Premium
Heat and fluid transport in an evaporative capillary pump
Author(s) -
Wulz H. G.,
Mayinger F.
Publication year - 1992
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440160909
Subject(s) - capillary action , heat pump , working fluid , boiling , thermodynamics , heat transfer , chemistry , mechanics , heat pipe , heat pump and refrigeration cycle , evaporation , heat exchanger , physics
The thermal and fluid mechanical properties of an evaporative capillary pump are described by means of characteristics that have been determined by tests. The capillary pump, which has been newly designed for an application in future space projects, serves a double function as the heat absorbing element in a closed loop as well as a pump circulating the working fluid. The working fluids used were CCI 3 F (freon R11) and liquid anhydrous ammonia. The paper describes the associated heat and mass transport in the capillary pump, and the physical process of the capillary pumping is explained. Furthermore, a model is introduced which explains the boiling heat transfer in the porous structure of the capillary pump.