Performance evaluation and determination of minimum desorption temperature of a two-stage air cooled silica gel/water adsorption system

Sourav Mitra, Thu Kyaw, Bidyut Baran Saha, Pradip Dutta

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

This paper presents an in-depth numerical and thermodynamic study of a two-stage, 2-bed silica gel/water adsorption system for simultaneous generation of cooling power and potable water. The system is air cooled where the ambient temperature remains constant at 36 °C. The first part of this paper investigates the effect of cycle time, chilled water inlet and heat source temperature on system performance viz. specific cooling capacity (SCC), specific daily water production (SDWP) and coefficient of performance (COP). A significant outcome of this study is to show that decrease in heat source temperature not only reduces the specific throughput but also increases the optimum cycle time, whereas COP is relatively insensitive to such alterations. The second part of this paper discusses the estimation of the minimum desorption temperature from the simulated system throughput results as well as from fundamental thermodynamic analysis of a two-stage adsorption cycle. This thermodynamic analysis provides a theoretical limit for minimum desorption temperature and optimal inter-stage pressure for a two-stage adsorption cycle.

Original languageEnglish
Pages (from-to)507-518
Number of pages12
JournalApplied Energy
Volume206
DOIs
Publication statusPublished - Jan 1 2017

Fingerprint

Silica gel
Desorption
desorption
gel
silica
adsorption
Adsorption
air
Air
thermodynamics
Water
Thermodynamics
heat source
temperature
water
Temperature
Throughput
Cooling
cooling
Potable water

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

Cite this

Performance evaluation and determination of minimum desorption temperature of a two-stage air cooled silica gel/water adsorption system. / Mitra, Sourav; Kyaw, Thu; Saha, Bidyut Baran; Dutta, Pradip.

In: Applied Energy, Vol. 206, 01.01.2017, p. 507-518.

Research output: Contribution to journalArticle

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