A heat transfer correlation for transient vapor uptake of powdered adsorbent embedded onto the fins of heat exchangers

Ang Li, Kyaw Thu, Azhar Bin Ismail, Kim Choon Ng

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We present a detailed study on the transient heat transfer phenomena of powdered-adsorbent mixed with an organic binder for adherence to the fins of a heat exchangers. The transient performance of such an adsorbent-heat exchanger configuration has significant application potential in the adsorption desalination plants and chillers but seldom addressed in the literature. An experiment is designed to measure the heat transfer for several adsorption temperatures under a single vapor component environment. Analysis on the experimental data indicates that the adsorbent-adsorbate interactions contribute about 75% of the total thermal resistances throughout the uptake processes. It is found that the initial local adsorption heat transfer coefficients are significantly higher than the average values due primarily to the thermal mass effect of the adsorbent–adsorbate interaction layers. From these experiments, a correlation for the transient local adsorption heat transfer coefficients is presented at the sub-atmospheric pressures and assorted application temperatures.
Original languageEnglish (US)
Pages (from-to)668-677
Number of pages10
JournalApplied Thermal Engineering
Volume93
DOIs
StatePublished - Oct 25 2015

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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