hvac calculator for advanced level designers

8/10/2019 Hvac Calculator for advanced level designers

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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 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.


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1768

Dia.

Pa

Pa

Pa

ANSWER

2406 mm dia.


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ough opening

Pressure relief outlet

ough closed door


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Start Date: 22-Oct-01 Days freq. 1

Days long 13


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HEAT FLOW HEAT FLOWHORIZ. UP DOWN HORIZ. UP DOWN

Rsi 0.13 0.1 0.17 Rsi 0.13 0.1 0.17

Rso 0.04 0.04 0.04 Rso 0.04 0.04 0.04

Rsi+Rso 0.17 0.14 0.21 Rsi+Rso 0.17 0.14 0.21

R air gap 0.18 0.12 0.12 R air gap 0 0 0

R total 0.52 0.4 0.54 R total 0.34 0.28 0.42

L1 (m) 0.005 0.005 0.005 L1 (m) 0.005 0.005 0.005

K1 50 50 50 K1 50 50 50

L2 (m) 0.1 0.1 0.1 L2 (m) 0.1 0.1 0.1

K2 0.057 0.057 0.057 K2 0.057 0.057 0.057

L3 (m) 0.05 0.05 0.05 L3 (m) 0 0 0

K3 0.026 0.026 0.026 K3 1 1 1

L4 (m) 0.015 0.015 0.015 L4 (m) 0.015 0.015 0.015

K4 0.16 0.16 0.16 K4 0.16 0.16 0.16

N.B:- Enter 'k' from table below. N.B:- Enter 'k' from table below.

Where no material is used enter L=0 & K=1. Where no material is used enter L=0 & K=1.

U-value = U-value =

(W/m2o

C) (W/m2o

C)0.503 0.4860.243 0.248 0.244 0.495


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1

Airflow 3.62 m3/s

PROCESS ON PROCESS OFF

Sensible Cooling 42.3 kW

23 C (db) De-humidification 46.0 kW 14.8 C (db)

80 % rh Energy Change 89.2 kW 95 % rh

Water Removed 0.02035 litres/s

73.26797 kg/h

14.25 g/kg Moisture Content 9.51 g/k

0.8578 m3/kg Specific Volume 0.8278 m

3/k

59.472 kJ/kg Specific Enthalpy 38.329 kJ/k

17.81 g/kg Saturation Moisture Content 10.01 g/k

23.140 kJ/kg Specific Enthalpy Dry Air 14.080 kJ/k

28.08 Pa Saturation Vapour Pressure 15.98 Pa

HYGROMETRIC DATA (0oC to 45

oC)

HYGROMETRIC TABLES

DRY BULB RELATIVE MOISTURE SPECIFIC SPECIFIC SATURATED ENTHALPY SATURATED

TEMP. HUMIDITY CONTENT VOLUME ENTHALPY MOISTURE OF DRY AIR VAPOURoC. % kg/kg m

3/kg kJ/kg CONTENT, kg/kg kJ/kg 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


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nergy ange

m3/s

5.25

I nlet Condition Fan Cooling Outlet Condition

20 C (db) 14 C (db)

84 % rh 95 % rh

kW

-38.3 Sensible Cooling

0.01239 kg/kg Moisture Content -46.71 Latent Cooling 0.00951 kg/kg

0.84664 m3/kg Specific Volume 0.82554 m

3/kg

51.70450 kJ/kg Specific Enthalpy 38.32923 kJ/kg

0.01475 kg Specific Moisture Conteny -58.88 kg/h 0.01001 kg

20.11000 kJ/kg Enthalpy Dry air Water Removed 14.08000 kJ/kg

23.37000 Pa Saturated Vapour Pressure 15.98000 Pa

Moisture content At inlet 0.076830 kg

Moisture content At outlet 0.060475 kg

Moisture change -0.016355 kg

-58.88 kg/h

Sensible change -38.35 kWLatent change -46.71 kW

Total change -85 kW

####

####

-85

kW Total

HVAC Process


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HYGROMETRIC TABLES

Dry Bulb Moisture Specific Specific Saturated Enthalpy SATURATED

Temp. R.H. Content Volume Enthalpy Moisture of dry air VAPOURoC. % kg/kg m

3/kg kJ/kg Content kg kJ/kg 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 8.1295 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 29.83025 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


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Specific Enthalpy Volume Sp. Vol Air on Air off

kJ/kg kjJ/kg m3/s m

3/kg db % db % kW

20 54 1 0.883 10 50% 35 20% -38.505 1

20 30 1 0.847 10 50% 25 10% -11.806 2

116 76 1 0.871 40 60% 25 100% 45.924 3

79 39 1 0.839 45 20% 20 50% 47.676 4

79 65 1 0.877 45 20% 30 50% 15.964 5

56 44 1 0.866 42 10% 30 20% 13.857 644 56 1 0.866 30 20% 42 10% -13.857


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Back

BLACK MILD STEEL PIPE SIZES GALVANISED PIPES

FOR VARIOUS kW DUTIES. FOR HWS AND CWS SYSTEMS

Max. Equivalent Equivalent HWS

Diameter, Max. Water kW Rated Output Simultaneous Flow Rate Pressure Return Dia.

mm. Flow Rate, l/s. T=5oC

. T=10

oC

. T=15

oC

.Demand Units l/s. Drop, Pa. mm

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

150 36.0 750 1500 2250 TYPICAL PRACTICAL DEMAND UNITS

200 90.0 1850 3700 5500 Basin or Bidet ( Hot & Cold) 3 1.5 ea

Sink ( Hot & Cold) 15 7.5 each

NOTE Bath ( Hot & Cold) 20 10 each

1) For LPHW heating, typical T= 82oC - 71

oC = 11

oC. Shower ( Hot & Cold) 8 4 ea

2) For fan coil unit cooling, typical T= 12oC - 7

oC = 5

oC. WC (Cold only) 8 only


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JOB NO.

MODULE INTEGRITY LOCATION

TEST RESULTS DATE

TEST BYWITNESS

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


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m3

m3/h

m3/s)

m3/h

m3/h

m3/h

m3/h


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58 20.19 1419.81 35.67

59 27.27 1412.73 35.84

60 34.33 1405.67 36.01


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Accommodation Module

length 15 m

breadth 15 m

height 30.25 mSurface 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

1016 07 2484 93 815 25 2685 75

0102

030

0

5

10

15

20

25

30

35

40

45

50

1

5

9

13

17

2125 29

3337

4145

49

(To) Temp Outside

(Ti)Tempinside

Minutes


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Module heat Surplus Module hea Surplus Module heat Surplus

Loss Energy Loss Energy Loss Energy

kj kj kj kj kj kj

570.78 2930.22 366.93 3134.07 163.08 3337.92

585.41 2915.59 382.57 3118.43 179.74 3321.26

599.96 2901.04 398.14 3102.86 196.32 3304.68

614 44 2886 56 413 63 3087 37 212 82 3288 18

5357

61


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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 2872.61991.84 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 2746.101102.35 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


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Module heat Surplus Module hea Surplus Module heat Surplus

Loss Energy Loss Energy Loss Energy

kj kj kj kj kj 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


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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 3398.91468.17 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 3249.22601.74 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


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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 33.3231 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 35.8640 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


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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


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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 37.5034.33 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 41.1837.04 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


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opening opening

tom opening

tom opening

t diff between openings

o-efficient (typ 0.61)

e at high levele at low level

bient temperature


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hvac calculator for advanced level designers

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