Performance evaluation of ejector based CO2 system for simultaneous heating and cooling application in an Indian dairy industry

被引：10
作者：
Dasi, Koti [1 ]
Singh, Simarpreet [1 ]
Guruchethan, A. M. [1 ]
Maiya, M. P. [1 ]
Hafner, Armin [2 ]
Banasiak, Krzysztof [3 ]
Neksa, Petter [2 ,3 ]
机构：
[1] Indian Inst Technol Madras, Madras, Tamil Nadu, India
[2] Norwegian Univ Sci & Technol, Trondheim, Norway
[3] SINTEF Energy Res, Trondheim, Norway
来源：
THERMAL SCIENCE AND ENGINEERING PROGRESS | 2020年 / 20卷
关键词：
Trans-critical; Internal heat exchanger; Pasteurization; Exergy analysis; Pressure optimization; REFRIGERATION CYCLE; CARBON-DIOXIDE; OPTIMIZATION; PUMP;
D O I：
10.1016/j.tsep.2020.100626
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
India is ranked first in milk production, and its goal is to increase annual production to 300 million tons by 2024. The dairy industry requires multi-temperature cooling and simultaneous heating. In the present study, the ejector based transcritical CO2 system with two evaporators (LT at -10 degrees C, MT at 0 degrees C) is analyzed and proposed for fulfilling both cooling and heating demands in the dairy industry. Ejector based systems with and without internal heat exchanger are analyzed and compared. The effects of gas cooler outlet temperature, receiver pressure and gas cooler pressure on the performance of the system are investigated by energy and exergy analysis. The gas cooler pressure is analyzed for achieving the desired pasteurization temperature. The internal heat exchanger not only reduces the minimum gas cooler pressure required for the pasteurization temperature but also increases the system COP and exergy efficiency by 6.4% and 4.5% respectively. Second law analysis shows that the maximum exergy efficiency of the system is 38.4%.
引用
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页数：10
相关论文
共 19 条
[1]   Analysis of CO2 based refrigeration systems with and without ejector for simultaneous pasteurization and chilling of milk [J].
Ahammed, Md Ezaz ;
Bhattacharyya, Souvik ;
Ramgopal, M. .
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2018, 95 :61-72
[2]  
Chen J, 2007, PROC IEEE 12 INT C W, V33, P230, DOI DOI 10.1007/s11270-007-9372-6
[3]   Particular characteristics of transcritical CO2 refrigeration cycle with an ejector [J].
Deng, Jian-qiang ;
Jiang, Pei-xue ;
Lu, Tao ;
Lu, Wei .
APPLIED THERMAL ENGINEERING, 2007, 27 (2-3) :381-388
[4]   Experimental validation of a prototype ejector designed to reduce throttling losses encountered in transcritical R744 system operation [J].
Elbel, Stefan ;
Hrnjak, Pega .
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2008, 31 (03) :411-422
[5]   Multi-ejector concept for R-744 supermarket refrigeration [J].
Hafner, Armin ;
Foersterling, Sven ;
Banasiak, Krzysztof .
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2014, 43 :1-13
[6]   Transcritical CO2 refrigeration cycle with ejector-expansion device [J].
Li, DQ ;
Groll, EA .
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2005, 28 (05) :766-773
[7]   A correlation of optimal heat rejection pressures in transcritical carbon dioxide cycles [J].
Liao, SM ;
Zhao, TS ;
Jakobsen, A .
APPLIED THERMAL ENGINEERING, 2000, 20 (09) :831-841
[8]   REVIVAL OF CARBON-DIOXIDE AS A REFRIGERANT [J].
LORENTZEN, G .
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 1994, 17 (05) :292-301
[9]   STRATOSPHERIC SINK FOR CHLOROFLUOROMETHANES - CHLORINE ATOMIC-CATALYSED DESTRUCTION OF OZONE [J].
MOLINA, MJ ;
ROWLAND, FS .
NATURE, 1974, 249 (5460) :810-812
[10]   Comparative analysis on the energy use and environmental impact of different refrigeration systems for frozen food supermarket application [J].
Mylona, Zoi ;
Kolokotroni, Maria ;
Tsamos, Konstantinos M. ;
Tassou, Savvas A. .
PROCEEDINGS OF 1ST INTERNATIONAL CONFERENCE ON SUSTAINABLE ENERGY AND RESOURCE USE IN FOOD CHAINS (ICFES 2017), INCLUDING SYMPOSIUM ON HEAT RECOVERY AND EFFICIENT CONVERSION AND UTILISATION OF WASTE HEAT, 2017, 123 :121-130
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