Effect of surfactant additive on pool boiling of concentrated lithium bromide solution

Journal Article · Sun Nov 01 00:00:00 EST 1998 · International Communications in Heat and Mass Transfer

DOI:https://doi.org/10.1016/S0735-1933(98)00103-1· OSTI ID:292975

Wu, W T; Yang, Y M; Maa, J R ^[1]

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1. National Cheng Kung Univ., Tainan (Taiwan, Province of China). Dept. of Chemical Engineering

The measurements of nucleate pool boiling heat transfer rate and surface tension were made for pure water and 50 wt.% lithium bromide solution with various amounts of n-octanol. Regardless of low concentration, n-octanol additive depresses considerably the surface tension of the liquids. The pool boiling data, however, reveal that the addition of surfactant results in insignificant enhancement of heat transfer for both pure water and the concentrated LiBr solution. With the results of this work, the performance improvement received from using n-octanol additive in working liquid of an absorption heat pump (AHP) is consequently due to the enhancement of heat and mass transfer in the absorber (but not generator) by the induced interfacial turbulence.

• OSTI ID: 292975
• Journal Information: International Communications in Heat and Mass Transfer, Vol. 25, Issue 8; Other Information: PBD: Nov 1998
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
LITHIUM BROMIDES
AQUEOUS SOLUTIONS
ABSORPTION REFRIGERATION CYCLE
HEAT PUMPS
NUCLEATE BOILING
POOL BOILING
HEAT TRANSFER
SURFACTANTS