Thermodynamic Analysis of a Two-Stage Cascade Refrigeration Cycle for Application to Venus Lander Payload Electronics Cooling

2018 ◽  
Author(s):  
Kevin R. Anderson ◽  
Thomas J. Gross ◽  
Christopher McNamara ◽  
Ariel Gatti
Keyword(s):  
Thermodynamic Analysis ◽  
Electronics Cooling ◽  
Refrigeration Cycle ◽  
Two Stage ◽  
Cascade Refrigeration

Thermodynamic Analysis of a Cascade Refrigeration Cycle for Venus Lander Electronics Cooling

2019 ◽  
Vol 33 (3) ◽  
pp. 762-772
Author(s):  
Kevin R. Anderson ◽  
Thomas J. Gross ◽  
Christopher McNamara ◽  
Ariel Gatti
Keyword(s):  
Thermodynamic Analysis ◽  
Electronics Cooling ◽  
Refrigeration Cycle ◽  
Cascade Refrigeration

scholarly journals A feasibility analysis of replacing the standard ammonia refrigeration device with the cascade NH3/CO2 refrigeration device in the food industry

2015 ◽  
Vol 19 (5) ◽  
pp. 1821-1833
Author(s):  
Dennis Jankovich ◽  
Kresimir Osman
Keyword(s):  
Thermodynamic Analysis ◽  
Food Industry ◽  
Reactive Power ◽  
Cost Effective ◽  
Refrigeration Cycle ◽  
Power Mean ◽  
Two Stage ◽  
Deep Freezing ◽  
Influential Parameters ◽  
Contaminated Area

The thermodynamic analysis demonstrates the feasibility of replacing the standard ammonia refrigeration device with the cascade NH3/CO2 refrigeration device in the food industry. The main reason for replacement is to reduce the total amount of ammonia in spaces like deep-freezing chambers, daily chambers, working rooms and technical passageways. An ammonia-contaminated area is hazardous to human health and the safety of food products. Therefore the preferred reduced amount of ammonia is accumulated in the Central Refrigeration Engine Room, where the cascade NH3/CO2 device is installed as well. Furthermore, the analysis discusses and compares two left Carnot?s refrigeration cycles, one for the standard ammonia device and the other for the cascade NH3/CO2 device. Both cycles are processes with two-stage compression and two-stage throttling. The thermodynamic analysis demonstrates that the selected refrigeration cycle is the most cost-effective process because it provides the best numerical values for the total refrigeration factor with respect to the observed refrigeration cycle. The chief analyzed influential parameters of the cascade device are: total refrigeration load, total reactive power, mean temperature of the heat exchanger, evaporating and condensing temperature of the low-temperature part.

Thermodynamic Analysis of a R32/CO2 Cascade Refrigeration Cycle

2013 ◽  
Vol 732-733 ◽  
pp. 527-530 ◽  
Author(s):  
Jian Xiao ◽  
Ying Fu Liu
Keyword(s):  
Low Temperature ◽  
Thermodynamic Analysis ◽  
Working Conditions ◽  
Temperature Difference ◽  
Refrigeration Cycle ◽  
Cascade Refrigeration

A R32/CO2 cascade refrigeration cycle was analyzed thermodynamically, the results show that: Under given working conditions, there exists the best condensing temperature of the low-temperature circuit to make the maximum COP of the cycle. The lower evaporating temperature is, the lower the best condensing temperature of the low-temperature circuit is. Under the same evaporating temperature, COP increases and mH/mL decreases along with condensing temperature decreasing, under the same condensing temperature, COP decreases and mH/mL increases along with condensing temperature decreasing. To reduce the temperature difference in the cascade-condenser can increase COP and decrease mH/mL.

Thermodynamic analysis of CO2 transcritical two-stage compression refrigeration cycle systems with expanders

2017 ◽  
Vol 24 (2) ◽  
pp. 70-77 ◽  
Author(s):  
Shengchun Liu ◽  
Zhili Sun ◽  
Hailong Li ◽  
Baomin Dai ◽  
Yong Chen
Keyword(s):  
Thermodynamic Analysis ◽  
Refrigeration Cycle ◽  
Two Stage ◽  
Cycle Systems

Thermodynamic analysis of auto-cascade refrigeration cycles, with and without ejector, for ultra low temperature freezing using a mixture of refrigerants R600a and R1150

2021 ◽  
pp. 117598
Author(s):  
Enrique Ángel Rodríguez-Jara ◽  
Francisco José Sánchez-de-la-Flor ◽  
José Antonio Expósito-Carrillo ◽  
José Manuel Salmerón-Lissén
Keyword(s):  
Low Temperature ◽  
Thermodynamic Analysis ◽  
Cascade Refrigeration
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