closed system receives 175 kJ of energy by the work mode and 125 kJ by the heat mode. It is now required to return the system to its origina ate by an adiabatic process. hich of the following processes will do this?

Q: Use the adiabatic pressure vs. volume relation to find a change in pressure and the work done on a…

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Q: W НЕ

A: Given data: Q1˙=5 kW  T1=800 K Q2˙=10 kW T2=1000 K Rejecting heat at 600 K TL=600 K Determine The…

Q: A polytropic process (n = - 1) has initial state with P = 0 KPa, V = 0 m³ and final state with P=…

A: Given data: The index for polytropic process is n=-1 The initial pressure is P1=0 kPa The initial…

Q: A rigid container with volume of 200 L is divided by a partition resulting to two equal volumes A…

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Q: Calculate the boundary work for the cycle in kJ. Calculate the amount of heat transferred in each…

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Q: A nitrogen gas goes through a polytropic process with n = 1.3  in a piston cylinder. It starts out…

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Q: a 3 kW electric resistance heater in a room is turned on and kept on for 55 min. the amount of…

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Q: One kilogram of steam in a cylinder receives 170 kJ of heat transfer while the pressure remains…

A: The mass of the steam in the cylinder is .The amount of heat added to the steam is The heat transfer…

Q: You are considering two heaters in your house which must provide 10kW of heating. You expect to run…

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Q: maximum COP of the machine b. The minimum power in watts required of the machine

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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.