A space has a sensible heating load of 60,000 W. The space is to be maintained at 21°C DB while the outdoor air is at 1°C DB and 20% RH. On coil air at 15°C is heated, humidified at the rate of 8 g/s, and supplied to the space at 31°C DB and 25% RH. Determine: a. The total amount of air supplied to the space; b. The amount of outdoor air supplied to the space; C. The relative humidity of the space. 3 Plot the process on a Psychrometric chart.

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

On a average work day more than work place firs are reorted

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]