Research on a compact adsorption room air conditioner
摘要:
A novel compact adsorption room air conditioner with a cooling capacity of 1 kW has been designed, and two prototypes have been built. A two bed, continuous adsorption refrigeration cycle with heat recovery and mass recovery is adopted. Micropore spherical silica gel and water are selected as the working pair. A gravity heat pipe with methanol as working medium is designed to output the cooling. Experimental investigations have indicated that under typical air conditioning conditions, for the first prototype, a cooling capacity of 687 W and a COP (coefficient of performance) of 0.307 can be obtained. However, for the improved one, a cooling capacity of 790 W and a COP of 0.446 can be reached. It is also proved that the operating temperatures have strong influences on the performance. The designed room air conditioner can be driven by a low grade heat source (< 90 degrees C) and has small dimensions of 300 mm (depth), 500 mm (width) and 950 mm (height). (c) 2006 Elsevier Ltd. All rights reserved.
5-Iodo-2(2H)-pyranone derivatives have been selectively synthesized by reaction of stereodefined methyl 2-en-4-ynoates with iodine in MeCN, CH2Cl2 or C6H6 at 20degreesC (Method C) or by treatment of these esters with ICl in CH2Cl2 at 20degreesC (Method B). Methods B and C proved also to be suitable for the preparation of 3-aryl-4-iodoisocoumarins from the corresponding methyl 2-(arylethynyl)benzoates. Interestingly, the high selectivity of iodolactonization of stereodefined methyl 2-en-4-ynoates by Method B allowed preparation in moderate yields of 2(2H)-pyranone derivatives by a one-pot sequence of iodolactonization and Stille-type reactions. (C) 2002 Elsevier Science Ltd. All rights reserved.
Luo, Fen-Tair; Hsieh, Li-Chen, Journal of the Chinese Chemical Society, 1994, vol. 41, # 6, p. 871 - 873
作者:Luo, Fen-Tair、Hsieh, Li-Chen
DOI:——
日期:——
Research on a compact adsorption room air conditioner
作者:G.Z. Yang、Z.Z. Xia、R.Z. Wang、Daou Keletigui、D.C. Wang、Z.H. Dong、X. Yang
DOI:10.1016/j.enconman.2005.12.005
日期:2006.9
A novel compact adsorption room air conditioner with a cooling capacity of 1 kW has been designed, and two prototypes have been built. A two bed, continuous adsorption refrigeration cycle with heat recovery and mass recovery is adopted. Micropore spherical silica gel and water are selected as the working pair. A gravity heat pipe with methanol as working medium is designed to output the cooling. Experimental investigations have indicated that under typical air conditioning conditions, for the first prototype, a cooling capacity of 687 W and a COP (coefficient of performance) of 0.307 can be obtained. However, for the improved one, a cooling capacity of 790 W and a COP of 0.446 can be reached. It is also proved that the operating temperatures have strong influences on the performance. The designed room air conditioner can be driven by a low grade heat source (< 90 degrees C) and has small dimensions of 300 mm (depth), 500 mm (width) and 950 mm (height). (c) 2006 Elsevier Ltd. All rights reserved.