HW-36 A refrigeration engineer would like to assess the advantages and disadvantages of various refrigerants for the system design analyzed in HW-35. Three working fluids are considered: R-134a, a traditional refrigerant with adverse global warming impacts; propane, an environmentally friendly but flammable refrigerant, and carbon dioxide, an environmentally friendly refrigerant but with costly system components. Assume the same cooling capacity of 80 kW and compressor isentropic efficiency of 70% for all three working fluids. Data at various states in the cycle is provided in the tables below for propane and carbon dioxide. Homework-Week #14 Submit on Gradescope Propane ME 200-Thermodynamics I me200-Purdue Due by 11:59 p.m. EST on December 1, 2023 State P, kPa T, C h, kJ/kg 1 345.3 -10 459.06 2s 1000 32.1 508.78 2 1000 3 1000 26.9 165.87 4 345.3 -10 165.87 Carbon dioxide State P, kPa T, C h, kJ/kg 1 2648.7 -10 322.23 2s 7000 62.5 362.48 2 7000 3 7000 28.7 180.98 4 2648.7 -10 180.98 (a) Find the coefficient of performance of the refrigeration cycle with propane and carbon dioxide. (b) Determine the temperature at the compressor exit for all three refrigerants, in C. (c) Calculate the volumetric flow rate at the compressor inlet for all three refrigerants, in m/hr. (d) Will the carbon dioxide compressor be larger/smaller than R-134a compressor for the same crankshaft speed? Hint: Consider volumetric flow rate at the compressor inlet for the working fluid. (e) Which of the three working fluids would require specially designed, thus expensive, components assuming standard components are designed for pressures between 25 to 40 bar? (f) Is coefficient of performance the only aspect to consider when selecting a working fluid? Justify your answer.