https://scholars.lib.ntu.edu.tw/handle/123456789/70684
標題: | Optimal control and performance test of solar-assisted cooling system | 作者: | Huang, B.J. Yen, C.W. Wu, J.H. Liu, J.H. Hsu, H.Y. Petrenko, V.O. Chang, J.M. Lu, C.W. |
公開日期: | 十月-2010 | 起(迄)頁: | 2243-2252 | 來源出版物: | Applied Thermal Engineering | 摘要: | The solar-assisted cooling system (SACH) was developed in the present study. The ejector cooling system (ECS) is driven by solar heat and connected in parallel with an inverter-type air conditioner (A/C). The cooling load can be supplied by the ECS when solar energy is available and the input power of the A/C can be reduced. In variable weather, the ECS will probably operate at off-design condition of ejector and the cooling capability of the ECS can be lost completely. In order to make the ejector operate at critical or non-critical double-choking condition to obtain a better performance, an electronic expansion valve was installed in the suction line of the ejector to regulate the opening of the expansion valve to control the evaporator temperature. This will make the SACH always produce cooling effect even at lower solar radiation periods while the ejector performs at off-design conditions. The energy saving of A/C is experimentally shown 50-70% due to the cooling performance of ECS. The long-term performance test results show that the daily energy saving is around 30-70% as compared to the energy consumption of A/C alone (without solar-driven ECS). The total energy saving of A/C is 52% over the entire test period. © 2010 Elsevier Ltd. All rights reserved. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/233173 | DOI: | 10.1016/j.applthermaleng.2010.06.004 | SDG/關鍵字: | Air conditioners; Cooling capability; Cooling effects; Cooling load; Cooling performance; Ejector cooling system; Ejector system; Electronic expansion valves; Energy consumption; Energy saving; Evaporator temperature; Expansion valves; Input power; Long term performance; Off design condition; Optimal controls; Performance tests; Solar cooling; Solar heat; Suction line; Total energy; Air conditioning; Air ejectors; Cooling; Cooling systems; Ejectors (pumps); Energy conservation; Solar radiation; Sun; Thermoelectric equipment; Solar energy |
顯示於: | 機械工程學系 |
檔案 | 描述 | 大小 | 格式 | |
---|---|---|---|---|
2010SACH-2.pdf | 2.06 MB | Adobe PDF | 檢視/開啟 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。