A boiler is being used to generate a superheated steam for use as a heating medium in a Pharmaceutical plant. Subcooled

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A Boiler Is Being Used To Generate A Superheated Steam For Use As A Heating Medium In A Pharmaceutical Plant Subcooled 1 (76.08 KiB) Viewed 14 times

A boiler is being used to generate a superheated steam for use as a heating medium in a Pharmaceutical plant. Subcooled or compressed liquid water at 33 °C and atmospheric pressure is being sent into the boiler for a final conversion to a superheated steam which is at 0.11 MPa and 157 °C. By strictly using the data given below, and assuming no heat loss, determine the change in entropy that will take place due to the conversion of the water from the subcooled liquid to the superheated vapor. [10 Marks] Data given: 0°C = 273.15 K Specific heat of liquid water is C = 72.43 +0.01039T – 1.497 x 10-652 Specific heat of water vapor is c= 32.24 +0.001924T + 1.055 x 10-5T2 – 3.596 x 10-993 Asvap @1 atm and 100 °C = 108.965138 J/molk R= 8.314 J/mol The specific heats are in units of J/molk