PROBLEM 1 A 10 m³ rigid tank contains R-134a at 200 kPa and 20°C. Heat is added to the tank until the pressure reaches 240 kPa. How much heat has been added? What is the final temperature of the refrigerant?

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Q: So the initial pressure is 0.8Mpa?

A: Initial condition of refrigerant R134a, V1=0.05 m3, T1=32oCFinal pressure of R134a, P2=0.4 MPa

Q: A high-pressure hot water system has a total volume of 3m³. Calculate the expansion volume that…

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Q: Determine the type of steam, given: Temperature: 156°C Internal Energy: 1550 kJ/kg O Wet Vapor

A: For first question Given data, T = Temperature of the steam = 156 oC u = Internal energy = 1550…

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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.