Question

An industrial cleaner uses a jet of high speed steam to clean surfaces at a food processing facility. The cleaner generates steam at 10 bar and 200 °C, which is fed through a wellinsulated valve at 0.50 kg/s, exiting the valve at a pressure of 1.0 bar. You may neglect changes in kinetic energy. a. Is the outlet stream a mixture of water vapor and liquid water, or is it pure vapor? To answer this question, assume that the outlet is a vapor liquid mixture, and perform an energy balance to check whether or not you get a reasonable answer for the fraction of the outlet stream that is vapor. Explain your reasoning. b. What is the temperature of the outlet stream?

Answer 1

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