A new cycle time allocation for enhancing the performance of two-bed adsorption chillers

T. Miyazaki, A. Akisawa, B. B. Saha, I. I. El-Sharkawy, A. Chakraborty

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

The present study proposed a new cycle time allocation in silica gel-water based adsorption chillers to enhance their performances. The new cycle time allocation not only improves the cooling capacity and coefficient of performance (COP), but also contributes in the reduction of delivered chilled water fluctuations. In a conventional adsorption chiller operation, the appropriate pre-heating/pre-cooling process enhances the cooling capacity, whereas the excess pre-heating/pre-cooling time abates the average cooling capacity. The proposed new cycle time allocation allows the continuous cooling effect over the cycle without sacrificing the effect of pre-heating/pre-cooling. Simulation results showed that the new cycle time was effective for both RD type silica gel-water and CaCl2-in-silica gel-water pairs, and the cooling capacity was increased as much as by 6%.

Original languageEnglish
Pages (from-to)846-853
Number of pages8
JournalInternational Journal of Refrigeration
Volume32
Issue number5
DOIs
Publication statusPublished - Aug 1 2009

Fingerprint

Cooling
Adsorption
Silica gel
Heating
Water

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Mechanical Engineering

Cite this

A new cycle time allocation for enhancing the performance of two-bed adsorption chillers. / Miyazaki, T.; Akisawa, A.; Saha, B. B.; El-Sharkawy, I. I.; Chakraborty, A.

In: International Journal of Refrigeration, Vol. 32, No. 5, 01.08.2009, p. 846-853.

Research output: Contribution to journalArticle

@article{8ac2dbf0be924617bbbbe3df004d1eb5,
title = "A new cycle time allocation for enhancing the performance of two-bed adsorption chillers",
abstract = "The present study proposed a new cycle time allocation in silica gel-water based adsorption chillers to enhance their performances. The new cycle time allocation not only improves the cooling capacity and coefficient of performance (COP), but also contributes in the reduction of delivered chilled water fluctuations. In a conventional adsorption chiller operation, the appropriate pre-heating/pre-cooling process enhances the cooling capacity, whereas the excess pre-heating/pre-cooling time abates the average cooling capacity. The proposed new cycle time allocation allows the continuous cooling effect over the cycle without sacrificing the effect of pre-heating/pre-cooling. Simulation results showed that the new cycle time was effective for both RD type silica gel-water and CaCl2-in-silica gel-water pairs, and the cooling capacity was increased as much as by 6{\%}.",
author = "T. Miyazaki and A. Akisawa and Saha, {B. B.} and El-Sharkawy, {I. I.} and A. Chakraborty",
year = "2009",
month = "8",
day = "1",
doi = "10.1016/j.ijrefrig.2008.12.002",
language = "English",
volume = "32",
pages = "846--853",
journal = "International Journal of Refrigeration",
issn = "0140-7007",
publisher = "Elsevier Limited",
number = "5",

}

TY - JOUR

T1 - A new cycle time allocation for enhancing the performance of two-bed adsorption chillers

AU - Miyazaki, T.

AU - Akisawa, A.

AU - Saha, B. B.

AU - El-Sharkawy, I. I.

AU - Chakraborty, A.

PY - 2009/8/1

Y1 - 2009/8/1

N2 - The present study proposed a new cycle time allocation in silica gel-water based adsorption chillers to enhance their performances. The new cycle time allocation not only improves the cooling capacity and coefficient of performance (COP), but also contributes in the reduction of delivered chilled water fluctuations. In a conventional adsorption chiller operation, the appropriate pre-heating/pre-cooling process enhances the cooling capacity, whereas the excess pre-heating/pre-cooling time abates the average cooling capacity. The proposed new cycle time allocation allows the continuous cooling effect over the cycle without sacrificing the effect of pre-heating/pre-cooling. Simulation results showed that the new cycle time was effective for both RD type silica gel-water and CaCl2-in-silica gel-water pairs, and the cooling capacity was increased as much as by 6%.

AB - The present study proposed a new cycle time allocation in silica gel-water based adsorption chillers to enhance their performances. The new cycle time allocation not only improves the cooling capacity and coefficient of performance (COP), but also contributes in the reduction of delivered chilled water fluctuations. In a conventional adsorption chiller operation, the appropriate pre-heating/pre-cooling process enhances the cooling capacity, whereas the excess pre-heating/pre-cooling time abates the average cooling capacity. The proposed new cycle time allocation allows the continuous cooling effect over the cycle without sacrificing the effect of pre-heating/pre-cooling. Simulation results showed that the new cycle time was effective for both RD type silica gel-water and CaCl2-in-silica gel-water pairs, and the cooling capacity was increased as much as by 6%.

UR - http://www.scopus.com/inward/record.url?scp=67349220123&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67349220123&partnerID=8YFLogxK

U2 - 10.1016/j.ijrefrig.2008.12.002

DO - 10.1016/j.ijrefrig.2008.12.002

M3 - Article

AN - SCOPUS:67349220123

VL - 32

SP - 846

EP - 853

JO - International Journal of Refrigeration

JF - International Journal of Refrigeration

SN - 0140-7007

IS - 5

ER -