Answer both the questions Feed water enters the boiler at a temperature of 30°C. It leaves the boiler as 85 % dry and enters thesuper heater where it is superheated to a temperature of 300°C. Determine the heat supplied per Kg ofsteam in the Boiler and in the super heater if the pressure is 1.5 N/mm2. From the super heater if the steamis led to a heat exchanger for process heating where it loses 88.7% of enthalpy, determine the conditionand related parameter of the steam at the exit point of heat exchanger Assume the specific heat of water as4.187 kJ/KgK and that of superheated steam as 2.25 kJ/KgK.Why do we need preheating of feed water and air in a boiler?

Answered: Image /qna-images/answer/3bfc39fb-fff2-4f66-bcfd-909e1f3071d0.jpg

Feed water enters the boiler at a temperature of 30°C. It leaves the boiler as 85 % dry and enters the super heater where it is superheated to a temperature of 300°C. Determine the heat supplied per Kg of steam in the Boiler and in the super heater if the pressure is 1.5 N/mm2. From the super heater if the ste is led to a heat exchanger for process heating where it loses 88.7% of enthalpy, determine the condition and related parameter of the steam at the exit point of heat exchanger Assume the specific heat of water 4.187 kJ/KgK and that of superheated steam as 2.25 kJ/KgK.

Feed water enters the boiler at a temperature of 30°C. It leaves the boiler as 85 % dry and enters the super heater where it is superheated to a temperature of 300°C. Determine the heat supplied per Kg of steam in the Boiler and in the super heater if the pressure is 1.5 N/mm2. From the super heater if the ste is led to a heat exchanger for process heating where it loses 88.7% of enthalpy, determine the condition and related parameter of the steam at the exit point of heat exchanger Assume the specific heat of water 4.187 kJ/KgK and that of superheated steam as 2.25 kJ/KgK.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter45: Domestic Refrigerators And Freezers

Section: Chapter Questions

Problem 13RQ: Condensers in these refrigerators are all_______cooled.

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