Q: Air in a rigid 1 m3 box is at 300 K, 200 kPa. It is heated to 600 K by heat transfer from a reversible
Air in a rigid 1 m3 box is at 300 K, 200 kPa. It is heated to 600 K by heat transfer from a reversible heat pump that receives energy from the ambient at 300 K besides the work input. Use constant specific heat at 300 K. Since the coefficient of performance changes write dQ = mair Cv dT and find dW. Incorporate dW with temperature to find the required heat pump work.
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QH BWQHQLTHT mair PVRT 200 x 1 0287 300 2322 ... View full answer

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