Design, fabrication, and experimental demonstration of a microscale monolithic modular absorption heat pump
- 作者：Matthew D. Determan ; Srinivas Garimella ; sgarimella@gatech.edu
- 关键词：Absorption ; Miniaturization ; Heat transfer ; Mass transfer ; Microchannel
- 刊名：Applied Thermal Engineering
- 出版年：2012
- 期刊代码：8_13594311
- 类别：ce
- 出版时间：5 December, 2012
- 卷：47
- 期：Complete
- 页码：119-125
- 文件大小：1646 K
摘要
The first ever conceptualization, design, fabrication and successful experimental demonstration of a thermally activated microscale absorption heat pump for miniaturized or mobile applications is reported here. Several-fold enhancements in coupled heat and mass transfer possible in microscale passages remove significant hurdles that have hindered the implementation of thermally activated heat pumps. Cooling capacities of 100聽W-10聽s of kW are possible through minor changes in component geometry. These mass-producible miniaturized systems can be packaged as monolithic full-system packages or as discrete, distributed hydronically coupled components integrated into buildings. A 300聽W nominal cooling capacity ammonia-water absorption heat pump with overall dimensions of 200聽脳聽200聽脳聽34聽mm and a mass of 7聽kg was fabricated and tested over a range of heat sink temperatures from 20 to 35聽掳C with 500-800聽W of desorber heat input to yield cooling duties of 136-300聽W.