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 language | English |
|---|---|
| Pages (from-to) | 171-182 |
| Number of pages | 12 |
| Journal | International Journal of Heat and Mass Transfer |
| Volume | 63 |
| DOIs | |
| Publication status | Published - May 6 2013 |
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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 journal › Article
}
TY - JOUR
T1 - Towards an optimal performance of adsorption chillers
T2 - Reallocation of adsorption/desorption cycle times
AU - El-Sharkawy, I. I.
AU - Abdelmeguid, H.
AU - Saha, Bidyut Baran
PY - 2013/5/6
Y1 - 2013/5/6
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=84876937217&partnerID=8YFLogxK
U2 - 10.1016/j.ijheatmasstransfer.2013.03.076
DO - 10.1016/j.ijheatmasstransfer.2013.03.076
M3 - Article
AN - SCOPUS:84876937217
VL - 63
SP - 171
EP - 182
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
SN - 0017-9310
ER -