This document summarizes the HVAC system design for an office building with 6,472 square meters of floor area located in London. It provides details on the building specifications, calculated cooling and heating loads, and peak load results. The peak cooling load is 514,743 Watts in July at 2:00 PM, while the peak heating load is 238,349 Watts. The document also includes load summaries for 10 individual spaces within the building.

1. Summary
Location and Weather
Project HVAC BUILDING SYSYTEM
Address
Calculation Time 4 February 2016 14:43
Report Type Standard
Latitude 51.50°
Longitude -0.13°
Summer Dry Bulb 31 °C
Summer Wet Bulb 19 °C
Winter Dry Bulb 0 °C
Mean Daily Range 12 °C
Building Summary
Inputs
Building Type Office
Area (m²) 6,472
Volume (m³) 21,567.87
Calculated Results
Peak Cooling Total Load (W) 514,743
Peak Cooling Month and Hour July 14:00
Peak Cooling Sensible Load (W) 502,128
Peak Cooling Latent Load (W) 12,614
Maximum Cooling Capacity (W) 514,743
Peak Cooling Airflow (L/s) 37,545.1
Peak Heating Load (W) 238,349
Peak Heating Airflow (L/s) 12,344.4
Checksums
Cooling Load Density (W/m²) 79.53

2. Cooling Flow Density (L/(s·m²)) 5.80
Cooling Flow / Load (L/(s·kW)) 72.94
Cooling Area / Load (m²/kW) 12.57
Heating Load Density (W/m²) 36.83
Heating Flow Density (L/(s·m²)) 1.91
Zone Summary - Default
Inputs
Area (m²) 6,472
Volume (m³) 21,567.87
Cooling Setpoint 23 °C
Heating Setpoint 21 °C
Supply Air Temperature 12 °C
Number of People 227
Infiltration (L/s) 0.0
Air Volume Calculation Type VAV - Single Duct
Relative Humidity 46.00% (Calculated)
Psychrometrics
Psychrometric Message None
Cooling Coil Entering Dry-Bulb Temperature 23 °C
Cooling Coil Entering Wet-Bulb Temperature 16 °C
Cooling Coil Leaving Dry-Bulb Temperature 11 °C
Cooling Coil Leaving Wet-Bulb Temperature 11 °C
Mixed Air Dry-Bulb Temperature 23 °C
Calculated Results
Peak Cooling Load (W) 514,743
Peak Cooling Month and Hour July 14:00
Peak Cooling Sensible Load (W) 502,128
Peak Cooling Latent Load (W) 12,614
Peak Cooling Airflow (L/s) 37,545.1

3. Peak Heating Load (W) 238,349
Peak Heating Airflow (L/s) 12,344.4
Peak Ventilation Airflow (L/s) 0.0
Checksums
Cooling Load Density (W/m²) 79.53
Cooling Flow Density (L/(s·m²)) 5.80
Cooling Flow / Load (L/(s·kW)) 72.94
Cooling Area / Load (m²/kW) 12.57
Heating Load Density (W/m²) 36.83
Heating Flow Density (L/(s·m²)) 1.91
Ventilation Density (L/(s·m²)) 0.00
Ventilation / Person (L/s) 0.0
Components
Cooling Heating
Loads (W) Percentage of Total Loads (W) Percentage of Total
Wall 110 0.02% 363 0.15%
Window 66,229 12.87% 89,137 37.40%
Door 0 0.00% 0 0.00%
Roof 268,627 52.19% 148,848 62.45%
Skylight 0 0.00% 0 0.00%
Partition 0 0.00% 0 0.00%
Infiltration 0 0.00% 0 0.00%
Ventilation 0 0.00% 0 0.00%
Lighting 60,053 11.67%
Power 78,069 15.17%
People 26,912 5.23%
Plenum 0 0.00%
Fan Heat 14,743 2.86%
Reheat 0 0.00%
Total 514,743 100% 238,349 100%

4. Default Spaces
Space Name Area (m²) Volume (m³) Peak Cooling Load (W) Cooling Airflow (L/s) Peak Heating Load (W) Heating Airflow (L/s)
1 Space 1,050 4,200.00 38,933 2,910.7 16,162 837.0
2 Space 358 1,147.74 36,838 2,730.2 19,268 997.9
3 Space 397 1,272.00 38,314 2,770.0 20,814 1,078.0
4 Space 497 1,591.81 40,223 3,020.4 19,886 1,029.9
5 Space 497 1,592.06 40,226 3,020.6 19,888 1,030.0
6 Space 765 2,450.31 65,581 4,924.5 38,584 1,998.3
7 Space 450 1,443.35 40,182 3,017.3 18,552 960.8
8 Space 449 1,436.51 40,143 3,014.3 18,550 960.7
9 Space 449 1,436.51 40,146 3,014.6 18,552 960.8
10 Space 1,560 4,997.59 121,792 9,122.5 48,093 2,490.8
Space Summary - 1 Space
Inputs
Area (m²) 1,050
Volume (m³) 4,200.00
Wall Area (m²) 260
Roof Area (m²) 0
Door Area (m²) 0
Partition Area (m²) 0
Window Area (m²) 513
Skylight Area (m²) 0

5. Lighting Load (W) 11,302
Power Load (W) 14,693
Number of People 37
Sensible Heat Gain / Person (W) 73
Latent Heat Gain / Person (W) 59
Infiltration Airflow (L/s) 0.0
Space Type Office (inherited from building type)
Calculated Results
Peak Cooling Load (W) 38,933
Peak Cooling Month and Hour July 13:00
Peak Cooling Sensible Load (W) 36,887
Peak Cooling Latent Load (W) 2,046
Peak Cooling Airflow (L/s) 2,910.7
Peak Heating Load (W) 16,162
Peak Heating Airflow (L/s) 837.0
Components
Cooling Heating
Loads (W) Percentage of Total Loads (W) Percentage of Total
Wall 25 0.06% 65 0.40%
Window 13,241 34.01% 16,097 99.60%
Door 0 0.00% 0 0.00%
Roof 0 0.00% 0 0.00%
Skylight 0 0.00% 0 0.00%
Partition 0 0.00% 0 0.00%
Infiltration 0 0.00% 0 0.00%
Lighting 9,333 23.97%
Power 12,133 31.16%
People 4,201 10.79%
Plenum 0 0.00%
Total 38,933 100% 16,162 100%

6. Space Summary - 2 Space
Inputs
Area (m²) 358
Volume (m³) 1,147.74
Wall Area (m²) 152
Roof Area (m²) 358
Door Area (m²) 8
Partition Area (m²) 0
Window Area (m²) 150
Skylight Area (m²) 0
Lighting Load (W) 3,856
Power Load (W) 5,012
Number of People 13
Sensible Heat Gain / Person (W) 73
Latent Heat Gain / Person (W) 59
Infiltration Airflow (L/s) 0.0
Space Type Office (inherited from building type)
Calculated Results
Peak Cooling Load (W) 36,838
Peak Cooling Month and Hour July 15:00
Peak Cooling Sensible Load (W) 36,139
Peak Cooling Latent Load (W) 698
Peak Cooling Airflow (L/s) 2,730.2
Peak Heating Load (W) 19,268
Peak Heating Airflow (L/s) 997.9

7. Components
Cooling Heating
Loads (W) Percentage of Total Loads (W) Percentage of Total
Wall 14 0.04% 38 0.20%
Window 10,052 27.29% 9,410 48.84%
Door 0 0.00% 0 0.00%
Roof 17,536 47.60% 9,820 50.96%
Skylight 0 0.00% 0 0.00%
Partition 0 0.00% 0 0.00%
Infiltration 0 0.00% 0 0.00%
Lighting 3,358 9.11%
Power 4,365 11.85%
People 1,513 4.11%
Plenum 0 0.00%
Total 36,838 100% 19,268 100%
Space Summary - 3 Space
Inputs
Area (m²) 397
Volume (m³) 1,272.00
Wall Area (m²) 160
Roof Area (m²) 397
Door Area (m²) 8
Partition Area (m²) 0
Window Area (m²) 157
Skylight Area (m²) 0
Lighting Load (W) 4,273
Power Load (W) 5,555

8. Number of People 14
Sensible Heat Gain / Person (W) 73
Latent Heat Gain / Person (W) 59
Infiltration Airflow (L/s) 0.0
Space Type Office (inherited from building type)
Calculated Results
Peak Cooling Load (W) 38,314
Peak Cooling Month and Hour July 15:00
Peak Cooling Sensible Load (W) 37,541
Peak Cooling Latent Load (W) 774
Peak Cooling Airflow (L/s) 2,770.0
Peak Heating Load (W) 20,814
Peak Heating Airflow (L/s) 1,078.0
Components
Cooling Heating
Loads (W) Percentage of Total Loads (W) Percentage of Total
Wall 11 0.03% 41 0.20%
Window 8,632 22.53% 9,891 47.52%
Door 0 0.00% 0 0.00%
Roof 19,436 50.73% 10,883 52.29%
Skylight 0 0.00% 0 0.00%
Partition 0 0.00% 0 0.00%
Infiltration 0 0.00% 0 0.00%
Lighting 3,721 9.71%
Power 4,838 12.63%
People 1,677 4.38%
Plenum 0 0.00%
Total 38,314 100% 20,814 100%

9. Space Summary - 4 Space
Inputs
Area (m²) 497
Volume (m³) 1,591.81
Wall Area (m²) 100
Roof Area (m²) 499
Door Area (m²) 8
Partition Area (m²) 0
Window Area (m²) 115
Skylight Area (m²) 0
Lighting Load (W) 5,351
Power Load (W) 6,956
Number of People 18
Sensible Heat Gain / Person (W) 73
Latent Heat Gain / Person (W) 59
Infiltration Airflow (L/s) 0.0
Space Type Office (inherited from building type)
Calculated Results
Peak Cooling Load (W) 40,223
Peak Cooling Month and Hour July 14:00
Peak Cooling Sensible Load (W) 39,254
Peak Cooling Latent Load (W) 969
Peak Cooling Airflow (L/s) 3,020.4
Peak Heating Load (W) 19,886
Peak Heating Airflow (L/s) 1,029.9
Components
Cooling Heating
Loads (W) Percentage of Total Loads (W) Percentage of Total

10. Wall 5 0.01% 26 0.13%
Window 2,786 6.93% 6,188 31.12%
Door 0 0.00% 0 0.00%
Roof 24,674 61.34% 13,672 68.75%
Skylight 0 0.00% 0 0.00%
Partition 0 0.00% 0 0.00%
Infiltration 0 0.00% 0 0.00%
Lighting 4,644 11.54%
Power 6,037 15.01%
People 2,078 5.17%
Plenum 0 0.00%
Total 40,223 100% 19,886 100%
Space Summary - 5 Space
Inputs
Area (m²) 497
Volume (m³) 1,592.06
Wall Area (m²) 100
Roof Area (m²) 499
Door Area (m²) 8
Partition Area (m²) 0
Window Area (m²) 117
Skylight Area (m²) 0
Lighting Load (W) 5,352
Power Load (W) 6,957
Number of People 18
Sensible Heat Gain / Person (W) 73

11. Latent Heat Gain / Person (W) 59
Infiltration Airflow (L/s) 0.0
Space Type Office (inherited from building type)
Calculated Results
Peak Cooling Load (W) 40,226
Peak Cooling Month and Hour July 14:00
Peak Cooling Sensible Load (W) 39,257
Peak Cooling Latent Load (W) 969
Peak Cooling Airflow (L/s) 3,020.6
Peak Heating Load (W) 19,888
Peak Heating Airflow (L/s) 1,030.0
Components
Cooling Heating
Loads (W) Percentage of Total Loads (W) Percentage of Total
Wall 4 0.01% 25 0.13%
Window 2,788 6.93% 6,191 31.13%
Door 0 0.00% 0 0.00%
Roof 24,674 61.34% 13,672 68.75%
Skylight 0 0.00% 0 0.00%
Partition 0 0.00% 0 0.00%
Infiltration 0 0.00% 0 0.00%
Lighting 4,644 11.55%
Power 6,038 15.01%
People 2,078 5.17%
Plenum 0 0.00%
Total 40,226 100% 19,888 100%
Space Summary - 6 Space

12. Inputs
Area (m²) 765
Volume (m³) 2,450.31
Wall Area (m²) 284
Roof Area (m²) 764
Door Area (m²) 11
Partition Area (m²) 0
Window Area (m²) 328
Skylight Area (m²) 0
Lighting Load (W) 8,233
Power Load (W) 10,702
Number of People 27
Sensible Heat Gain / Person (W) 73
Latent Heat Gain / Person (W) 59
Infiltration Airflow (L/s) 0.0
Space Type Office (inherited from building type)
Calculated Results
Peak Cooling Load (W) 65,581
Peak Cooling Month and Hour July 14:00
Peak Cooling Sensible Load (W) 64,090
Peak Cooling Latent Load (W) 1,491
Peak Cooling Airflow (L/s) 4,924.5
Peak Heating Load (W) 38,584
Peak Heating Airflow (L/s) 1,998.3
Components
Cooling Heating
Loads (W) Percentage of Total Loads (W) Percentage of Total
Wall 16 0.02% 71 0.18%
Window 8,132 12.40% 17,566 45.53%

13. Door 0 0.00% 0 0.00%
Roof 37,803 57.64% 20,947 54.29%
Skylight 0 0.00% 0 0.00%
Partition 0 0.00% 0 0.00%
Infiltration 0 0.00% 0 0.00%
Lighting 7,144 10.89%
Power 9,288 14.16%
People 3,197 4.87%
Plenum 0 0.00%
Total 65,581 100% 38,584 100%
Space Summary - 7 Space
Inputs
Area (m²) 450
Volume (m³) 1,443.35
Wall Area (m²) 100
Roof Area (m²) 450
Door Area (m²) 8
Partition Area (m²) 0
Window Area (m²) 186
Skylight Area (m²) 0
Lighting Load (W) 4,848
Power Load (W) 6,302
Number of People 16
Sensible Heat Gain / Person (W) 73
Latent Heat Gain / Person (W) 59
Infiltration Airflow (L/s) 0.0

14. Space Type Office (inherited from building type)
Calculated Results
Peak Cooling Load (W) 40,182
Peak Cooling Month and Hour July 14:00
Peak Cooling Sensible Load (W) 39,305
Peak Cooling Latent Load (W) 878
Peak Cooling Airflow (L/s) 3,017.3
Peak Heating Load (W) 18,552
Peak Heating Airflow (L/s) 960.8
Components
Cooling Heating
Loads (W) Percentage of Total Loads (W) Percentage of Total
Wall 8 0.02% 25 0.13%
Window 6,375 15.86% 6,203 33.44%
Door 0 0.00% 0 0.00%
Roof 22,240 55.35% 12,324 66.43%
Skylight 0 0.00% 0 0.00%
Partition 0 0.00% 0 0.00%
Infiltration 0 0.00% 0 0.00%
Lighting 4,207 10.47%
Power 5,469 13.61%
People 1,882 4.68%
Plenum 0 0.00%
Total 40,182 100% 18,552 100%
Space Summary - 8 Space
Inputs

15. Area (m²) 449
Volume (m³) 1,436.51
Wall Area (m²) 100
Roof Area (m²) 450
Door Area (m²) 8
Partition Area (m²) 0
Window Area (m²) 115
Skylight Area (m²) 0
Lighting Load (W) 4,829
Power Load (W) 6,277
Number of People 16
Sensible Heat Gain / Person (W) 73
Latent Heat Gain / Person (W) 59
Infiltration Airflow (L/s) 0.0
Space Type Office (inherited from building type)
Calculated Results
Peak Cooling Load (W) 40,143
Peak Cooling Month and Hour July 14:00
Peak Cooling Sensible Load (W) 39,269
Peak Cooling Latent Load (W) 874
Peak Cooling Airflow (L/s) 3,014.3
Peak Heating Load (W) 18,550
Peak Heating Airflow (L/s) 960.7
Components
Cooling Heating
Loads (W) Percentage of Total Loads (W) Percentage of Total
Wall 9 0.02% 26 0.14%
Window 6,359 15.84% 6,188 33.36%
Door 0 0.00% 0 0.00%
Roof 22,263 55.46% 12,336 66.50%

16. Skylight 0 0.00% 0 0.00%
Partition 0 0.00% 0 0.00%
Infiltration 0 0.00% 0 0.00%
Lighting 4,190 10.44%
Power 5,448 13.57%
People 1,875 4.67%
Plenum 0 0.00%
Total 40,143 100% 18,550 100%
Space Summary - 9 Space
Inputs
Area (m²) 449
Volume (m³) 1,436.51
Wall Area (m²) 100
Roof Area (m²) 450
Door Area (m²) 8
Partition Area (m²) 0
Window Area (m²) 115
Skylight Area (m²) 0
Lighting Load (W) 4,829
Power Load (W) 6,277
Number of People 16
Sensible Heat Gain / Person (W) 73
Latent Heat Gain / Person (W) 59
Infiltration Airflow (L/s) 0.0
Space Type Office (inherited from building type)
Calculated Results

17. Peak Cooling Load (W) 40,146
Peak Cooling Month and Hour July 14:00
Peak Cooling Sensible Load (W) 39,271
Peak Cooling Latent Load (W) 874
Peak Cooling Airflow (L/s) 3,014.6
Peak Heating Load (W) 18,552
Peak Heating Airflow (L/s) 960.8
Components
Cooling Heating
Loads (W) Percentage of Total Loads (W) Percentage of Total
Wall 8 0.02% 25 0.13%
Window 6,362 15.85% 6,191 33.37%
Door 0 0.00% 0 0.00%
Roof 22,263 55.45% 12,336 66.49%
Skylight 0 0.00% 0 0.00%
Partition 0 0.00% 0 0.00%
Infiltration 0 0.00% 0 0.00%
Lighting 4,190 10.44%
Power 5,448 13.57%
People 1,875 4.67%
Plenum 0 0.00%
Total 40,146 100% 18,552 100%
Space Summary - 10 Space
Inputs
Area (m²) 1,560
Volume (m³) 4,997.59

18. Wall Area (m²) 84
Roof Area (m²) 1,563
Door Area (m²) 65
Partition Area (m²) 0
Window Area (m²) 401
Skylight Area (m²) 0
Lighting Load (W) 16,797
Power Load (W) 21,836
Number of People 55
Sensible Heat Gain / Person (W) 73
Latent Heat Gain / Person (W) 59
Infiltration Airflow (L/s) 0.0
Space Type Office (inherited from building type)
Calculated Results
Peak Cooling Load (W) 121,792
Peak Cooling Month and Hour July 15:00
Peak Cooling Sensible Load (W) 118,751
Peak Cooling Latent Load (W) 3,041
Peak Cooling Airflow (L/s) 9,122.5
Peak Heating Load (W) 48,093
Peak Heating Airflow (L/s) 2,490.8
Components
Cooling Heating
Loads (W) Percentage of Total Loads (W) Percentage of Total
Wall 10 0.01% 22 0.05%
Window 5,010 4.11% 5,212 10.84%
Door 0 0.00% 0 0.00%
Roof 76,539 62.84% 42,859 89.12%
Skylight 0 0.00% 0 0.00%
Partition 0 0.00% 0 0.00%

19. Infiltration 0 0.00% 0 0.00%
Lighting 14,627 12.01%
Power 19,015 15.61%
People 6,591 5.41%
Plenum 0 0.00%
Total 121,792 100% 48,093 100%