question archive 150 grams of water at 75"C is heated at constant pressure
150 grams of water at 75"C is heated at constant pressure
Subject:Mechanical EngineeringPrice: Bought3
150 grams of water at 75"C is heated at constant pressure. The water is completely vaporized, what is the heat added? a. 2321.37 KJ C. 3214.23 KJ b. 4231.34 KJ d. 348.21 KJ A Rankine cycle has an initial mass of liquid flowing at 10 kg at 75"C. If final enthalpy is 379.6 KJ, find the change of the system. a. 655.75 KJ C. 763.45 KJ b. 834.34 KJ d. 934.56 KJ In an ideal reheat cycle, the steam throttled condition is 8 Mpa and 480"C. The steam is then reheated to 2 Mpa and 460"C. If turbine exhaust is 60"C, determine cycle efficiency. a. 38.3% C. 34.4% b. 24.3% d. 45.2% Steam is delivered to turbine at 5.4 Mpa and 600"C. Before condensation at 31"C, steam is extracted for feedwater heating at 0.6 Mpa. For an ideal regenerative cycle, find the thermal efficiency. a. 23.45% C. 28.34% b. 34.34% d. 44.14% A steam condenser receives 10 kg's of steam with an enthalpy of 2570 KJ/kg. steam condenses into a liquid and leaves with an enthalpy of 160 KJ/kg. Cooling water, passes through the condenser with temperature increases from 13 degrees C to 24 degrees C. Calculate the water flow in kg/s. a. 533 C. 523 b. 518 d. 528
