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A steady stream of R-22 at ambient temperature, 10°C, and at 750 kPa enters a solar collector. The stream exits at 80°C, 700 kPa. Calculate the change in availability of the R-22 between these two states.

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Inlet (T,P)  (liquid): hi = 56.46 kJ/kg, si = 0.2173 kJ/kg K

Exit (T,P)  (sup. vap.): he = 305.91 kJ/kg, se = 1.0761 kJ/kg K


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