Question

11:38 3 of 6 MEN 211 Natre Dame Univenity Mechanical Engineering Dep An air conditioning system is composed of a cooling pat and a ming pat shown in the ollowing fgure. The cooling losd is ensured by a retrigeration cycle opersting with retrigerant R. 134a Mod arst a pressure of 1 bar,atenperstue of35°C-are tive hundty ot 35 % ardo fow rate of 100 m3h is mbed with ar at 1 bar, 24°C.50% RH and S00 m3p, The mot e at state 3 enters the evaporator otthe retgerton system ond t is codedto 12"Cnd 100% RH (Saburated air) The condensed water has a tempersture of12c Ignoring he lossesto the environment, kinetic and potetal energy eects getemine b. The rate at which wet er condenses, inkg/s C. Drawthe air condtioning processes on psychrometric chat (tes1,2 and 4) d. The cooling capacity of the eveporator in kw e. The eledric power consumed by the compressor of the retigeration system if the coeficierาธิ of performance is equal to 22s t The mass tow rate of the retrigerant R4 34a towing in the retrigeration system if it leaves the evaporator as saturated vapor at 6C and t leaves the condenser as aturated iquid at38"C N.B: For moist air enthalpy, use h (uig da)-1.05t w513 188 ttinC and win lg Ang da. Air 12-C 100% RH C.35% RH 100 m3/h The Dib 24C.9%RH 500 m 3 MEN 211

Answer 1

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