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Thermofluids Feb2022. Need to know the workings for Question
4.
QUESTION 4 In a food processing industry, hot water and cold water are mixed in a mixing chamber to produce a continuous supply of warm water. Hot water with a specific enthalpy of 420 kJ/kg and cold water with a specific enthalpy of 105 kJ/kg are mixed in the mixing chamber to produce 3.5 kg/s of warm water with a specific enthalpy of 293 kJ/kg. Assuming no heat is lost to its surroundings and the change in potential energy and kinetic energy are negligible. Determine: (a) mass flow rate of hot water; and (15 marks) (b) mass flow rate of cold water. (5 marks)