Utilizing Accessible Heat Enhancing Cooling Effect with Three Bed Solar Adsorption Chiller

Rifat Ara Rouf, K. C.Amanul Alam, Bidyut Baran Saha, K. M.Ariful Kabir

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Conventional solar heat-driven single stage two bed chillers demand a large area for installation of solar thermal collector to activate the chiller, but in a highly populated tropical country open spaces is insufficient. In the intention to utilize accessible solar energy with better performance, a mathematical investigation is carried out with a three bed adsorption cooling unit working with silica gel-water pair. The studied chiller is powered by direct solar heat collected by a series of compound parabolic concentrator solar thermal collectors without any heat or mass recovery. The working principal of the chiller is, in principle, the same as the conventional two-bed adsorption chiller. However, instead of two half cycles, there are three one third cycles in the proposed chiller in which at every cycle the former desorber is kept in the precooling mode and as an adsorber for the next two one third cycles, respectively. As desorption kinetic is faster than the adsorption kinetics, this longer precooling mode helps the silica gel granules to adsorb more water molecules and increase evaporation rate. Hence, a better cooling effect of at least 1°C can be observed, increases chiller working hour after sunset for almost a further one hour.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalHeat Transfer Engineering
DOIs
Publication statusAccepted/In press - Apr 11 2018

Fingerprint

beds
precooling
Cooling
cooling
Adsorption
heat
cycles
adsorption
silica gel
accumulators
Silica Gel
Silica gel
sunset
evaporation rate
concentrators
kinetics
solar energy
Solar concentrators
Kinetics
Water

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Utilizing Accessible Heat Enhancing Cooling Effect with Three Bed Solar Adsorption Chiller. / Rouf, Rifat Ara; Alam, K. C.Amanul; Saha, Bidyut Baran; Kabir, K. M.Ariful.

In: Heat Transfer Engineering, 11.04.2018, p. 1-11.

Research output: Contribution to journalArticle

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