3. In a hot water heating system, water heated to 95°C and then is pumped at the rate of 4 L/min through a radiator where it is cooled to 35°C. If the water arrives at the radiator at a temperature of 85°C, how much heat in kJ does the radiator release each hour?

3. In a hot water heating system, water heated to 95°C and then is pumped at the rate of 4 L/min through a radiator where it is cooled to 35°C. If the water arrives at the radiator at a temperature of 85°C, how much heat in kJ does the radiator release each hour?

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 30RQ: A gas is compressed inside a compressor's cylinder. When the piston is at its bottom dead center,...

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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

3. In a hot water heating system, water heated to
95°C and then is pumped at the rate of 4 L/min
through a radiator where it is cooled to 35°C. If
the water arives at the radiator at a
temperature of 85°C, how much heat in kJ does
the radiator release each hour?

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