Consider the figure and calculate the coefficient of performance using two different refrigerants (your choice of refrigerants) other than HFC-134a. Point 3 must be a saturated vapor whose temperature is 40% below the critical temperature and the point 1 must be a saturated liquid whose temperature is 20% below the critical temperature. Use the NIST program : https://webbook.nist.gov/chemistryame-ser

(b) (b)