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A carnot heat pump is to be used to heat a house and maintain it at 25C in the winter. On a day when the average outdoor temp remains at about 2C , the house is estimated to lose heat at a rate 55000 kj/h. If the heat pump consumes 6.6 kW of power while operating , determine (a) how long the heat pump ran that day; (b) the total heating cost ,assuming an average price of 8.5 cents /kWh for eletricity; and (c) the heating cost for the same day if resistance heating is used instead of of a heat pump.
a frictionless piston-cylinder is filled with 3 liters of water at 250 kpa. initially the temperature of the water is
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a passive solar house requires an average heating power of 8.4 kw in the winter. it stores energy in 10 tonnes 10000kg
The role of IFRS in both developing and developed capital markets.
at a production facility 1.2 in thick 2 ft x 2 ft square brass plates denisty532.5 lbmft3 and cp 0.091 btulbmf that are
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How do you the bubble point temperature and Vapor mole fractions at the bubble-point for a mixture at 690kPa that is 10.0mol % ethylene, 40.0 mol % ethane, and 50.0 mole % propane. Use the Depriester chart.
a gas is contained ina vertical, frictionless piston cylinder device.the piston has a mass of 4kg and a crossectional area of 35cm^2. a compressed spring is above the piston exerts a force of 60N on the piston .if the atmospheric pressure is 95kpa..
a househusband is steaming beef for his family in a pan with a surface area of 23.544 cm2 that is covered with i a 50 g
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