Evaluation of the ejector two-stage compression refrigeration cycle with work performance from energy, conventional exergy and advanced exergy perspectives
Low temperature cold chain is the top priority of logistics development at this stage. CO2 (carbon dioxide) refrigeration system is widely used. However, the low efficiency of CO2 refrigeration system is the biggest obstacle to its development. In this research work, EES (Engineering equation solver...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
|
| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722018339 |
| _version_ | 1797901903597666304 |
|---|---|
| author | Dazhang Yang Zhu Jie Qing Zhang Yang Li Jing Xie |
| author_facet | Dazhang Yang Zhu Jie Qing Zhang Yang Li Jing Xie |
| author_sort | Dazhang Yang |
| collection | DOAJ |
| description | Low temperature cold chain is the top priority of logistics development at this stage. CO2 (carbon dioxide) refrigeration system is widely used. However, the low efficiency of CO2 refrigeration system is the biggest obstacle to its development. In this research work, EES (Engineering equation solver) is used to simulate the system, which is widely used in thermodynamic modeling and calculation, a novel trans-critical CO2 refrigeration cycle with ejector for low-temperature storage is proposed. The energy and conventional exergy model of the system are established, and the advanced exergy model is established based on the conventional exergy model, and the actual performance of the system is analyzed, and the optimization potential of the system components is analyzed through the commonness of the two exergy analysis methods. The results show that the exergy destruction of each component of the ejector is the largest in the system, and the optimization potential is the highest in both conventional and advanced exergy models. After studying the influence of main parameters in the system cycle on the system performance and performance, it is found that there is an optimum intermediate pressure and gas cooler pressure in the system to maximize the system performance and efficiency. According to the influence of the change of system parameters on the system, it is found that the outlet temperature of gas cooler has the greatest influence on the optimization of ejector. |
| first_indexed | 2024-04-10T09:09:20Z |
| format | Article |
| id | doaj.art-e19709319ac04dfdb20a729cbe22e9ae |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-04-10T09:09:20Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-e19709319ac04dfdb20a729cbe22e9ae2023-02-21T05:13:43ZengElsevierEnergy Reports2352-48472022-11-0181294412957Evaluation of the ejector two-stage compression refrigeration cycle with work performance from energy, conventional exergy and advanced exergy perspectivesDazhang Yang0Zhu Jie1Qing Zhang2Yang Li3Jing Xie4College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, China; Quality Supervision, Inspection and Testing Center for Cold Storage and Refrigeration Equipment, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China; National Experimental Teaching Demonstration Center for Food Science and Engineering, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, ChinaCollege of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, China; Quality Supervision, Inspection and Testing Center for Cold Storage and Refrigeration Equipment, Ministry of Agriculture and Rural Affairs, Shanghai 201306, ChinaCollege of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, China; Quality Supervision, Inspection and Testing Center for Cold Storage and Refrigeration Equipment, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China; National Experimental Teaching Demonstration Center for Food Science and Engineering, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, China; Quality Supervision, Inspection and Testing Center for Cold Storage and Refrigeration Equipment, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China; National Experimental Teaching Demonstration Center for Food Science and Engineering, Shanghai Ocean University, Shanghai 201306, China; Corresponding author at: College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.Low temperature cold chain is the top priority of logistics development at this stage. CO2 (carbon dioxide) refrigeration system is widely used. However, the low efficiency of CO2 refrigeration system is the biggest obstacle to its development. In this research work, EES (Engineering equation solver) is used to simulate the system, which is widely used in thermodynamic modeling and calculation, a novel trans-critical CO2 refrigeration cycle with ejector for low-temperature storage is proposed. The energy and conventional exergy model of the system are established, and the advanced exergy model is established based on the conventional exergy model, and the actual performance of the system is analyzed, and the optimization potential of the system components is analyzed through the commonness of the two exergy analysis methods. The results show that the exergy destruction of each component of the ejector is the largest in the system, and the optimization potential is the highest in both conventional and advanced exergy models. After studying the influence of main parameters in the system cycle on the system performance and performance, it is found that there is an optimum intermediate pressure and gas cooler pressure in the system to maximize the system performance and efficiency. According to the influence of the change of system parameters on the system, it is found that the outlet temperature of gas cooler has the greatest influence on the optimization of ejector.http://www.sciencedirect.com/science/article/pii/S2352484722018339Carbon dioxideTrans-critical refrigerationEjectorExergy destructionEnergy analysis |
| spellingShingle | Dazhang Yang Zhu Jie Qing Zhang Yang Li Jing Xie Evaluation of the ejector two-stage compression refrigeration cycle with work performance from energy, conventional exergy and advanced exergy perspectives Energy Reports Carbon dioxide Trans-critical refrigeration Ejector Exergy destruction Energy analysis |
| title | Evaluation of the ejector two-stage compression refrigeration cycle with work performance from energy, conventional exergy and advanced exergy perspectives |
| title_full | Evaluation of the ejector two-stage compression refrigeration cycle with work performance from energy, conventional exergy and advanced exergy perspectives |
| title_fullStr | Evaluation of the ejector two-stage compression refrigeration cycle with work performance from energy, conventional exergy and advanced exergy perspectives |
| title_full_unstemmed | Evaluation of the ejector two-stage compression refrigeration cycle with work performance from energy, conventional exergy and advanced exergy perspectives |
| title_short | Evaluation of the ejector two-stage compression refrigeration cycle with work performance from energy, conventional exergy and advanced exergy perspectives |
| title_sort | evaluation of the ejector two stage compression refrigeration cycle with work performance from energy conventional exergy and advanced exergy perspectives |
| topic | Carbon dioxide Trans-critical refrigeration Ejector Exergy destruction Energy analysis |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722018339 |
| work_keys_str_mv | AT dazhangyang evaluationoftheejectortwostagecompressionrefrigerationcyclewithworkperformancefromenergyconventionalexergyandadvancedexergyperspectives AT zhujie evaluationoftheejectortwostagecompressionrefrigerationcyclewithworkperformancefromenergyconventionalexergyandadvancedexergyperspectives AT qingzhang evaluationoftheejectortwostagecompressionrefrigerationcyclewithworkperformancefromenergyconventionalexergyandadvancedexergyperspectives AT yangli evaluationoftheejectortwostagecompressionrefrigerationcyclewithworkperformancefromenergyconventionalexergyandadvancedexergyperspectives AT jingxie evaluationoftheejectortwostagecompressionrefrigerationcyclewithworkperformancefromenergyconventionalexergyandadvancedexergyperspectives |