FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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I've already found T2 and A2 for part A. They are T2 = 310.2K and A2 = .0139m^2. But I can't figure out how to find the rate of entropy production with units KW/K (that's what my questions seems to be asking for, but it may be a typo). All of the solutions for this problem here on Bartelby find the rate of entropy production with units KW / (K*kg).
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- Liquid water at 35 ºF is fed to a boiler operating at 10 bars and is converted at constant pressureto saturated steam. The steam is produced at a steady state flow rate of 600 lbm/hr. Assume thatthe kinetic energy of the liquid entering the boiler is negligible, and that the steam is dischargedfrom the boiler through a 1 ft pipe.a. Calculate ∆Ĥ (in units of Btu/lbm) for this process.b. Calculate the heat input (Btu/hr) to meet the needed saturated steam production rate.arrow_forwardExample 4-2:A rigid tank of 1 m contains nitrogen gas at 600 kPa, 400 K. By mistake someone lets 0.5 kg flow out. If the final temperature is 375 K what is then the final pressure?arrow_forwardWater is put into the boiler at 23oC and 10 bar pressure, where the water will turn into steam saturated at constant pressure. Find of the process and heat required for production 15000 m3 /h slightly under the above conditions. Assume that the velocity of water entering the pot is ignored and steam is known leaves the kettle through a tube with an inner diameter of 0.15 m. The inlet and outlet of the pipe has same heightarrow_forward
- Water at 50°C is cooled in a cooling tower which has an efficiency of 65%. The temperature of the surrounding air is 35°C dry bulb and 70% relative humidity. The heat dissipated from the condenser is 2,000,000kJ/hr. Find the capacity in liters per second of the pump used in the cooling tower.arrow_forwardThere are 100 kg/ min of water entering a heating element at 5 deg C and leaves at 40 deg C. Find the heat addedduring the process.arrow_forwardFind the quanity of heat required to produce 79% dry steam at 8000 kpa from feedwater at 50 degrees celcius ?.arrow_forward
- W A polytropic process of air from 150 psia, 300 deg F, and 1 ft³ occurs to a final pressure of 20 psia in accordance with pV1.3-C. Determinearrow_forwardCalculate the workdone, heat transfer and change in entropy. Do not need to solve. I just need the steps to solve it e.g equations etc.arrow_forwardPlease be very detailedarrow_forward
- 8: A small metallic object of 5 kg mass and at a temperature of is thrown in a tank of water at temperature. Calculate change in entropy of the universe.arrow_forwardAir is compressed from 120 kPa and 350 K to 1200 kPa and 750 K. a) Calculate the change in specific entropy As of the air using constant specific heat capacities at 550 K and equations based on cp, Cv, and the heat capacity ratio k. b) Calculate the change in specific entropy As of the air using equations and table values (A-17), which account for the changes in heat capacities with temperature. c) What will the temperature at the end of the compression process T2, be, if the pressure after compression is 1200 kPa, the compression process is isentropic, and you use constant specific heat capacities at 550 K and equations based on Cp, Cv, and the heat capacity ratio k. d) What will the temperature at the end of the compression process T2, be, if the pressure after compression is 1200 kPa, the compression process is isentropic, and you account for changes in heat capacities with temperature by using corresponding equations and table values? e) Calculate the deviation between the results…arrow_forward2. The gas expanding in the combustion space of a reciprocating engine has an initial pressure of SO bar and an initial temperature of 1623*C. The initial volume is 50000 mm' and the gas expands through a volume ratio of 20 according to the law pV constant. Calculate w and AU Take R= 270 J/Kg K and C, = 800 J/Kg K. Assume n 1.38arrow_forward
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