4. Outside air enters the inlet of a HVAC system at a dry air flow rate of 0.3 kg/s and a temperature of 29 °C and a rel

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4 Outside Air Enters The Inlet Of A Hvac System At A Dry Air Flow Rate Of 0 3 Kg S And A Temperature Of 29 C And A Rel 1 (263.93 KiB) Viewed 57 times

4. Outside air enters the inlet of a HVAC system at a dry air flow rate of 0.3 kg/s and a temperature of 29 °C and a relative humidity (0) of 58%. The air leaves the heat exchanger at a temperature of 15 °C and a relative humidity (0) of 100%. Assume that the air pressure is equal to 1.01325 bar. (a) Determine the heat transfer rate from the air as it moves across the heat exchanger. (do hand calculations for 01 and 2 and show your work) (b) Determine the hourly flow rate of water condensed from the air (show your work). (c) Use to attached psychrometric chart to estimate 01, 02, hị and h2. Show your work. You can assume Cp,air = 1.005 kJ/kg/K. Pu 0.622 -P-Pv T (°C) PSAT (bar) 29 0.04008 15 0.01705 hair (kJ/kg) hg (kJ/kg) h (kJ/kg) 58% 302.2 2554.5 100% 288.15 2525.9 62.99 Pg Qdot,out=? MAIR = 0.3 kg/s 0 = 0.58 T = 29 °C mair = 0.3 kg/ 0 = 1.00 T = 15 °C MWATER = ?, T = 15 °C