Question

4. Frozen food is partially cooked at high pressure, then is cooled rapidly before freezing for storage and shipment. A commercial food processor must accomplish this cooling as a continuous process. Here, 300 kg/h of steam from the cooking operation leaves the cooking process at 450°C, 3 MPa. A compressed water source (20°C, 1.5 MPa) is available to reduce the steam to saturated vapor at 1.6 MPa. The cool water will be sprayed into the cooking steam to achieve the final product. How much compressed 20°C water must be used in this process?

Answer 1

Solution > Satu Jated Vapors M=? m = 300 kgho h = 3344 Kulung B = 1.6 MPa h = 2793-82 KT) NA T = 450c =3MP me=? Tz=20°c h=85-33KI =1:5 MPa - D Material Balance Me + my = na mg = 300 Kako + min Energy Balance mihy + Maha = inghe Saat ini sering + m x 85838* = (+ m) le 295 1003200 kg + 85.33 ing = 838146 kg +2793.82 mg 2708.49 m2 = 165054 Kales chswer im = 60-94 kg/ha Approx

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