In a hermetically sealed box at t1 ==50 C there is air with humidity a = 40%. A coil is inserted into the box, which can be cooled by a stream of water. How much water will condense on the coil if water at temperature t2 = 20°C is passed through it, and the box is maintained at 50°C? The pressures of saturating water vapor at temperatures t1 and t2 are equal to p1 = 92.5 mm rt. Art. and p2= 17.5 mm Hg. Art. Box volume 1 m3.

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