Consider a Carnot cycle executed in a closed system with 0.8 kg of air. The temperature limits of the cycle are 300 and 1100 K, and theminimum and maximum pressures that occur during the cycle are 20 and 3000 kPa. Assuming constant specific heats, determine thenet work output per cycle. The properties of air at room temperature are cp=1.005 kJ/kg-K, cv=0.718 kJ/kg-K, R= 0.287 kJ/kg-K, and k= 1.4The net work output per cycle iskJ.

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Answered: Consider a Carnot cycle executed in a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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es Consider a Carnot cycle executed in a closed system with 1 kg of air. The temperature limits of the cycle are 300 and 1100 K, and the minimum and maximum pressures that occur during the cycle are 20 and 3000 kPa. Assuming constant specific heats, determine the net work output per cycle. The properties of air at room temperature are cp=1.005 kJ/kg-K, cv=0.718 kJ/kg-K, R= 0.287 kJ/kg-K, and k = 1.4 The net work output per cycle is kJ.
What is the Carnot cycle?
Find the entropy production and determine if the cycle operates irreverisbly, reverisbly, or impossibly. A refrigeration cycle operates between the freezer compartment at 268K and the ambient air at 295K. The rate of heat transfer from the freezer compartment is 8000 kJ/h and the power input for the cycle is 3200 kJ/h. Determine the entropy production for this cycle in kJ/K·h (do not convert h to s). Enter the answer without units, but with a minus sign if applicable. This cycle operates irreversibly reversibly impossibly.
An ammonia vapor refrigeration cycle operates at an evaporator temperature of -16°C and a condensing temperature of 32°C. Determine the coefficient of performance for wet compression with superheated vapor leaving the compressor. The quality of vapor entering the compressor is 0.975 and the specific entropy of the superheated vapor discharging from the compressor is 5.7 kJ/kg-K.
Consider a Carnot cycle executed in a closed system with 0.5kg of air. The temperature limits of the cycle are 350K and 1250K, and the minimum and maximum pressures that occur during the process are 20 and 3500 kPa. Assuming constant specific heats, determine the net work output per cycle.
The turbine and compressor are adiabatic. Determine for this cycle, whether it is Perpetual Motion Machine and its kind?
A steam power plant develops a power output of 2840Kw. Te enthalpy of steam at the inlet if 2500 KJ/kg at500C and at the outlet is as follows: T=200C, dryness factor, x=0.8, hf2=561 KJ/kg and hfg2=1832 K/kg.Calculate the mass flow rate of the steam in kg/sec.
A Carnot engine contains 2.00 mol of neon gas as its working substance. It operates with a hotreservoir temperature of 500 °C: Using a heat input of 500 J, the engine lifts a 15.0 kg weight 2.00 m per cycle.(a) Draw a PV-diagram for this cycle. Determine the temperature and pressure of the gas at the end of eachstep of the Carnot cycle. (b) Determine the temperature of the cold reservoir. (c) For each step, determine Q,W, and AU. (d) How much heat energy does this engine waste per cycle? (e) Calculate the efficiency of theengine using n=-W/Qy and using n=1-Td/TH. Compare the two values. lowest pressure achieved in the engine is 1 bar.
Consider a variation of the Carnot cycle in a closed system with 10 kg of pure water operating. ranging between temperatures of 130 C and 350 ◦C. State 1 is a saturated liquid. Process 1-2 is a isothermal expansion with a supply of QH = 10 MJ. Process 2-3 is an adiabatic expansion with isentropic efficiency from 0.75 to minimum temperature. Process 3-4 is a compression isothermal, and the 4-1 process is a reversible adiabatic compression. Calculate: a. The pressure p2, the bonds x4 and x3, and the specific entropies s1 and s3; b. The work in each expansion and compression process; c. The heat rejected QL, the net work produced Wl i q and the yield η of the cycle; d. The entropy generated Sg in the cycle
A system of air refrigeration working between 1000 kPa and 100 kPa is needed to produce a cooling effect of 2000 kJ/min. The temperature of the air at the outlet cold component is 268 K and at outlet of the cooler component is 30 °C. Neglect losses in the compressor and expander. Determine: a. Mass of air circulated per min; b. Work of compression and expansion processes, and overall cycle work; c. C.O.P. and power in kW required.
1. Consider a Carnot cycle executed in a closed system with air as the working fluid. The maximum pressure in the cycle is 1300 kPa while the maximum temperature is 950 K. If the entropy increase during the isothermal heat rejection process is 0.25 kJ/kg-K and the network output is 100 kJ/kg, knowing that R= 0.287 kJ/kg.K and y= 1.4 determine the minimum temperature in the cycle: Oa) 520 K b) 530 K Oc) 630 K d) 4270 K e) None of above
95 kPa and 20°C. If the maximum temperature in the cycle is not to exceed 2200 K, determine (a) the thermal efficiency

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