A piston-cylinder assembly contains 10 kg of refrigerant 134a. Initially, 8 kg of SA134a is in the liquid phase and the temperature is -10 oC. Then there is a slow heat transfer to SA-134a,the piston rises wwwn. www ww and touches the piston stops when the volume is 400 liters. a) Statusshow the variation in the P-V diagram. b) Calculate the temperature of the system when the piston touches the stoppers. www www c) Calculate the work done during the process.

Q: Patm=101kPa; g=9.81m/s² A substance is contained in a piston cylinder assembly with properties as…

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Q: Air fills a 2-m-diameter balloon at 20°C and 5 kPa gage. Additional air is forced into the balloon…

A: Given: Diameter of balloon, D1=2 m Temperature, T=20°C Pressure, P =5 kPa

Q: In a closed container with a fixed volume of 0.5 m3, initially there is a pressure of 200 kPa and a…

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Q: Water Boundary A well-inbulated rigid tank having a volume of 0 25 m contains saturated water vapor…

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Q: 3-76 A system consisting of 2 kg of ammonia undergoes a cycle composed of the following processes:…

A: given that , process 1-2; constant volume from P1=10bar ,x1=0.6 to saturated vapor process 2-3;…

Q: Water at 150 kPa and 4 kg of saturated liquid vapor mixture is in a piston-cylinder assembly. 3 kg…

A: Steam in general can exits different phases as subcooled liquid, saturated liquid, saturated wet…

Q: n a piston-cylinder arrangement, an initial temperature of 250 °C and 1.4 MPa pressure contains 4 kg…

A: The initial temperature is 250°C The pressure is 1.4 MPa The mass of vapor is mv=4 kg The final mass…

Q: While the pressure remains constant at 700 kPa the volume of the system of hydrogen changes from 0.6…

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Q: 2. 1 mole of an ideal gas initially at 300K and 1 atm is heated and allowed to expand re- versibly…

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Q: A 2.2 m x 0.98 m x 4.0 cm thick solid wood door has a 0.5 m square window. The window has two panes…

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Q: |A certain gas with Cp = 2.215 and R = 0.518 kg K 5. expand from kg K 0.142 m3 and 300 °K to…

A: Given data: V1=0.142 m3T1=300 KV2=0.425 m3P=106.869 kPa Need to determine the value of T2,m,∆h,∆U.

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.