Additional Instructions: Define each enthalpy obtained from tables and chart and draw the p-hdiagram labeling the respective evaporating and condensing pressures andtemperatures in each problem.(2) A standard vapor compression system produces 20 tonsof refrigeration using R-12 as a refrigerant while operatingbetween a condenser temperature of 41.6 C and an evaporatortemperature of -25°C. Determine (a) the refrigerating effect inkJ/kg, (b) the circulating rate in kg/s, (c) the power supplied,(d) the COP, (e) the heat rejected in kW, and (f the volume flowrate in L/s.Ans. (a) 100.26 kJ/kg, (b) 0.7022 kg/s, (c) 25.69 kW,(d) 2.74, (e) 96.09 kW, (f) 92.18 L/s

Answered: Image /qna-images/answer/615937b5-1733-422c-9b40-2a6872b2a127.jpg

Answered: (2) A standard vapor compression system…

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

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2. A refrigeration system using R-12 is to have a refrigerating capacity of 60 kW. The evaporating temperature is 10°C and the condensing temperature is 42°C. Determine (a) the volume flow rate of refrigerant at inlet to the compressor, (b) the power required by the compressor, and (c) the fraction of vapor mixture at entrance to the evaporator expressed both on a mass basis and volume basis.
Can you also show the plot on the chart provided? The mass flow rate of the refrigerant in a Single Stage Vapor Compression (SSVC) refrigeration system is 0.015 kg/s and the evaporating and condensing temperatures shall be -20°C and 50°C, respectively. Determine the following: (1) cooling capacity in tons, (2) work of compressor in kW, (3) COP of the system, (4) EER of the system, and (5) refrigerating efficiency. Can you also show the plot on the chart provided?
Parts d,e and f
1. An ideal vapor-compression refrigeration cycle that uses refrigerant-134a as its working fluid maintains a condenser at 800 kPa and the evaporator at -12°C. Determine this system's COP and the amount of power required to service a 150 kW cooling load. Answers: 4.87, 30.8 kW
Can you also show the T-s and P-h diagrams? A Single Stage Vapor Compression (SSVC) refrigeration system has a cooling capacity of 6 tons. The discharge of the evaporator is at -20°C & 0.1 MPa and the discharge of the condenser is at 30°C & 1.0 MPa. Determine the following: (a) the COP of the system, (b) the Energy Efficiency Ratio in kJ/hr/W, (c) the HP/ton of the system, (d) the Refrigerating Efficiency of the system.
42. Refrigerant-12 enters the condenser of a vapor-compression refrigera- tion system at 175 psia and 140°F and leaves as saturated liquid at 120°F. Mass flow rate of the refrigerant is 4.8 lbm/min. The heat is rejected to the surrounding air, which is at 90°F. Determine: (a) Heat rejection rate, Btu/hr. 22 (b) Separate the overall entropy changes per hour (Freon and sur- roundings). 23/
Question 3 In a vapour-compression refrigeration system, refrigerant - 134a enters the compressor superheated at 200 kPa and - 5 °C. The refrigerant enters the condenser at 1.4 MPa and 75 °C, and exits at 1.4 MPa as a saturated liquid. There is no significant heat transfer between the compressor and its surroundings, and the refrigerant passes through the evaporator with a negligible change in pressure. If the refrigerating capacity is 105 kW, represent the cycle on a T-s diagram and determine: a) the mass flow rate of the refrigerant in kg/s, b) the power input to the compressor in kW, c) the coefficient of performance, and (2) d) the isentropic compressor efficiency
Can you show also the T-S diagram and P-h diagram A Single Stage Vapor Compression (SSVC) refrigeration system has a cooling capacity of 6 tons. The discharge of the evaporator is at -20°C & 0.1 MPa and the discharge of the condenser is at 30°C & 1.0 MPa. Determine the following: (a) the COP of the system, (b) the Energy Efficiency Ratio in kJ/hr/W
A chiller runs on R-410a as the working fluid. It operates with a condensing temperature of 45 C and an evaporating temperature of 0 C. It is determined to develop 85 kW of refrigeration. Calculate the following: (a)refrigerating effect, (b)flow rate of refrigeration, (c)power required by compressor, (d)coefficient of performance, (e)power per kilowatt of refrigeration, (f)theoretical horsepower input of the compressor
Determine the cooling capacity and the coefficient of performance of the air conditioning system?
Refrigerant 22 is the working fluid in a Carnot vapor refrigeration cycle for which the evaporator temperature is -30°C. Saturated vapor enters the condenser at 36°C, and saturated liquid exits at the same temperature. The mass flow rate of refrigerant is 10 kg/min. Determine the power input to the compressor, in kW, (A) 6.72 (B) 5.35 7.76 3.51 D
Please help!!!! Refrigerant 22 enters the compressor of an ideal vapor-compression refrigeration system as saturated vapor at -30°C with a volumetric flow rate of 10 m3/min. The refrigerant leaves the condenser at 19°C, 9 bar. Determine: (a) the magnitude of the compressor power, in kW. (b) the refrigerating capacity, in tons. (c) the coefficient of performance. (d) the rate of entropy production for the cycle, in kW/K. Answer for part (a): 52 kW Answer for part (b): 59 tons Answer for part (c): 3.98 Please answer part also d! That's the part I also need. Thank you!

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