Microchannel component technology for system-wide application in ammonia/water absorption heat pumps

被引：33

作者：

Garimella, Srinivas ^{[1
]}

Determan, Matthew D. ^{[1
]}

Meacham, J. Mark ^{[2
]}

Lee, Sangsoo ^{[3
]}

Ernst, Timothy C. ^{[4
]}

机构：

[1] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Sustainable Thermal Syst Lab, Atlanta, GA 30332 USA

[2] OpenCell Technol, Atlanta, GA 30332 USA

[3] Univ Nevada, Reno, NV 89557 USA

[4] Cummins Inc, Adv Engn Div, Columbus, IN 47201 USA

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2011年 / 34卷 / 05期

关键词：

Absorption; Miniaturization; Heat transfer; Mass transfer; Microchannel; Falling film;

D O I：

10.1016/j.ijrefrig.2011.03.005

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A novel miniaturization technology for binary-fluid heat and mass exchange was developed and numerous components were fabricated for demonstration as different parts of an ammonia/water absorption heat pump. Short lengths of microchannel tubes are placed in an array, with several such arrays stacked vertically. The ammonia/water solution flows in falling film/droplet mode on the outside of the tubes while coupling fluid flows through the microchannels. Coupling fluid heat transfer coefficients are extremely high due to the use of microchannel tubes. Effective vapor-solution contact on the absorption side minimizes heat and mass transfer resistances. This concept addresses all the requirements for absorber design in an extremely compact geometry. The technology is suitable for almost all absorption heat pump components (absorbers, desorbers, condensers, rectifiers, and evaporators) and for a wide range of binary-fluid processes. The development of several components for absorption and desorption at different capacities using this technology is reported here. (C) 2011 Elsevier Ltd and IIR. All rights reserved.

引用

页码：1184 / 1196

页数：13

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