2. A group of twenty executives attend a board meeting in a room which measures 20 ft by 20 ft and has a 10 ft ceiling. Assume that each person occupies 2.5 ft and gives out about 375 Btu of heat per hour. Calculate the air temperature rise occurring within 15 min of the start of the conference if the room is completely sealed and insulated. Take c, for air as 0.1715 Btu/lbm°F.

2. A group of twenty executives attend a board meeting in a room which measures 20 ft by 20 ft and has a 10 ft ceiling. Assume that each person occupies 2.5 ft and gives out about 375 Btu of heat per hour. Calculate the air temperature rise occurring within 15 min of the start of the conference if the room is completely sealed and insulated. Take c, for air as 0.1715 Btu/lbm°F.

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

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 29RQ: If 3000 ft3 of air is crossing an evaporator coil and iscooled from 75F to 55F, what would be the...

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