTURE
CONTENT, kg/kg
ENTHALPY
OF DRY AIR
kJ/kg
SATURATED
VAPOUR
PRESS, Pa
0 50 0.0019 0.7758 4.8310 0.003789 0.000 6.108
1 50 0.0020 0.7788 6.2016 0.004075 1.006 6.566
2 50 0.0022 0.7819 7.5965 0.004380 2.012 7.055
3 50 0.0024 0.7849 9.0182 0.004706 3.018 7.575
4 50 0.0025 0.7880 10.4666 0.005053 4.024 8.129
5 50 0.0027 0.7911 11.9431 0.005422 5.030 8.719
6 30 0.0017 0.7927 10.4852 0.005816 6.036 9.346
7 50 0.0031 0.7973 14.9916 0.006235 7.042 10.013
8 50 0.0033 0.8004 16.5663 0.006681 8.048 10.720
9 50 0.0036 0.8035 18.1766 0.007155 9.054 11.470
10 95 0.0073 0.8112 28.6139 0.007659 10.060 12.270
11 95 0.0078 0.8147 30.9100 0.008194 11.060 13.120
12 50 0.0044 0.8131 23.2428 0.008763 12.070 14.020
13 95 0.0089 0.8219 35.7716 0.009367 13.080 14.970
14 95 0.0095 0.8255 38.3292 0.010010 14.080 15.980
15 50 0.0054 0.8230 28.7325 0.010700 15.090 17.040
16 50 0.0057 0.8263 30.6478 0.011410 16.100 18.170
17 50 0.0061 0.8296 32.6168 0.012170 17.100 19.360
18 50 0.0065 0.8330 34.6595 0.012980 18.110 20.630
19 50 0.0069 0.8365 36.7560 0.013840 19.110 21.960
20 80 0.0118 0.8459 50.2000 0.014750 20.110 23.370
21 50 0.0079 0.8435 41.1603 0.015710 21.130 24.860
22 50 0.0084 0.8470 43.4608 0.016730 22.130 26.430
23 50 0.0089 0.8506 45.8478 0.017810 23.140 28.080
24 50 0.0095 0.8543 48.3013 0.018950 24.140 29.830
25 60 0.0121 0.8607 55.9948 0.020160 25.150 31.660
26 50 0.0107 0.8617 53.4833 0.021430 26.160 33.600
27 50 0.0114 0.8655 56.2045 0.022780 27.160 35.640
28 50 0.0121 0.8694 59.0378 0.024210 28.170 37.790
29 50 0.0129 0.8733 61.9730 0.025720 29.180 40.050
30 50 0.0137 0.8773 65.0003 0.027310 30.180 42.420
31 50 0.0145 0.8813 68.1650 0.029000 31.190 44.920
32 50 0.0154 0.8855 71.4318 0.030770 32.200 47.540
33 50 0.0163 0.8897 74.8288 0.032650 33.200 50.290
34 50 0.0173 0.8940 78.3633 0.034630 34.210 53.190
35 75 0.0275 0.9112 105.4661 0.036730 35.220 56.220
36 50 0.0195 0.9028 85.8685 0.038940 36.220 59.400
37 50 0.0206 0.9074 89.8620 0.041280 37.230 62.740
38 50 0.0219 0.9121 94.0085 0.043740 38.240 66.240
39 50 0.0232 0.9169 98.3363 0.046350 39.240 69.910
40 50 0.0246 0.9218 102.8525 0.049100 40.250 73.750
41 50 0.0260 0.9268 107.5600 0.052000 41.260 77.780
42 50 0.0275 0.9319 112.3850 0.055000 42.260 81.990
43 50 0.0292 0.9372 117.6025 0.058300 43.270 86.400
44 50 0.0309 0.9426 122.9858 0.061730 44.280 91.000
45 50 0.0327 0.9482 128.5885 0.065340 45.280 95.820
FOR ANY GIVEN TEMPERATURE, ENTER A HUMIDITY VALUE TO DETERMINE RELEVANT PSYCHROMETRIC DATA
14.25 g/kg Moisture Content 9.51 g/kg
0.8578 m3
/kg Specific Volume 0.8278 m3
/kg
59.472 kJ/kg Specific Enthalpy 38.329 kJ/kg
17.81 g/kg Saturation Moisture Content 10.01 g/kg
23.140 kJ/kg Specific Enthalpy Dry Air 14.080 kJ/kg
28.08 Pa Saturation Vapour Pressure 15.98 Pa

28. 14
84 95
Moisture content At inlet
Moisture content At outlet
Moisture change
0.076830 kg
0.060475 kg
-0.016355 kg
-58.88 kg/h
Sensible change
Latent change
-38.35 kW
-46.71 kW
Total change -85 kW
HVAC Process
Energy Change 85 kW
m3
/s
5.25
Inlet Condition Fan Cooling Outlet Condition
20 C (db)
% rh
C (db)
% rh
23.37000 Pa Saturated Vapour Pressure 15.98000 Pa
-85
kW Total
0.01239
0.84664
51.70450
kg/kg
m3
/kg
kJ/kg
kW
-38.3
Moisture Content -46.71
Specific Volume
Specific Enthalpy
Sensible Cooling Latent
Cooling
0.00951
0.82554
38.32923
kg/kg m3
/kg
kJ/kg
0.01475
20.11000
kg kJ/kg Specific Moisture Conteny Enthalpy Dry air #### -58.88 kg/h Water
Removed
0.01001
14.08000
kg kJ/kg

29. HYGROMETRIC TABLES
Dry Bulb
Temp.
o
C.
R.H.
%
Moisture
Content
kg/kg
Specific
Volume
Specific
Enthalpy
Saturated
Moisture
Content kg
Enthalpy
of dry air
kJ/kg
SATURATED
VAPOUR
PRESS, Pa
m3
/kg kJ/kg
0 50 0.0019 0.7758 4.8310 0.003789 0.000 6.108
1 50 0.0020 0.7788 6.2016 0.004075 1.006 6.566
2 50 0.0022 0.7819 7.5965 0.004380 2.012 7.055
3 50 0.0024 0.7849 9.0182 0.004706 3.018 7.575
4 50 0.0025 0.7880 10.4666 0.005053 4.024 8.129
5 50 0.0027 0.7911 11.9431 0.005422 5.030 8.719
6 30 0.0017 0.7927 10.4852 0.005816 6.036 9.346
7 50 0.0031 0.7973 14.9916 0.006235 7.042 10.013
8 50 0.0033 0.8004 16.5663 0.006681 8.048 10.720
9 50 0.0036 0.8035 18.1766 0.007155 9.054 11.470
10 50 0.0038 0.8067 19.8252 0.007659 10.060 12.270
11 50 0.0041 0.8099 21.5074 0.008194 11.060 13.120
12 50 0.0044 0.8131 23.2428 0.008763 12.070 14.020
13 50 0.0047 0.8164 25.0229 0.009367 13.080 14.970
14 50 0.0050 0.8197 26.8428 0.010010 14.080 15.980
15 50 0.0054 0.8230 28.7325 0.010700 15.090 17.040
16 50 0.0057 0.8263 30.6478 0.011410 16.100 18.170
17 50 0.0061 0.8296 32.6168 0.012170 17.100 19.360
18 50 0.0065 0.8330 34.6595 0.012980 18.110 20.630
19 50 0.0069 0.8365 36.7560 0.013840 19.110 21.960
20 78 0.0115 0.8455 49.4478 0.014750 20.110 23.370
21 50 0.0079 0.8435 41.1603 0.015710 21.130 24.860
22 50 0.0084 0.8470 43.4608 0.016730 22.130 26.430
23 50 0.0089 0.8506 45.8478 0.017810 23.140 28.080
24 50 0.0095 0.8543 48.3013 0.018950 24.140 29.830
25 50 0.0101 0.8580 50.8540 0.020160 25.150 31.660
26 50 0.0107 0.8617 53.4833 0.021430 26.160 33.600
27 50 0.0114 0.8655 56.2045 0.022780 27.160 35.640
28 50 0.0121 0.8694 59.0378 0.024210 28.170 37.790
29 50 0.0129 0.8733 61.9730 0.025720 29.180 40.050
30 50 0.0137 0.8773 65.0003 0.027310 30.180 42.420
31 50 0.0145 0.8813 68.1650 0.029000 31.190 44.920
32 50 0.0154 0.8855 71.4318 0.030770 32.200 47.540
33 50 0.0163 0.8897 74.8288 0.032650 33.200 50.290
34 50 0.0173 0.8940 78.3633 0.034630 34.210 53.190
35 50 0.0184 0.8984 82.0508 0.036730 35.220 56.220
36 50 0.0195 0.9028 85.8685 0.038940 36.220 59.400
37 50 0.0206 0.9074 89.8620 0.041280 37.230 62.740
38 50 0.0219 0.9121 94.0085 0.043740 38.240 66.240
39 50 0.0232 0.9169 98.3363 0.046350 39.240 69.910
40 50 0.0246 0.9218 102.8525 0.049100 40.250 73.750
41 50 0.0260 0.9268 107.5600 0.052000 41.260 77.780
42 50 0.0275 0.9319 112.3850 0.055000 42.260 81.990
43 50 0.0292 0.9372 117.6025 0.058300 43.270 86.400
44 50 0.0309 0.9426 122.9858 0.061730 44.280 91.000
45 50 0.0327 0.9482 128.5885 0.065340 45.280 95.820
FOR ANY GIVEN TEMPERATURE, ENTER A HUMIDITY VALUE TO DETERMINE RELEVANT
PSYCHROMETRIC DATA

30. 1
2
3
4
5
6
Specific Enthalpy Volume
m3
/s
Sp. Vol
m3
/kg
Air on Air off kW
kJ/kg kjJ/kg db % db %
20 54 1 0.883 10 50% 35 20% -38.505
20 30 1 0.847 10 50% 25 10% -11.806
116 76 1 0.871 40 60% 25 100% 45.924
79 39 1 0.839 45 20% 20 50% 47.676
79 65 1 0.877 45 20% 30 50% 15.964
56 44 1 0.866 42 10% 30 20% 13.857
44 56 1 0.866 30 20% 42 10% -13.857

31. <<<Back REV. NO. A B C D Sheet No of
SOUND ATTENUATION CALC. BY Job No.
JOB: SYSTEM: CHECKED Doc. No.
CALCULATIONS DATA
SOURCE
OCTAVE BAND MID FREQUENCY, Hz 125
250 500 1000 2000 4000
57 49 44 40 37
35
3 3 3 3 3 3
NO.
8000 OFF
63
1 MAXIMUM SOUND PRESSURE LEVEL = NR 40 TABLE 1 67 33
2 ROOM AND TERMINAL EFFECT FIG.1 3 3
3 ALLOWANCE FOR END REFLECTION TABLE 2 9 5 1
0.3 0.15 0.03
7.5 3.75 0.75
0.3 0.15 0.03
0.9 0.18
6 6
5 5 5
5
80.65 64.93 58
54
-3 -3 -3
-3
55 51
73 70
18 19
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
6 6 6 6
0
4 DUCTWORK ATTENUATION-TERMINAL TO CHECKPOINT (Duct
length given in metres against Table 3 data)
TABLE 3 0 25
0
5 ELBOW ATTENUATION-TERMINAL TO CHECKPOINT (No.
of bends indicated against Table 4 data)
TABLE 4 0 6
1.8 0
6 PWL SPLIT-BRANCH TO TERMINALS TABLE 5 6 6
7 PWL SPLIT-MAIN DUCT TO BRANCH TABLE 6 5 5 5
51 49
-3 -3
48 46
68 66
20 20
5
8 CALCULATED PWL AT CHECKPOINT TOTAL 1 to 7 99.3 47
9 DEDUCT 3dB SAFETY FACTOR -3 -3
10 PERMISSIBLE PWL AT CHECKPOINT 96.3 77.65 61.93
83 77
5.35 15.07
44
11 POWER LEVEL OF NOISE SOURCE AT CHECKPOINT Manfr's Data 91 64
12 DYNAMIC INSERTION LOSS REQUIRED 11 minus 10 -5.3 20
DESIGN DATA TABLE 1 NOISE LEVELS FOR SPACES, dB.
39 31 24 20 17
44 35 29 25 22
48 40 34 30 27
52 45 39 35 32
57 49 44 40 37
61 54 48 45 42
65 59 53 50 47
70 63 58 55 52
74 68 63 60 57
dBA
LOCATION: NR20 51 14 13 30
NR25 55 20 18 35
ROOM DIMENSIONS:
Length, m Width, m 12
5
Volume, m3
= 240 NR30 59 25 23 39
Height, m Floor Area, m2
= 60 NR35 63 30 28 44
4 Surface Area, m2
= 256 NR40 67 35 33 48
NR45 71 40 38 53
NR50 75 45 43 58
MAX. PERMISSIBLE NOISE LEVEL (NR) = 40 NR55 79 50 49 62
NR60 83 55 54 67
NO.of TERMINALS = 8 NR65 87 78 72
83 77
68 65 62
73 70 68
61 59 72
NR70 91 66 64 77
TABLE 5 PWL SPLIT-BRANCH TO TERMINALS
ROOM CHARACTERISTIC
SOFT AVER'GE HARD
X
TABLE 2 ATTENUATION DUE TO END REFLECTION AT
DUCT OPENINGS,dB
(Select nearest applicable line)
DUCT EQUIV
DIA, mm.
125 13 9 5 1 0 0 0 0
250 9 5 1 0 0 0 0 0
500 5 1 0 0 0 0 0 0
1000 1 0 0 0 0 0 0 0
TABLE 3 ATTENUATION OF UNLINED SHEET METAL
DUCTS, dB / metre.
DUCT SIZE
150 X 150 0.6 0.45 0.3 0 0 0 0 0
600 X 600 0.6 0.3 0.15 0 0 0 0 0
850 X 850 0.3 0.15 0.03 0 0 0 0 0
<300 Dia. 0.1 0.1 0 0 0 0 0 0
>300 Dia. 0 0 0 0 0 0 0 0
TABLE 4 ATTENUATION OF UNLINED SHEET METAL
BENDS, dB.
(Select nearest applicable line)
DUCT DIA.
OR WIDTH.
250 Max. 0 1.2.4 2.5.8 3.4.5 3 3
500 Max. 0 1.2.4 2.5.8 3.4.5 3 3 3
1000 Max. 0 1.2.4 2.5.8 3.4.5 3 3 3 3
2000 Max. 1.2.4 2.5.8 3.4.5 3 3 3 3 3
Where 3-values are shown, use 1st for round bends,
2nd for sq. bends with vanes, 3rd for bends with no vanes.
No. Terminals 1 2 3 4 8 10 20 40 100
dB Allowance 0 3 5 6 9 10 13 16 20
TABLE 6 PWL SPLIT-MAIN DUCT TO BRANCH
dB to add to
branch PWL to
give main duct
PWL.
AREA OF BRANCH EXPRESSED AS % OF MAIN
BRANCH AREA
0.2 0.5 1 2 5 10 20 50
27 23 20 17 13 10 7 3

32. Back
BLACK MILD STEEL PIPE SIZES FOR VARIOUS kW DUTIES.
GALVANISED PIPES FOR HWS AND
CWS SYSTEMS
Diameter,
mm.
Max. Water
Flow Rate, l/s.
kW Rated Output Max.
Simultaneous
Demand Units
Equivalent
Flow Rate
l/s.
Equivalent
Pressure
Drop, Pa.
HWS
Return Dia.
mm
T=5o
C.
T=10o
C.
T=15o
C.
10 0.03 0.6 1.3 2
15 0.07 1.5 3 4.5 10 0.06 200 15
20 0.16 3.4 6.7 10 25 0.15 220 15
25 0.35 7 15 22 50 0.3 250 20
32 0.71 15 30 45 150 0.6 210 20
40 1.0 20 40 60 250 0.9 200 25
50 2.0 40 80 120 500 1.5 150 32
65 4.0 85 170 250 1500 3.6 210 32
80 6.0 125 250 375 2500 5.5 200 40
100 13.0 275 550 800 5000 10.0 160 50
TYPICAL PRACTICAL DEMAND UNITS
Basin or Bidet ( Hot & Cold) 3 1.5
ea Sink ( Hot & Cold) 15 7.5 each
Bath ( Hot & Cold) 20 10 each
Shower ( Hot & Cold) 8 4 ea
WC (Cold only) 8 only
150 36.0 750 1500 2250
200 90.0 1850 3700 5500
NOTE
1)For LPHW heating, typical T= 82o
C - 71o
C = 11o
C.
2)For fan coil unit cooling, typical T= 12o
C - 7o
C = 5o
C.

33. MODULE INTEGRITY
TEST RESULTS
JOB NO.
LOCATION
DATE
TEST BY
WITNESS
Module / Area Tested: Control Room
The following data is used to calculate the actual leakage rate for the module
Allowable Leakage Rate = 0.20 air changes per hour (ac/h)
Volume of Module = 548.00
Maximum Permissible Supply (Leakage) Air Volume = 109.60
(Based on 0.2 ac/h)
(i.e.
0.030
MEASURED RESULTS
Max Permitted Leakage Rate for Control Room = 109.60
Leakage Rate During Pressurisation = 110.40
Leakage Rate During Depressurisation = 108.20
Average Measured Air Leakage Rate = 109.30
Final Test Result PASS
Comments:

35. m3
m3
/h
m3
/s)
m3
/h
m3
/h
m3
/h
m3
/h

37. <<Back
Temp @ 60 mins 36.01
Elapsed
Time
Minutes
Module heat
Loss
kJ
Surplus Module
Energy
kJ
Temp.
o
C
40.00
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00
1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58
Minutes
Module
Temp
(C)
Accommodation Modu le
length
breadth
height
15 m m m
15
30.25
Surface Area (A)
Enclosed Volume
2265
6806.25
m2
m3
U
(initial) Ti
To Gains
0.3 W/m2o
C
o
C
o
C
kW (kJ/s)
24
35
24
826 Joules will raise 1 m3
air by 1 deg C
826 Joules will raise 6806.25 m3
air by 0.000147 deg C
24 (Available Heat input Joules / second)
34 (Seconds to raise air temp. by 1deg C.)
0.6 (Minutes to raise air temp. by 1deg C.)
0 24
1 -448.47 1888.47 24.23
2 -439.04 1879.04 24.46
3 -429.66 1869.66 24.69
4 -420.33 1860.33 24.92
5 -411.04 1851.04 25.14
6 -401.80 1841.80 25.37
7 -392.61 1832.61 25.59
8 -383.46 1823.46 25.82
9 -374.36 1814.36 26.04
10 -365.30 1805.30 26.26
11 -356.29 1796.29 26.48
12 -347.33 1787.33 26.70
13 -338.40 1778.40 26.92
14 -329.53 1769.53 27.13
15 -320.69 1760.69 27.35
16 -311.90 1751.90 27.56
17 -303.16 1743.16 27.78
18 -294.46 1734.46 27.99
19 -285.80 1725.80 28.20
20 -277.19 1717.19 28.41
21 -268.61 1708.61 28.62
22 -260.08 1700.08 28.83
23 -251.60 1691.60 29.04
24 -243.15 1683.15 29.24
25 -234.75 1674.75 29.45
26 -226.39 1666.39 29.65
27 -218.07 1658.07 29.85
28 -209.80 1649.80 30.06
29 -201.56 1641.56 30.26
30 -193.37 1633.37 30.46
31 -185.21 1625.21 30.66
32 -177.10 1617.10 30.85
33 -169.03 1609.03 31.05
34 -161.00 1601.00 31.25
35 -153.01 1593.01 31.44
36 -145.05 1585.05 31.64
37 -137.14 1577.14 31.83
38 -129.27 1569.27 32.02
39 -121.44 1561.44 32.21
40 -113.64 1553.64 32.40
41 -105.89 1545.89 32.59
42 -98.17 1538.17 32.78
43 -90.49 1530.49 32.97
44 -82.85 1522.85 33.15
45 -75.25 1515.25 33.34
46 -67.69 1507.69 33.52
47 -60.16 1500.16 33.71
48 -52.67 1492.67 33.89
49 -45.22 1485.22 34.07
50 -37.81 1477.81 34.25
51 -30.43 1470.43 34.43
52 -23.09 1463.09 34.61
53 -15.79 1455.79 34.79
54 -8.52 1448.52 34.97
55 -1.29 1441.29 35.14
56 5.90 1434.10 35.32
57 13.06 1426.94 35.50

38. 58 20.19 1419.81 35.67
59 27.27 1412.73 35.84
60 34.33 1405.67 36.01

39. Accommodation Module
length 15 m
breadth 15 m
height 30.25 m Surface Area (A) 2265
m2 Enclosed Volume 6806.25 m3
U 0.3 w/m2degC (initial) Ti 24 degC
To 10 degC
Gains 58.35 kW (kj/s)
To
Module heat Surplus Module hea Surplus 5
Loss Energy Loss Energy
kj kj kj kj
978.48 2522.52 774.63 2726.37
991.07 2509.93 788.24 2712.76
1003.60 2497.40 801.78 2699.22
0
10
20
30
0
5
10
50
45
40
35
30
25
20
15
5
1
(To) Temp Outside
9
13
17
21
25
29
33
37
41
45
49
(Ti)
Temp
inside
Minutes
1016.07
1028.47
2484.93
2472.53
815.25
828.66
2685.75
2672.34
1040.81 2460.19 842.00 2659.00
1053.09 2447.91 855.27 2645.73
1065.31 2435.69 868.48 2632.52
1077.47 2423.53 881.62 2619.38
1089.57 2411.43 894.70 2606.30
1101.61 2399.39 907.71 2593.29
1113.58 2387.42 920.65 2580.35
1125.50 2375.50 933.53 2567.47
1137.36 2363.64 946.35 2554.65
1149.16 2351.84 959.10 2541.90
1160.90 2340.10 971.79 2529.21
1172.58 2328.42 984.41 2516.59

40. 1184.20 2316.80 996.98 2504.02
1195.77 2305.23 1009.48 2491.52
1207.27 2293.73 1021.91 2479.09
1218.72 2282.28 1034.29 2466.71
1230.12 2270.88 1046.60 2454.40
1241.45 2259.55 1058.85 2442.15
1252.73 2248.27 1071.04 2429.96
1263.95 2237.05 1083.17 2417.83
1275.12 2225.88 1095.24 2405.76
1286.23 2214.77 1107.25 2393.75
1297.29 2203.71 1119.20 2381.80
1308.29 2192.71 1131.09 2369.91
1319.23 2181.77 1142.92 2358.08
1330.12 2170.88 1154.69 2346.31
1340.96 2160.04 1166.40 2334.60
1351.74 2149.26 1178.06 2322.94
1362.47 2138.53 1189.65 2311.35
1373.15 2127.85 1201.19 2299.81
1383.77 2117.23 1212.67 2288.33
1394.34 2106.66 1224.09 2276.91
1404.85 2096.15 1235.46 2265.54
1415.31 2085.69 1246.77 2254.23
1425.73 2075.27 1258.02 2242.98
1436.09 2064.91 1269.22 2231.78
1446.39 2054.61 1280.36 2220.64
1456.65 2044.35 1291.44 2209.56
1466.85 2034.15 1302.47 2198.53
1477.01 2023.99 1313.44 2187.56
1487.11 2013.89 1324.36 2176.64
1497.16 2003.84 1335.23 2165.77
1507.17 1993.83 1346.04 2154.96
1517.12 1983.88 1356.80 2144.20
1527.02 1973.98 1367.50 2133.50
1536.88 1964.12 1378.15 2122.85
1546.68 1954.32 1388.75 2112.25
1556.44 1944.56 1399.29 2101.71
1566.14 1934.86 1409.78 2091.22
1575.80 1925.20 1420.22 2080.78
1585.41 1915.59 1430.61 2070.39
1594.97 1906.03 1440.94 2060.06
1604.49 1896.51 1451.23 2049.77
1613.95 1887.05 1461.46 2039.54
1623.37 1877.63 1471.64 2029.36

41. Module hea Surplus Module hea
Loss Energy Loss
kj kj kj
570.78 2930.22 366.93
585.41 2915.59 382.57
599.96 2901.04 398.14
Surplus Module hea
Loss
kj
Surplus
Energy
kj
Energy
kj
3134.07
3118.43
3102.86
3087.37
163.08
179.74
196.32
212.82
229.23
245.56
261.81
277.98
294.07
310.08
326.01
341.86
357.63
373.32
388.93
404.46
419.92
3337.92
3321.26
3304.68
3288.18
3271.77
3255.44
3239.19
3223.02
3206.93
3190.92
3174.99
3159.14
3143.37
3127.68
3112.07
3096.54
3081.08
614.44 2886.56 413.63
628.85
643.19
657.45
671.65
685.77
699.82
713.81
727.72
741.56
755.34
769.04
782.68
796.25
2872.15
2857.81
2843.55
2829.35
2815.23
2801.18
2787.19
2773.28
2759.44
2745.66
2731.96
2718.32
2704.75
429.04
444.38
459.63
474.81
489.92
504.95
519.91
534.79
549.59
564.33
578.99
593.57
608.08
3071.96
3056.62
3041.37
3026.19
3011.08
2996.05
2981.09
2966.21
2951.41
2936.67
2922.01
2907.43
2892.92
53
57
61

42. 809.75 2691.25 622.53 2878.47 435.30 3065.70
823.18 2677.82 636.89 2864.11 450.60 3050.40
836.55 2664.45 651.19 2849.81 465.83 3035.17
849.85 2651.15 665.42 2835.58 480.98 3020.02
863.09 2637.91 679.57 2821.43 496.06 3004.94
876.25 2624.75 693.65 2807.35 511.06 2989.94
889.36 2611.64 707.67 2793.33 525.98 2975.02
902.39 2598.61 721.61 2779.39 540.83 2960.17
915.36 2585.64 735.49 2765.51 555.61 2945.39
928.27 2572.73 749.29 2751.71 570.31 2930.69
941.11 2559.89 763.03 2737.97 584.94 2916.06
953.89 2547.11 776.69 2724.31 599.50 2901.50
966.61 2534.39 790.29 2710.71 613.98 2887.02
979.26 2521.74 803.82 2697.18 628.39 2872.61
991.84 2509.16 817.29 2683.71 642.73 2858.27
1004.37 2496.63 830.68 2670.32 657.00 2844.00
1016.83 2484.17 844.01 2656.99 671.19 2829.81
1029.23 2471.77 857.28 2643.72 685.32 2815.68
1041.57 2459.43 870.47 2630.53 699.38 2801.62
1053.85 2447.15 883.60 2617.40 713.36 2787.64
1066.06 2434.94 896.67 2604.33 727.28 2773.72
1078.22 2422.78 909.67 2591.33 741.12 2759.88
1090.31 2410.69 922.60 2578.40 754.90 2746.10
1102.35 2398.65 935.48 2565.52 768.61 2732.39
1114.32 2386.68 948.28 2552.72 782.24 2718.76
1126.23 2374.77 961.02 2539.98 795.82 2705.18
1138.09 2362.91 973.70 2527.30 809.32 2691.68
1149.88 2351.12 986.32 2514.68 822.76 2678.24
1161.62 2339.38 998.87 2502.13 836.12 2664.88
1173.30 2327.70 1011.36 2489.64 849.43 2651.57
1184.91 2316.09 1023.79 2477.21 862.66 2638.34
1196.48 2304.52 1036.15 2464.85 875.83 2625.17
1207.98 2293.02 1048.46 2452.54 888.94 2612.06
1219.43 2281.57 1060.70 2440.30 901.98 2599.02
1230.81 2270.19 1072.88 2428.12 914.95 2586.05
1242.15 2258.85 1085.00 2416.00 927.86 2573.14
1253.42 2247.58 1097.06 2403.94 940.70 2560.30
1264.64 2236.36 1109.06 2391.94 953.48 2547.52
1275.81 2225.19 1121.00 2380.00 966.20 2534.80
1286.91 2214.09 1132.88 2368.12 978.85 2522.15
1297.96 2203.04 1144.70 2356.30 991.44 2509.56
1308.96 2192.04 1156.47 2344.53 1003.97 2497.03
1319.90 2181.10 1168.17 2332.83 1016.43 2484.57

43. Module hea
Loss
kj
Surplus
Energy kj
Module hea
Loss
kj
Surplus
Energy kj
Module hea
Loss
kj
Surplus
Energy
kj
-40.77 3541.77 -244.62 3745.62 -448.47 3949.47
-23.09 3524.09 -225.92 3726.92 -428.76 3929.76
-5.50 3506.50 -207.32 3708.32 -409.14 3910.14
12.00 3489.00 -188.81 3689.81 -389.62 3890.62
29.42 3471.58 -170.39 3671.39 -370.20 3871.20
46.75 3454.25 -152.06 3653.06 -350.88 3851.88
63.99 3437.01 -133.83 3634.83 -331.65 3832.65
81.15 3419.85 -115.68 3616.68 -312.52 3813.52
98.22 3402.78 -97.63 3598.63 -293.48 3794.48
115.21 3385.79 -79.67 3580.67 -274.54 3775.54
132.11 3368.89 -61.79 3562.79 -255.69 3756.69
148.92 3352.08 -44.01 3545.01 -236.94 3737.94
165.66 3335.34 -26.31 3527.31 -218.28 3719.28
182.31 3318.69 -8.71 3509.71 -199.72 3700.72
198.87 3302.13 8.81 3492.19 -181.24 3682.24
215.35 3285.65 26.25 3474.75 -162.86 3663.86
231.76 3269.24 43.59 3457.41 -144.57 3645.57

44. 248.07 3252.93 60.85 3440.15 -126.38 3627.38
264.31 3236.69 78.02 3422.98 -108.27 3609.27
280.47 3220.53 95.11 3405.89 -90.25 3591.25
296.55 3204.45 112.11 3388.89 -72.33 3573.33
312.54 3188.46 129.03 3371.97 -54.49 3555.49
328.46 3172.54 145.86 3355.14 -36.74 3537.74
344.29 3156.71 162.61 3338.39 -19.08 3520.08
360.05 3140.95 179.27 3321.73 -1.51 3502.51
375.73 3125.27 195.85 3305.15 15.97 3485.03
391.33 3109.67 212.35 3288.65 33.37 3467.63
406.85 3094.15 228.77 3272.23 50.68 3450.32
422.30 3078.70 245.10 3255.90 67.90 3433.10
437.67 3063.33 261.35 3239.65 85.04 3415.96
452.96 3048.04 277.52 3223.48 102.09 3398.91
468.17 3032.83 293.62 3207.38 119.06 3381.94
483.31 3017.69 309.63 3191.37 135.94 3365.06
498.38 3002.62 325.56 3175.44 152.74 3348.26
513.36 2987.64 341.41 3159.59 169.45 3331.55
528.28 2972.72 357.18 3143.82 186.08 3314.92
543.12 2957.88 372.87 3128.13 202.63 3298.37
557.88 2943.12 388.49 3112.51 219.09 3281.91
572.57 2928.43 404.02 3096.98 235.48 3265.52
587.19 2913.81 419.48 3081.52 251.78 3249.22
601.74 2899.26 434.87 3066.13 268.00 3233.00
616.21 2884.79 450.17 3050.83 284.13 3216.87
630.61 2870.39 465.40 3035.60 300.19 3200.81
644.94 2856.06 480.55 3020.45 316.17 3184.83
659.19 2841.81 495.63 3005.37 332.07 3168.93
673.38 2827.62 510.63 2990.37 347.89 3153.11
687.49 2813.51 525.56 2975.44 363.62 3137.38
701.54 2799.46 540.41 2960.59 379.29 3121.71
715.51 2785.49 555.19 2945.81 394.87 3106.13
729.42 2771.58 569.89 2931.11 410.37 3090.63
743.25 2757.75 584.53 2916.47 425.80 3075.20
757.02 2743.98 599.08 2901.92 441.15 3059.85
770.71 2730.29 613.57 2887.43 456.43 3044.57
784.34 2716.66 627.98 2873.02 471.62 3029.38
797.90 2703.10 642.32 2858.68 486.75 3014.25
811.40 2689.60 656.59 2844.41 501.79 2999.21
824.82 2676.18 670.79 2830.21 516.76 2984.24
838.18 2662.82 684.92 2816.08 531.66 2969.34
851.47 2649.53 698.98 2802.02 546.48 2954.52
864.70 2636.30 712.96 2788.04 561.23 2939.77

45. Minutes 0 5
0 24 24
1 24.31 24.33
2 24.62 24.67
3 24.92 25.00
4 25.23 25.33
5 25.53 25.65
6 25.83 25.98
7 26.13 26.30
8 26.43 26.62
9 26.72 26.94
10 27.02 27.26
11 27.31 27.58
12 27.61 27.90
13 27.90 28.21
14 28.19 28.52
15 28.47 28.84
16 28.76 29.15

46. 17 29.05 29.45
18 29.33 29.76
19 29.61 30.07
20 29.89 30.37
21 30.17 30.67
22 30.45 30.97
23 30.73 31.27
24 31.00 31.57
25 31.28 31.86
26 31.55 32.16
27 31.82 32.45
28 32.09 32.74
29 32.36 33.03
30 32.63 33.32
31 32.89 33.61
32 33.16 33.90
33 33.42 34.18
34 33.68 34.46
35 33.94 34.74
36 34.20 35.02
37 34.46 35.30
38 34.71 35.58
39 34.97 35.86
40 35.22 36.13
41 35.48 36.40
42 35.73 36.68
43 35.98 36.95
44 36.23 37.22
45 36.48 37.48
46 36.72 37.75
47 36.97 38.02
48 37.21 38.28
49 37.45 38.54
50 37.70 38.80
51 37.94 39.06
52 38.18 39.32
53 38.41 39.58
54 38.65 39.83
55 38.89 40.09
56 39.12 40.34
57 39.35 40.60
58 39.59 40.85
59 39.82 41.10
60 40.05 41.34

47. 10 15 20 25 30 35
24 24 24 24 24 24
24.36 24.38 24.41 24.43 24.46 24.48
24.72 24.77 24.82 24.87 24.91 24.96
25.07 25.15 25.22 25.29 25.37 25.44
25.42 25.52 25.62 25.72 25.82 25.92
25.78 25.90 26.02 26.15 26.27 26.39
26.13 26.27 26.42 26.57 26.72 26.87
26.47 26.65 26.82 26.99 27.16 27.33
26.82 27.02 27.21 27.41 27.61 27.80
27.17 27.39 27.61 27.83 28.05 28.27
27.51 27.75 28.00 28.24 28.48 28.73
27.85 28.12 28.38 28.65 28.92 29.19
28.19 28.48 28.77 29.06 29.35 29.65
28.53 28.84 29.16 29.47 29.79 30.10
28.86 29.20 29.54 29.88 30.22 30.55
29.20 29.56 29.92 30.28 30.64 31.01
29.53 29.92 30.30 30.68 31.07 31.45

48. 29.86 30.27 30.68 31.08 31.49 31.90
30.19 30.62 31.05 31.48 31.91 32.34
30.52 30.97 31.43 31.88 32.33 32.79
30.85 31.32 31.80 32.27 32.75 33.23
31.17 31.67 32.17 32.67 33.16 33.66
31.49 32.01 32.54 33.06 33.58 34.10
31.81 32.36 32.90 33.44 33.99 34.53
32.13 32.70 33.27 33.83 34.40 34.96
32.45 33.04 33.63 34.22 34.80 35.39
32.77 33.38 33.99 34.60 35.21 35.82
33.08 33.72 34.35 34.98 35.61 36.24
33.40 34.05 34.70 35.36 36.01 36.67
33.71 34.38 35.06 35.74 36.41 37.09
34.02 34.72 35.41 36.11 36.81 37.50
34.33 35.05 35.76 36.48 37.20 37.92
34.64 35.37 36.11 36.85 37.59 38.33
34.94 35.70 36.46 37.22 37.99 38.75
35.24 36.03 36.81 37.59 38.37 39.16
35.55 36.35 37.15 37.96 38.76 39.56
35.85 36.67 37.50 38.32 39.15 39.97
36.15 36.99 37.84 38.68 39.53 40.37
36.45 37.31 38.18 39.04 39.91 40.78
36.74 37.63 38.52 39.40 40.29 41.18
37.04 37.95 38.85 39.76 40.67 41.57
37.33 38.26 39.19 40.11 41.04 41.97
37.62 38.57 39.52 40.47 41.42 42.36
37.91 38.88 39.85 40.82 41.79 42.75
38.20 39.19 40.18 41.17 42.16 43.14
38.49 39.50 40.51 41.52 42.52 43.53
38.78 39.81 40.83 41.86 42.89 43.92
39.06 40.11 41.16 42.21 43.26 44.30
39.35 40.41 41.48 42.55 43.62 44.69
39.63 40.72 41.80 42.89 43.98 45.07
39.91 41.02 42.12 43.23 44.34 45.44
40.19 41.32 42.44 43.57 44.69 45.82
40.47 41.61 42.76 43.90 45.05 46.20
40.74 41.91 43.07 44.24 45.40 46.57
41.02 42.20 43.39 44.57 45.75 46.94
41.29 42.50 43.70 44.90 46.10 47.31
41.57 42.79 44.01 45.23 46.45 47.68
41.84 43.08 44.32 45.56 46.80 48.04
42.11 43.37 44.63 45.88 47.14 48.40
42.37 43.65 44.93 46.21 47.49 48.77
42.64 43.94 45.24 46.53 47.83 49.13

49. <<<back Airflow due to temperature difference (CIBSE A4-6)
Enter
40
A1
A3
0.036 m2
m2
Area of to
Area of to
A1 A3 0.080
ti
31
to
18
A2
A4
0.036 m2
m2
Area of bo
Area of bo
0.070
A2 A4 ha
Cd
1.50 m
0.61 f
mean heig
Discharge
22
m3/s
0.054
Th
Tl
to
40 deg C
deg C
deg C
Temperatu
Temperatu
Outside am
Qb displaced air is 22
18
at outlet
A1
A3
m3
/s
0.017
0.03
7
kW
0.448
0.99
5
1.44
3
13
24.5
0.07825
ti - to
(ti + to) / 2
Ab

50. p opening p opening
ttom opening ttom
opening
ht diff between openings
co-efficient (typ 0.61)
re at high level re at low
level
bient temperature

51. <<< Back
75 65 59 53 50 47 45 43
63 125 Octave Band Mid-Frequency (Hz)
250 500 1k
2k 4k 8k
Octave Band SPL 75 65 59 53 50 47 45 43
"A" Weighting -26 -16 -9 -3 0 1 1 -1 dB(A)
"A" Corrected 49 49 50 50 50 48 46 42
Antilog Lp/10 79432.82347 79432.82347 100000 100000 100000 63095.73445 39810.71706 15848.93192
Total 10 log: 577621.03
"A" Weighted SPL 58