Chapter 8, Problem 8.77P

Steam at 5.2 MPa, 4000C expands in a Rankine turbine to 0.036MPa. For 136 kg/s of steam, determine the work, the thermal efficiency, and the steam rate (a) fot the cycle(b) for the turbine, (c) for an actual turbine with the same specifications, the brake steam rate is 4.80 kg/kwh ang the driven electric generator has an efficiency of 93%, Find brake thermal efficiency , brake engine efficiency, combined work, and quality or temperature of exhaust steam. Don't answer the given problem, just give me the schematic diagram and T-S diagram of the given problem

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P. 0.2 MP a 200 c lokw Разо три The device Shown in the figure May in Put or out to kw determine- P 300 C a iP(A) Assume asteady state, adiabatic device and that the working Substance is H₂o • Assume also the kinetic and Potential energies at outlet and inlet flow streams are negligible @ The Plow direction from 1 102 or 210 1 b) mas flow rate 2

A feedwater heater has 5 kg/s water at 5 MPa and 40°C flowing through it, being heated from two sources, as shown in Fig. 8.6. One source adds 900 kW from a 100°C reservoir, and the other source transfers heat from a 200°Creservoir such that thewater exit condition is 5 MPa, 180°C. Find the reversible work and the irreversibility.   KINDLY HELP WITH THIS QUESTION ,ON HOW ONE GET VALUES FROM STEAM TABLE FOR INLET AND EXIT STATE? Please let me know which steam table did you use and also indicate table number and tible of the table used ,lastly show all calculations.

Problem 4.01. A carnot refrigerator (carnot cycle heat pump in reverse) operating between Th and Te is used to cool and freeze a bottle of water, volume V, at a temperature To < Th to freezing temperature T (known density Pw, heat capacity cw). (a) Find the work required to cool and freeze the water. (b) Find the change in entropy in the heat baths, and use it to place a limit on the change in entropy of the water (without calculating the entropy change in the water). The C.O.P. of a carnot refrigerator: KR= Qc = W Te Th-Te

9 In a constant temperature, transferred to the working fluid at 80F. What is the change of entropy of the working fluid, KJ/kg-K? closed system process, 120 BTU of heat is 10 1ne in -rease of certain is 141 KJ/ka when the gas

An air conditioner using refrigerant 134a as work fluid It is used to keep the temperature of a room at 23 ° C by giving heat to the environment. The house from the walls and heat gain from windows is 250 kJ / min ; 900 W of heat from computer, TV and lamps to the room spreads. The refrigerant is 100 L / min in the form of saturated vapor at 400 kPa pressure to the compressor entering with flow and it left from the compressor 1200 kPa pressure and 70 ° C. a) real COP value b) max COP value c) Calculate the min volumetric flow rate for the refrigerant can have for the same compressor inlet and outlet conditions

A refrigerator (COP = 2.5) is used to maintain a lab temperature at 24° C for that 60 MJ of heat is absorbed. Then its work input would be?

Carnot machine operates between a hot reservoir at 200°C and a cold reservoir at 20°C. When operated as an engine it receives 1000 kJ/kg, find the work output in kJ/kg.