R-134a refrigerant in a piston-cylinder assembly 0.1 m3 240 kPa and 40 ° C by volume are available. The piston held fixed by the pin and the masses on it and atmospheric The pressure created by the pressure is 280 kPa. Pressure in the cylinder to 280 kPa it is heated in constant volume until it is raised. And then cooling by pulling the pin With the process, heat is removed with a slow process. If the temperature reached after this process is 50 ° C Find the interactions of heat and work during these two processes.

Q: the containment room. Find the minimum room volume so that the final pressure does not exceed

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Q: Thermodynamics problem. Saturated water occupies a volume of 1.2m3 . Heat is added until it…

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Q: An oxygen tank has a volume of 4 cubic meters and is at 20 degrees C and 700 kPa. The valve is…

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Q: Consider a conventional piston-cylinder system. Compute the work required to compress air to 0.2 m3…

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Q: 2.7kg of water vapor at 500K and 100Pa is brought to a quality of 0.8 through an isothermal process.…

A: m = 2.7 kg water vaporP1 = 100 Pa = 0.1 kPaT1 = 500 K = 500 - 273 = 227 oCx2 = 0.8T1 = T2To find:…

Q: Two rigid tanks are filled with water. Tank A is 0.2 m' at 200 kPa, 150 °C and tank B is 0.3 m at…

A: Given that, Volume of tank A is, VA=0.2 m3Pressure in tank A is, PA=200 kPa,Temerature in tank A is,…

Q: A box shaped close system with a movable top contain water as working as fluid was kept a…

A: Here work done is given by W=P∆VW=P(Vfs-Vf)Here at T=293K and P=100 kPaSpecific volume=Vf=10-3…

Q: 3kg of Co2 expanded in a stationary piston cylinder through a polytropic process from 30 degree…

A: T1= 30+273= 303K, m=3kgP1=250KPa, P2=100KPan=1.45T2T1= 1002501.45-11.45=228.014KTotal Work, W=…

Q: A piston - cylinder system is filled with air. Initially, the air is at 489 kPa and 26\deg C. The…

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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.