Deck 32: Heat Load Calculations

Question 1

The U factor is the amount of heat transferred through 1 sq yard of structure for each degree temperature difference between the inside and outside surfaces.

Answer 1

False

Question 2

A side of a house measures 10 feet by 15 feet. There is one window which measures 3 feet by 4 feet. The wall is a wood frame with siding and 3 1/2 inch insulation + 1 inch polystyrene sheathing (R-16). The window is single pane plus storm window. Find the heat load for the window for a 70° F design temperature difference.

Answer 2

720 Btu/h

Question 3

A side of a house measures 10 feet by 15 feet. There is one window which measures 3 feet by 4 feet. The wall is a wood frame with siding and 3 1/2 inch insulation + 1 inch polystyrene sheathing (R-16). The window is single pane plus storm window. Find the heat load for the wall (excluding the window) for a 70° F design temperature difference.

Answer 3

483 Btu/h

Question 4

A corner office measures 10 feet by 12 feet 6 inches with an 10-foot ceiling. The two outside walls are brick with 3 1/2 inches of insulation. There are no windows in the walls. The ceiling has 9 1/2 inches of insulation beneath a vented roof. The floor is a slab floor sitting on the ground. What is the heat load for the walls for a design temperature difference of 75°F?

Question 5

A corner office measures 10 feet by 12 feet 6 inches with an 10-foot ceiling. The two outside walls are brick with 3 1/2 inches of insulation. The ceiling has 9 1/2 inches of insulation beneath a vented roof. The floor is a slab floor sitting on the ground. It is desired to put a 4-foot by 3-foot double pane window in each of the two outside walls of the office. What is the heat load for this office by adding the two windows for a design temperature difference of 75°F?

Question 6

A side of a house measures 10 feet by 15 feet. There is one window which measures 3 feet by 4 feet. The wall is a wood frame with siding and 3 1/2 inch insulation + 1 inch polystyrene sheathing (R-16). The window is single pane plus storm window. Find the heat load for the entire side of the house for a 70° F design temperature difference.

Question 7

A corner office measures 10 feet by 12 feet 6 inches with an 10-foot ceiling. The two outside walls are brick with 3 1/2 inches of insulation. There are no windows in the walls. The ceiling has 9 1/2 inches of insulation beneath a vented roof. The floor is a slab floor sitting on the ground. What is the heat load for this office for a design temperature difference of 75°F?

Question 8

A corner office measures 10 feet by 12 feet 6 inches with an 10-foot ceiling. The two outside walls are brick with 3 1/2 inches of insulation. There are no windows in the walls. The ceiling has 9 1/2 inches of insulation beneath a vented roof. The floor is a slab floor sitting on the ground. What is the heat load for the ceiling for a design temperature difference of 75°F?

Question 9

A corner office measures 10 feet by 12 feet 6 inches with an 10-foot ceiling. The two outside walls are brick with 3 1/2 inches of insulation. The ceiling has 9 1/2 inches of insulation beneath a vented roof. The floor is a slab floor sitting on the ground. It is desired to put a 4-foot by 3-foot double pane window in each of the two outside walls of the office. What is the heat load for the two windows for a design temperature difference of 75°F?

Question 10

The units for the heat transfer multiplier are British thermal units per hour per square foot or Btu/h sq ft.