Thermodynamics Essay Example | Topics and Well Written Essays - 2000 words - 1

Thermodynamics - Essay Example break (W) is made of electrical work (We,in), paddle-wheel work (Wpw,in), and boundary work (Wb) and for a piston cylinder setup with insulation, Q zeroes out (since there would be no heat enthral between the system and its surroundings).Hot exhaust gases of an internal combustion engine are to be use to produce saturated water vapour at 2 MPa pressure. The exhaust gases enter the heat exchanger at 400C at a rate of 32 kg/min term water enters at 15C. The heat exchanger is not well insulated, and it is estimated that 10% of heat addicted up by the exhaust gases is lost to the surroundings. If the mass return rate of the exhaust is 15 quantify that of water, determineAn air-conditioning system involves the mixing of cold air and warm outdoor air before the variety show is routed to the conditioned room in steady operation. Cold air enters the mixing chamber at 5C and 105 kPa at a rate of 1.25 m3/s while warm air enters at 34C and 105 kPa. The air leaves the room at 24C. The ratio of the mass flow rates of the hot to cold air streams is 1.6. Using variable specific heats,