b. The ceiling of a certain room in a student's dormitory has an area of 200 ft". It contains insulation such that its R-value is 30. If the room is maintained at 22°C and the attic has a temperature of 50°C. How many Joules of heat flows through the ceiling into the room in 1 day?

b. The ceiling of a certain room in a student's dormitory has an area of 200 ft". It contains insulation such that its R-value is 30. If the room is maintained at 22°C and the attic has a temperature of 50°C. How many Joules of heat flows through the ceiling into the room in 1 day?

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter42: Heat Gains And Heat Losses In Structures

Section: Chapter Questions

Problem 12RQ

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

b. The ceiling of a certain room in a student's dormitory has an area of 200 ft'. It
contains insulation such that its R-value is 30. If the room is maintained at 22°C
and the attic has a temperature of 50°C. How many Joules of heat flows through
the ceiling into the room in 1 day?

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