Nanofibrous membrane-based absorption refrigeration system

Journal Article · Sun Dec 01 00:00:00 EST 2013 · International Journal of Refrigeration

DOI:https://doi.org/10.1016/j.ijrefrig.2013.07.019· OSTI ID:1211051

Isfahani, RN; Sampath, K; Moghaddam, S

This paper presents a study on the efficacy of highly porous nanofibrous membranes for application in membrane-based absorbers and desorbers. Permeability studies showed that membranes with a pore size greater than about one micron have a sufficient permeability for application in the absorber heat exchanger. Membranes with smaller pores were found to be adequate for the desorber heat exchanger. The membranes were implemented in experimental membrane-based absorber and desorber modules and successfully tested. Parametric studies were conducted on both absorber and desorber processes. Studies on the absorption process were focused on the effects of water vapor pressure, cooling water temperature, and the solution velocity on the absorption rate. Desorption studies were conducted on the effects of wall temperature, vapor and solution pressures, and the solution velocity on the desorption rate. Significantly higher absorption and desorption rates than in the falling film absorbers and desorbers were achieved. Published by Elsevier Ltd.

• Sponsoring Organization: USDOE Advanced Research Projects Agency - Energy (ARPA-E)
• DOE Contract Number: DE-AR0000133
• OSTI ID: 1211051
• Journal Information: International Journal of Refrigeration, Vol. 36, Issue 8; ISSN 0140-7007
• Country of Publication: United States
• Language: English