J1V5 Internal Heat Loads

Internal heat loads refer to the amount of heat generated within a building or a specific space due to various internal sources. Table S45C3d provide assumptions for occupancy, lighting, cooking and appliances, which are then used against the applicable schedule.

Table S45C3d with internal heat loads for lighting, cooking, and appliances

Sole-occupancy unit area (excluding garage) (m2)Occupancy (m2/person)Daytime lighting power density (6:00 am to 6:00 pm) (W/m2)Night-time lighting power density (6:00 pm to 6:00 am) (W/m2)Cooking in kitchen zone only (W/m2 kitchen area)Appliances (except oven) in whole sole-occupancy unit (W/m2)

≤ 100

41.2

4.0

4.0

36.2

4.38

> 100 to ≤ 125

44.3

4.0

4.0

34.7

3.52

> 125 to ≤ 150

47.8

4.0

4.0

28.9

2.99

> 150 to ≤ 175

51.7

4.0

4.0

24.8

2.60

> 175 to ≤ 200

55.8

4.0

4.0

25.3

2.26

> 200 to ≤ 225

60.0

4.0

4.0

22.5

2.02

> 225 to ≤ 250

64.4

4.0

4.0

20.2

1.84

> 250 to ≤ 275

68.9

4.0

4.0

18.4

1.68

> 275 to ≤ 300

73.3

4.0

4.0

16.9

1.55

> 300 to ≤ 325

77.5

4.0

4.0

15.6

1.44

> 325 to ≤ 350

81.6

4.0

4.0

14.5

1.34

> 350 to ≤ 375

85.4

4.0

4.0

13.5

1.26

> 375

89.0

4.0

4.0

12.7

1.19

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