A completely insulated mixing vessel is designed to deliver water at 60 ⁰C and atmospheric pressure at a rate of 4 kg/s by mixing two streams of incoming water in an environment at 25 ⁰C. Saturated steam at atmospheric pressure is inserted on the hot side. Two options are being considered for the cold side: (a) chilled water from the plant at 3 ⁰C or (b) water from the tap at 20 ⁰C (both at atmospheric pressure). 1. Determine the thermal efficiency of each process

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