A 3-m 4-m 5-m room is to be heated by one ton (1000 kg) of

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A 3-m × 4-m × 5-m room is to be heated by one 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 6000 kJ/h. The room is initially at 20oC and 100 kPa and is maintained at an average temperature of 20oC 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 firstbrought into the room. Assume constant specific heats for both air and water at room temperature.
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Thermodynamics An Engineering Approach

ISBN: 978-0073398174

8th edition

Authors: Yunus A. Cengel, Michael A. Boles

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