Ejector expansion refrigeration system: Ejector design and performance evaluation

2015 ◽  
Vol 58 ◽  
pp. 1-13 ◽  
Author(s):  
M. Hassanain ◽  
E. Elgendy ◽  
M. Fatouh
Keyword(s):  
Performance Evaluation ◽  
Refrigeration System ◽  
And Performance

Simulation and Performance Evaluation of Finned Tube Gas Cooler for Trans-Critical CO2 Refrigeration System

2013 ◽  
Vol 281 ◽  
pp. 324-328 ◽  
Author(s):  
Dileep Kumar Gupta ◽  
Mani Shankar Dasgupta
Keyword(s):  
Carbon Dioxide ◽  
Mathematical Model ◽  
Performance Evaluation ◽  
Cost Effective ◽  
Finned Tube ◽  
Refrigeration System ◽  
Air Velocity ◽  
Time Performance ◽  
And Performance

Carbon dioxide is one of the rediscovered sustainable options, as CFCs and HFCs are now in the list of regulated substances, to be phased out in time bound way. There are however various challenges to the successful use of CO2 as refrigerant. Cost effective and widely acceptable technology is demand of the time. Performance of trans-critical CO2 refrigeration systems is found to be sensitive to the gas cooler design. In the present work a detailed mathematical model is developed for a finned tube air cooled gas cooler and the same is validated using published literature. Subsequently, to achieve the lowest possible approach temperature, the performance of the gas cooler is analyzed for various air velocity and alternate pipe arrangements. The effect of increase in size of gas cooler to its performance is also studied.

scholarly journals Design and performance evaluation of solar-biogas powered hybrid vapour absorption refrigeration system operating with temperatures from solar and biogas flame heating

2019 ◽  
Vol 9 (1) ◽  
pp. 7278-7284
Keyword(s):  
Performance Evaluation ◽  
Solar Energy ◽  
Heat Source ◽  
Solar Panel ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Heating Source ◽  
Absorption Refrigeration System ◽  
And Performance ◽  
System Operating

This paper represents design and performance evaluation with experiments tests of solar-biogas powered hybrid vapour absorption refrigeration system. The system designed for 40 liter capacity with 0.05 TR for cooling Amonia- water mixtures. This refrigerator system was designed 140°C temperature for generator by heating source like solar energy and biogas flame. Biogas flame as heat source was produced more than 140°C temperature and COP of the system achieved 0.134 individually. When system whole day working with biogas flame. Solar energy which was used 4 to 5 hours daily when solar radiation was available. In this case when solar thermal as heat source was produced only 70°C temperature but in the case of solar panel direct current supply to heater, heater as a heat source was produced approximately 150°C temperature. In case hybrid powered when 18 hours using biogas flame as heat source and 4 to 6 hours hour solar energy in the form of solar panel DC supply, COP had achieved 0.1.

scholarly journals Design of Evaporator Coil and Performance Evaluation of Vapour Compression Refrigeration System with Three Layer Evaporator

2021 ◽  
Vol 9 (VI) ◽  
pp. 5130-5133
Author(s):  
Mandave Ganesh
Keyword(s):  
Performance Evaluation ◽  
Refrigeration System ◽  
Refrigerant Capacity ◽  
And Performance ◽  
Vapour Compression

The performance of a vapour compression refrigeration system with a three-layer zigzag evaporator is evaluated in this research. The primary goal of this study is to compare the performance of a household refrigerator with a capacity of 165 litres, R-12as refrigerant, and a three layer zigzag shaped evaporator to that of an existing system. The refrigerant capacity of this evaporator assembly is maximised.

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