Answered: A 0.3 m^3 rigid tank receives paddle…

A 0.3 m^3 rigid tank receives paddle work at a rate of 4.5 W for 30 minutes. Initially, the gas has a density of 1.6 kg/m^3. Find the change of specific internal energy in KJ/kg.

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 27RQ: How many Btu/h would be produced in a 12-kW electricheater?

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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.

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A 0.3 m^3 rigid tank receives paddle work at a rate of 4.5 W for 30 minutes. Initially, the gas has a density of 1.6 kg/m^3. Find the change of specific internal energy in KJ/kg.

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