A laboratory has a volume of 470 m3, and is to be maintained at 200C, 52.5% relative humidity. The air in the room is to be completely changed once every hour and is drawn from the atmosphere at 1.05 bar, 320C, 86% relative humidity, by a fan absorbing 0.45 kW. This air passes through a cooler which reduces its temperature and causes condensation, the condensate being drained off at 80C. The resulting saturated air is heated to room condition. The total pressure is constant through-out. Determine (a) the temperature of the air leaving the cooler, (b) the rate of condensation, (c) the heat transfer in the cooler, and (d) the heat transfer in the heater.
A laboratory has a volume of 470 m3, and is to be maintained at 200C, 52.5% relative humidity. The air in the room is to be completely changed once every hour and is drawn from the atmosphere at 1.05 bar, 320C, 86% relative humidity, by a fan absorbing 0.45 kW. This air passes through a cooler which reduces its temperature and causes condensation, the condensate being drained off at 80C. The resulting saturated air is heated to room condition. The total pressure is constant through-out. Determine (a) the temperature of the air leaving the cooler, (b) the rate of condensation, (c) the heat transfer in the cooler, and (d) the heat transfer in the heater.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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11. A laboratory has a volume of 470 m3, and is to be maintained at 200C, 52.5% relative humidity. The air in the room is to be completely changed once every hour and is drawn from the atmosphere at 1.05 bar, 320C, 86% relative humidity, by a fan absorbing 0.45 kW. This air passes through a cooler which reduces its temperature and causes condensation, the condensate being drained off at 80C. The resulting saturated air is heated to room condition. The total pressure is constant through-out. Determine (a) the temperature of the air leaving the cooler, (b) the rate of condensation, (c) the heat transfer in the cooler, and (d) the heat transfer in the heater. 16
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