Amixing chamber operating at steady state at 100 kpa receives a saturated liquid-vapor mixture of water at a first inlet at 0.8 kg/s and a quality of 0.9, steam enters at a second inlet at 2 kg/s and 200°c, and liquid water enters at a third inlet at 1.2 kg/s and 95°c. all h2o leaves through a single exit at 100 kpa. unfortunately, the insulation fell off part of the mixing chamber, so heat is lost from the chamber at a rate of 60 kw. a. determine the mass flow rate of the stream leaving. b. determine the temperature of the stream leaving. c. draw the four state points on a t-v diagram. d. draw the four state points on a p-v diagram. e. determine the temperature of the stream leaving if the insulation is fixed.

Acommercial grade cubical freezer, 4 m on a side, has a composite wall consisting of an exterior sheet of 5.0-mm thick plain carbon steel (kst= 60.5 w/m k), an intermediate layer of 100-mm thick polyurethane insulation (kins 0.02 w/m k), and an inner sheet of 5.0- mm thick aluminium alloy (kal polyurethane insulation and both metallic sheets are each characterized by a thermal contact resistance of r 2.5 x 104 m2 k/w. (a) what is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 25°c and -5°c, respectively? (b) for power saving purpose, which wall material should be increased/reduced in. thickness in order to reduce 50% of the cooling load found in part (a)? redesign the thickness of the proposed material. 177 w/m-k). adhesive interfaces between the q=575.93 w