A spring-loaded piston-cylinder device contains 100 g of helium as the system, as shown in the figure. The system undergoes a process from 115 kPa and 0.8739 m3 to 550 kPa and 0.3832 m³. Determine the (a) work done, (b) heat transfer in this process. The properties of helium are R= 2.08 kJ/kg-K and cy= 3.16 kJ/kg-K. Also, determine the (c) initial temperature and (d) final temperature of helium. - Spring Helium The work done in this process is The heat transfer in this process is The initial temperature of helium is The final temperature of helium is |kJ. kJ. 1 °C. °C.

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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.