Energy, Exergy, and Environment Performance Evaluation of Cascade Refrigeration System with Natural Refrigerants

Meltem Koşan

Makale detayları

Energy, Exergy, and Environment Performance Evaluation of Cascade Refrigeration System with Natural Refrigerants

Yazarlar:

Meltem Koşan

Yayıncı:

Hitit University

Ana Başlıklar:

Engineering

Dergi:

Hittite Journal of Science and Engineering Vol.10 Issue 3, pp.243-248

Belge Tipi:

Makale

Yayın Tarihi:

9/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001300057

pISSN:

2148-4171

Anahtar kelimeler:

Özet:

 Cascade refrigeration systems are preferred in applications where low temperature cooling is required, such as in some special industrial and laboratory applications. Since, in these systems, the energy consumed by the compressors is less and the compressor outlet temperature is lower. Due to environmental problems, the use of natural refrigerants in cascade refrigeration systems has become to be of great importance. In this study, two cascade systems consisting of R744R290 System 1 and R1270R290 System 2 natural refrigerant pairs were designed and thermodynamically examined. In the analyzes performed according to different evaporator temperatures, the highest COP value was 3.66 at -20 evaporating temperature was obtained in the cascade system consisting of the R1270R290 refrigerant pair. Moreover, it was considered that there was a 17.95 enhancement in exergy efficiency with the use of R1270 refrigerant in the low temperature cycle. By the rise in the evaporator temperature, energy consumption decreases and as a result, the amount of carbon dioxide emissions reduced was attained.

 Cascade refrigeration systems are preferred in applications where low temperature cooling is required, such as in some special industrial and laboratory applications. Since, in these systems, the energy consumed by the compressors is less and the compressor outlet temperature is lower. Due to environmental problems, the use of natural refrigerants in cascade refrigeration systems has become to be of great importance. In this study, two cascade systems consisting of R744R290 System 1 and R1270R290 System 2 natural refrigerant pairs were designed and thermodynamically examined. In the analyzes performed according to different evaporator temperatures, the highest COP value was 3.66 at -20 evaporating temperature was obtained in the cascade system consisting of the R1270R290 refrigerant pair. Moreover, it was considered that there was a 17.95 enhancement in exergy efficiency with the use of R1270 refrigerant in the low temperature cycle. By the rise in the evaporator temperature, energy consumption decreases and as a result, the amount of carbon dioxide emissions reduced was attained.

 Cascade refrigeration systems are preferred in applications where low temperature cooling is required, such as in some special industrial and laboratory applications. Since, in these systems, the energy consumed by the compressors is less and the compressor outlet temperature is lower. Due to environmental problems, the use of natural refrigerants in cascade refrigeration systems has become to be of great importance. In this study, two cascade systems consisting of R744R290 System 1 and R1270R290 System 2 natural refrigerant pairs were designed and thermodynamically examined. In the analyzes performed according to different evaporator temperatures, the highest COP value was 3.66 at -20 evaporating temperature was obtained in the cascade system consisting of the R1270R290 refrigerant pair. Moreover, it was considered that there was a 17.95 enhancement in exergy efficiency with the use of R1270 refrigerant in the low temperature cycle. By the rise in the evaporator temperature, energy consumption decreases and as a result, the amount of carbon dioxide emissions reduced was attained.

 Cascade refrigeration systems are preferred in applications where low temperature cooling is required, such as in some special industrial and laboratory applications. Since, in these systems, the energy consumed by the compressors is less and the compressor outlet temperature is lower. Due to environmental problems, the use of natural refrigerants in cascade refrigeration systems has become to be of great importance. In this study, two cascade systems consisting of R744R290 System 1 and R1270R290 System 2 natural refrigerant pairs were designed and thermodynamically examined. In the analyzes performed according to different evaporator temperatures, the highest COP value was 3.66 at -20 evaporating temperature was obtained in the cascade system consisting of the R1270R290 refrigerant pair. Moreover, it was considered that there was a 17.95 enhancement in exergy efficiency with the use of R1270 refrigerant in the low temperature cycle. By the rise in the evaporator temperature, energy consumption decreases and as a result, the amount of carbon dioxide emissions reduced was attained.

Makale detayları

Energy, Exergy, and Environment Performance Evaluation of Cascade Refrigeration System with Natural Refrigerants

Yazarlar: Meltem Koşan

Yayıncı: Hitit University

Ana Başlıklar: Engineering

Dergi: Hittite Journal of Science and Engineering Vol.10 Issue 3, pp.243-248

Belge Tipi: Makale

Yayın Tarihi: 9/2023

Belge Dili: İngilizce

Document ID (Org No.): 2001300057

pISSN: 2148-4171

Cascade refrigeration system

R744

R1270

R290

COP

Sayı

Yazarlar:

Meltem Koşan

Yayıncı:

Hitit University

Ana Başlıklar:

Engineering

Dergi:

Hittite Journal of Science and Engineering Vol.10 Issue 3, pp.243-248

Belge Tipi:

Makale

Yayın Tarihi:

9/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001300057

pISSN:

2148-4171