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

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.

A novel low-temperature absorption–compression cascade refrigeration system

2015 ◽  
Vol 75 ◽  
pp. 504-512 ◽  
Author(s):  
Yingjie Xu ◽  
FuSheng Chen ◽  
Qin Wang ◽  
Xiaohong Han ◽  
Dahong Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Refrigeration System ◽  
Cascade Refrigeration System ◽  
Cascade Refrigeration

Thermodynamic analysis of a power cycle using a low-temperature source and a binary NH3–H2O mixture as working fluid

2010 ◽  
Vol 49 (1) ◽  
pp. 48-58 ◽  
Author(s):  
Philippe Roy ◽  
Martin Désilets ◽  
Nicolas Galanis ◽  
Hakim Nesreddine ◽  
Emmanuel Cayer
Keyword(s):  
Low Temperature ◽  
Thermodynamic Analysis ◽  
Working Fluid ◽  
Power Cycle

Energy and Exergy Analysis of Cascade Refrigeration System Using MC22 and MC134 on HTC, R404A and R502 on LTC

2021 ◽  
Vol 80 (1) ◽  
pp. 73-83
Author(s):  
Hendri ◽  
Roswati Nurhasanah ◽  
Prayudi ◽  
Suhengki
Keyword(s):  
Low Temperature ◽  
Exergy Analysis ◽  
Refrigeration System ◽  
Low Temperature Storage ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Cascade Refrigeration System ◽  
Cascade Refrigeration ◽  
Better Than ◽  
Temperature Storage

Low temperature storage with a single refrigeration system only stable up to 228 K temperature. The purpose of this study is to develop a low temperature cool storage with cascade refrigeration system, with hydrocarbon refrigerants in terms of energy and exergy analysis. Experimental research in laboratories using refrigerant hydrocarbon MC22 and MC134 on the hight temperature circuit, and R404A and R502 using on low temperature circuit. Condenser heat exchanger using a type of exchanger plate. Resulting from this research, obtained that result the MC22/R404A, MC22/R502 and MC134/R404A refrigerant pair can reach a temperature of 220 K. The MC22/R404A refrigerant pair has god performance, COP, total loss exergy, and exergy efficiency is better than MC22/R502, and MC134/R04A refrigerant pairs.

Innovative technologies for energy production from low temperature heat sources: critical literature review and thermodynamic analysis.

2021 ◽  
Author(s):  
Doriano Brogioli ◽  
Fabio LaMantia
Keyword(s):  
Low Temperature ◽  
Literature Review ◽  
Thermodynamic Analysis ◽  
Carbon Footprint ◽  
Energy Production ◽  
Scientific Community ◽  
Heat Sources ◽  
Innovative Methods ◽  
Temperature Heat ◽  
Critical Literature

The scientific community has taken on the challenge to develop innovative methods to exploit low-temperature (<100°C) heat sources, having a large potential to decrease the carbon footprint. In this review,...

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