(a) Sketch the cycle on a T-s diagram being sure to label the state pointsand indicate the relative location of the liquid-vapor dome.(b) Determine the efficiency of the cycle,(c) the quality at the end of the heat addition process, andthe quality at the end of the heat rejection process. Consider a Carnot heat engine cycle executed in a closed systemin the saturated liquid-vapor mixture region using 0.8 kg of R-134a as theworking fluid. The maximum and minimum temperatures in the cycle are60°C and 20°C, respectively. It is known that the refrigerant is saturatedliquid at the beginning of the heat addition process, and the net work outputfrom the cycle is 13.360 kJ.

Given that: The cycle is a Carnot cycle. Working fluid is R134a. Mass = 0.8 kg. Maximum temperature…

(a) Sketch the cycle on a 7-s diagram being sure to label the state points and indicate the relative location of the liquid-vapor dome. (b) Determine the efficiency of the cycle, (c) the quality at the end of the heat addition process, and the quality at the end of the heat rejection process.

(a) Sketch the cycle on a 7-s diagram being sure to label the state points and indicate the relative location of the liquid-vapor dome. (b) Determine the efficiency of the cycle, (c) the quality at the end of the heat addition process, and the quality at the end of the heat rejection process.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Consider a Carnot heat-pump cycle executed in a steady-flow system in the saturated liquid–vapor mixture region using refrigerant-134a flowing at a rate of 0.22 kg/s as the working fluid. It is known that the maximum absolute temperature in the cycle is 1.2 times the minimum absolute temperature, and the net power input to the cycle is 5 kW. If the refrigerant changes from saturated vapor to saturated liquid during the heat rejection process, determine the ratio of the maximum to minimum pressures in the cycle.
HFC-134a is the working fluid of a steady-flow Carnot refrigerator. The refrigerant enters the condenser as a saturated vapor at 70ºF. Heat absorption from the refrigerated space takes place at a temperature of 10ºF. Determine the coefficient of performance of the cycle.
A Carnot refrigeration cycle is executed in a closed system in the saturated liquid-vapor mixture region using 1 kg of refrigerant-134a as the working fluid. The maximum and the minimum temperatures in the cycle are 22C and -4C, respectively. If the refrigerant is saturated liquid at the end of the heat rejection process, and the net work input to the cycle is 16 kJ, determine: b) The pressure at the end of the heat rejection process. Should correct please. (Gpt/ai Answer not allowed)
Consider a Carnot heat-engine cycle executed in a closed system using 0.01 kg of refrigerant-134a as the working fluid. The cycle has a thermal efficiency of 15 percent, and therefrigerant-134a changes from saturated liquid to saturated vapor at 50°C during the heat addition process. Determine the net work output of this engine per cycle.
Refrigerant-134a is condensed in a refrigeration system by rejecting heat to ambient air at 25°C. R-134a enters the condenser at 700 kPa and 50°C at a rate of 0.05 kg/s and leaves at the same pressure as a saturated liquid. Determine the COP of this refrigeration cycle if the cooling load at these conditions is 6 kW.
A heat pump is installed in a building to heat the space to a constant 22 ⁰C when the outdoor temperature is 15 ⁰C. The heating requirement at these conditions is 30 kW. The system uses R-410a as a refrigerant and operates according to an ideal vapor compression cycle as shown in the figures below. The saturation temperature of the refrigerant in the indoor coil is typically 20 ⁰C higher than the desired space temperature, and the saturation temperature of the refrigerant in the outdoor unit is typically 20 ⁰C lower than the outdoor temperature. (one of those coils is the condenser, the other is the evaporator) Determine the states at points 1 through 4.
A real heat engine operating between two heat reservoirs, and produces 10 kW of power. The efficiency of the engine is 42%. The absorption from the high temperatures reservoir occurs at 500 kPa during which the working fluid (R-134A) transforms from a saturated liquid at the inlet, to a superheated vapor at 110 C and 500 kPa. What is the flow rate of refrigerant in this system?
Refrigerant-134a enters the compressor of a refrigerator at 0.14MPa and -10°C at a rate of 0.05 kg/s and leaves at 0.8 MPa and 50°C. The refrigerant is cooled in the condenser to 26°C and 0.72 MPa and is throttled to 0.15 MPa. Determine (a) the rate of heat removal from the refrigerated space and the power input to the compressor, (b) the isentropic efficiency of the compressor, and (c) the coefficient of performance of the refrigerator. Answers: (a) 7.93 kW, 2.02 kW, (b) 0.939, (c) 3.93
A refrigerator using fluid-134a as a work fluid is used to keep the cooling medium at -25 oC. The refrigerator releases the waste heat, which enters the condenser at 18 oC with a flow of 0.30 kg / s and from the condenser at 26 oC to the cooling water. The refrigerant enters the condensate at a pressure of 1.2 MPa and 50 oC, and leaves the condenser at 40 oC at the same pressure. Find a) the mass flow rate of the refrigerant, b) the power consumed by the compressor, c) the COP value, and d) the minimum power that the compressor will consume for the same cooling load.They watch the specific heat of water as ?? = 4.22 ?? / ???.
Consider an 80 MW coal-fired steam power plant that runs on a reheat Rankine cycle. Steam enters the high-pressure turbine at 10 MPa and 500°C and the low-pressure turbine at 1 MPa and 500°C. Steam leaves the condenser as a saturated liquid at 10 kPa. Determine the mass flow rate of steam from the boiler. in metric tons per hour
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.
What is cyclic Heat engine? What is the difference between refrigerator and heat Pump?