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

Thermodynamics - Essay Example constitute (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 transfer between the system and its surroundings). luscious take gases of an internal combustion engine are to be used to produce saturated water vapour at 2 MPa pressure. The exhaust gases pull in the heat exchanger at 400C at a rate of 32 kg/min while water enters at 15C. The heat exchanger is not well insulated, and it is estimated that 10% of heat given up by the exhaust gases is lost to the surroundings. If the mass flow rate of the exhaust is 15 times that of water, determineAn air-conditioning system involves the mixing of unheated air and quick outdoor air before the mixture 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 a ir 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,