A phosphate solution [sp. gr. = 1.3, Cp = 0.757 BTU/(lbm. °R), μgc = 2.9 lbm/(ft.hr), kf = 0.3 BTU/(hr.ft.°R)] is used in the production of fertilizer. The solution is to be cooled from 150°F to 140°F using well water, available at 55°F. The phosphate solution flows at a rate of 7000 lbm/hr and has a dirt factor of 0.001 hr ft. °R/BTU. Select an appropriate exchanger and analyze it completely.

2a

It is a Thermodynamics subject please show the complete and step by step solution.

Q) Air conditioning system supplies two rooms required deferent conditions. Room 1 is to be minted at 16 C° dry bu temperature and 75% saturation, by supplying air at 13 C°, whereas room 2 is to be minted at 25 C° and 45% saturation supplying air at the same moisture content as required for room one. There is a commune extract duct the ratio of fre outdoor air to rooms recirculated air be (0.2). Then the mixed air stream passes through a cooled coil which has a cont factor 0.9, then supplying to the rooms through separates heater coil. Determine: a- The mass flow rate of supplying air each room. b- Plot the psychometric chart. c- Obtain the cooler load. d- Obtain the load of each heater. Let the outdc condition is 42 C° dry bulb temperature & 25 % RH. [Room 1 (Qs=5.2 kW, Q=1.3 kW) Room 2 (Qs=4.2 kW, QL=2.8 kW