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need help with an engineering thermodynamics question, re: a refridgeration cycle, can som

need help with an engineering thermodynamics question, re: a refridgeration cycle, can som

Hi, I need help with an engineering thermodynamics question, re: a refridgeration cycle, can someone help me?
Here's the question:
1. You are asked to design a residential air conditioning system that employs R-22 as therefrigerant. A schematic representation of the cycle is illustrated in the figure below. Effectivehumidity control dictates that the temperature in the evaporator cannot exceed . Thecondenser is to be located in the courtyard of the house where the air can be as hot as . Sizeconstraints in the heat exchanger, which compromise its operation, require that there be at least atemperature difference between the refrigerant within the condenser and the outdoor air.Given these constraints, you are asked to specify the refrigerant pressures for the evaporator andcondenser that will maximize the system’s COP. Clearly list all assumptions taken in your analysis and perform the following:a) Indicate the state points of the cycle on a T-s diagram. (Note: follow the state point numberingscheme utilized in the figure below.)b) Specify the refrigerant pressures for the evaporator and condenser in bars (integer values only).c) Calculate the COP of the air conditioning system. Assume that the compressor is isentropic andthat saturated liquid exits the condenser.

Rosa Parks 10-Nov-2017

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