A 36-m room is to be heated by three ton(1 ton =1000 kg) of liquid water contained in a tank that is placed in the room. The room is losing heat to the outside at an average rate of 6700 kJ/h. The room is initially at 20 °C and 100 kPa and is maintained at an average temperature of 20 °C at all times. If the hot water is to meet the heating requirements of this room for a 24-h period, determine the minimum temperature of the water when it is first brought into the room in °C. Assume constant specific heats for both air and water at room temperature. Use Cpwater = 4180 J/kg.K and Cpair=1.005 J/kg.K %3D O 54.4 O 36.1 O 41.8 O 38.7 32.8

A 36-m room is to be heated by three ton(1 ton =1000 kg) of liquid water contained in a tank that is placed in the room. The room is losing heat to the outside at an average rate of 6700 kJ/h. The room is initially at 20 °C and 100 kPa and is maintained at an average temperature of 20 °C at all times. If the hot water is to meet the heating requirements of this room for a 24-h period, determine the minimum temperature of the water when it is first brought into the room in °C. Assume constant specific heats for both air and water at room temperature. Use Cpwater = 4180 J/kg.K and Cpair=1.005 J/kg.K %3D O 54.4 O 36.1 O 41.8 O 38.7 32.8

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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