Consider a vapor absorption refrigeration system, using LiBr-Water as working fluid, with a unit capacity of 75 TR, as shown in the figure. The temperature of evaporation of 5C, the temperature of condensation of 40C same as the temperature of absorption. The generator exit temperature is 100C. Assume the points 5, 7 to be saturated and points 2, 3 to be at equilibrium. Calculate the following: (a) 1-the mass flow rates of the refrigerant, weak and strong solutions. (b) 2- the concentration of strong and weak solution. If the solution heat exchanger effectiveness is 85 %. (c) 3- The temperature and enthalpy at the inlet of the generator (point 3), (d) 4- the COP of this setup. State points T (C) P (kPa) x (%) h (kJ/kg) I 2 3 4 5 Condenser Generator Refrigerant vapor Weak solution M E Strong solution [ M-m 6 7 Evaporator Absorber 8 Qa 9 10