Adsorption cooling cycles for adsorbent/adsorbate pairs at assorted operating pressures

Wai Soong Loh; Kim Choon Ng; Anutosh Chakraborty; Bidyut Baran Saha; Ibrahim I. El-Sharkawy

Adsorption cooling cycles for adsorbent/adsorbate pairs at assorted operating pressures

Wai Soong Loh, Kim Choon Ng^*, Anutosh Chakraborty, Bidyut Baran Saha, Ibrahim I. El-Sharkawy

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

This paper presents the performance analysis of an ideal heat driven adsorption cooling cycle in both low and high operating pressures. A total of eight specimens of adsorbents and refrigerant pairs namely activated carbon fibre (ACF) of type A15/ethanol, A20/ethanol, Silica gel/water, Chemviron/R134a, Fluka/R134a, A20/R134a, Maxsorb II/R134a and Maxsorb III/R134a have been investigated. The relationships between equilibrium pressures, adsorbent temperatures and equilibrium adsorption concentrations (Dühring or P-T-W diagram) have been presented. The understanding of Dühring diagram (as shown below) is crucial in the design of commercial adsorption chillers. Parametric analysis has been carried out with various regeneration (desorption) and evaporating temperatures. Theoretical analysis shows that the ACF (A20)/ethanol can achieve 344 kJ/kg_adsorbent specific cooling effect (SCE) with regeneration temperature at 85°C. Moreover, the ACF (A20)/ethanol exhibits a coefficient of performance (COP) of 0.7 and followed by the silica gel/water pair with COP of 0.68 at low regeneration temperature (below 85°C).

Original language	English (US)
Title of host publication	4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009
Publisher	National Taipei University of Technology
Pages	287-292
Number of pages	6
ISBN (Print)	9868509610, 9789868509610
State	Published - 2009
Externally published	Yes
Event	4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009 - Taipei, Taiwan, Province of China Duration: May 20 2009 → May 22 2009

Other

Other	4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009
Country/Territory	Taiwan, Province of China
City	Taipei
Period	05/20/09 → 05/22/09

Keywords

Activate carbon
Adsorption chillers
Dühring diagram
Silica gel

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)

Cite this

@inproceedings{68dbc217286d450a8377a75b9eade183,

title = "Adsorption cooling cycles for adsorbent/adsorbate pairs at assorted operating pressures",

abstract = "This paper presents the performance analysis of an ideal heat driven adsorption cooling cycle in both low and high operating pressures. A total of eight specimens of adsorbents and refrigerant pairs namely activated carbon fibre (ACF) of type A15/ethanol, A20/ethanol, Silica gel/water, Chemviron/R134a, Fluka/R134a, A20/R134a, Maxsorb II/R134a and Maxsorb III/R134a have been investigated. The relationships between equilibrium pressures, adsorbent temperatures and equilibrium adsorption concentrations (D{\"u}hring or P-T-W diagram) have been presented. The understanding of D{\"u}hring diagram (as shown below) is crucial in the design of commercial adsorption chillers. Parametric analysis has been carried out with various regeneration (desorption) and evaporating temperatures. Theoretical analysis shows that the ACF (A20)/ethanol can achieve 344 kJ/kgadsorbent specific cooling effect (SCE) with regeneration temperature at 85°C. Moreover, the ACF (A20)/ethanol exhibits a coefficient of performance (COP) of 0.7 and followed by the silica gel/water pair with COP of 0.68 at low regeneration temperature (below 85°C).",

keywords = "Activate carbon, Adsorption chillers, D{\"u}hring diagram, Silica gel",

author = "Loh, {Wai Soong} and Ng, {Kim Choon} and Anutosh Chakraborty and Saha, {Bidyut Baran} and El-Sharkawy, {Ibrahim I.}",

year = "2009",

language = "English (US)",

isbn = "9868509610",

pages = "287--292",

booktitle = "4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009",

publisher = "National Taipei University of Technology",

note = "4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009 ; Conference date: 20-05-2009 Through 22-05-2009",

}

Loh, WS, Ng, KC, Chakraborty, A, Saha, BB & El-Sharkawy, II 2009, Adsorption cooling cycles for adsorbent/adsorbate pairs at assorted operating pressures. in 4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009. National Taipei University of Technology, pp. 287-292, 4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009, Taipei, Taiwan, Province of China, 05/20/09.

Adsorption cooling cycles for adsorbent/adsorbate pairs at assorted operating pressures. / Loh, Wai Soong; Ng, Kim Choon; Chakraborty, Anutosh et al.
4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009. National Taipei University of Technology, 2009. p. 287-292.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Adsorption cooling cycles for adsorbent/adsorbate pairs at assorted operating pressures

AU - Loh, Wai Soong

AU - Ng, Kim Choon

AU - Chakraborty, Anutosh

AU - Saha, Bidyut Baran

AU - El-Sharkawy, Ibrahim I.

PY - 2009

Y1 - 2009

N2 - This paper presents the performance analysis of an ideal heat driven adsorption cooling cycle in both low and high operating pressures. A total of eight specimens of adsorbents and refrigerant pairs namely activated carbon fibre (ACF) of type A15/ethanol, A20/ethanol, Silica gel/water, Chemviron/R134a, Fluka/R134a, A20/R134a, Maxsorb II/R134a and Maxsorb III/R134a have been investigated. The relationships between equilibrium pressures, adsorbent temperatures and equilibrium adsorption concentrations (Dühring or P-T-W diagram) have been presented. The understanding of Dühring diagram (as shown below) is crucial in the design of commercial adsorption chillers. Parametric analysis has been carried out with various regeneration (desorption) and evaporating temperatures. Theoretical analysis shows that the ACF (A20)/ethanol can achieve 344 kJ/kgadsorbent specific cooling effect (SCE) with regeneration temperature at 85°C. Moreover, the ACF (A20)/ethanol exhibits a coefficient of performance (COP) of 0.7 and followed by the silica gel/water pair with COP of 0.68 at low regeneration temperature (below 85°C).

AB - This paper presents the performance analysis of an ideal heat driven adsorption cooling cycle in both low and high operating pressures. A total of eight specimens of adsorbents and refrigerant pairs namely activated carbon fibre (ACF) of type A15/ethanol, A20/ethanol, Silica gel/water, Chemviron/R134a, Fluka/R134a, A20/R134a, Maxsorb II/R134a and Maxsorb III/R134a have been investigated. The relationships between equilibrium pressures, adsorbent temperatures and equilibrium adsorption concentrations (Dühring or P-T-W diagram) have been presented. The understanding of Dühring diagram (as shown below) is crucial in the design of commercial adsorption chillers. Parametric analysis has been carried out with various regeneration (desorption) and evaporating temperatures. Theoretical analysis shows that the ACF (A20)/ethanol can achieve 344 kJ/kgadsorbent specific cooling effect (SCE) with regeneration temperature at 85°C. Moreover, the ACF (A20)/ethanol exhibits a coefficient of performance (COP) of 0.7 and followed by the silica gel/water pair with COP of 0.68 at low regeneration temperature (below 85°C).

KW - Activate carbon

KW - Adsorption chillers

KW - Dühring diagram

KW - Silica gel

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M3 - Conference contribution

AN - SCOPUS:84907415670

SN - 9868509610

SN - 9789868509610

SP - 287

EP - 292

BT - 4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009

PB - National Taipei University of Technology

T2 - 4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009

Y2 - 20 May 2009 through 22 May 2009

ER -

Adsorption cooling cycles for adsorbent/adsorbate pairs at assorted operating pressures

Abstract

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Keywords

ASJC Scopus subject areas

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