Towards an optimal performance of adsorption chillers: Reallocation of adsorption/desorption cycle times

I. I. El-Sharkawy, H. Abdelmeguid, Bidyut Baran Saha

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

This paper presents a theoretical investigation of the effect of adsorption/desorption times allocation on the performance of adsorption chillers. The ratio between the duration of adsorption and desorption modes is varied to optimize the system performance. Herein, (f) stands for the ratio between duration of desorption and adsorption modes of the adsorption cooling cycle. Employing a two-bed silica gel/water based adsorption chiller, theoretical results show that the system performance in terms of cooling capacity and COP is improved by reducing the ratio (f). However, percentage of improvement depends on the system design and its operating conditions. It is also found that, for each cycle time, there is an optimal value of (f) that maximizes the system performance. Theoretical results show that for a half cycle time of 350 s, switching time of 35 s and f of 0.8, the system delivers continues cooling using only two sorption reactors and minimizes fluctuations in chilled water outlet temperature.

Original languageEnglish
Pages (from-to)171-182
Number of pages12
JournalInternational Journal of Heat and Mass Transfer
Volume63
DOIs
Publication statusPublished - May 6 2013

Fingerprint

Desorption
desorption
Adsorption
cycles
adsorption
Cooling
cooling
Water
Silica Gel
Silica gel
silica gel
outlets
systems engineering
sorption
water
Sorption
beds
Systems analysis
reactors
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Towards an optimal performance of adsorption chillers : Reallocation of adsorption/desorption cycle times. / El-Sharkawy, I. I.; Abdelmeguid, H.; Saha, Bidyut Baran.

In: International Journal of Heat and Mass Transfer, Vol. 63, 06.05.2013, p. 171-182.

Research output: Contribution to journalArticle

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