TY - JOUR
T1 - Entropy generation minimization of an advanced two-bed adsorption refrigeration system
AU - Yagnamurthy, S.
AU - Chauhan, P. R.
AU - Saha, B. B.
AU - Tyagi, S. K.
N1 - Funding Information:
One of the authors (PRC) thankfully acknowledges the financial assistance in the form of a fellowship due to the Department of Energy Science and Engineering, Indian Institute of Technology Delhi. The authors are also thankful to the learned reviewers and the Editor for providing fruitful suggestions to modify the manuscript into the present form.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/12
Y1 - 2022/12
N2 - This article presents the thermodynamic assessment of an advanced adsorption chiller with an aim towards entropy generation minimization through the selection of appropriate operating strategies, temperatures, and design modifications. The present study carries out a second law analysis of a two-bed silica gel water pair-based adsorption cooling system, with a focus on the under-explored aspects of a heat recovery strategy and auxiliary consumption-reducing measures. A second law performance index, viz. specific irreversibility, is introduced for effectively incorporating the entropy generation, auxiliary electricity consumption, and cooling capacity, and it has been further verified to be an indicator of second law efficiency. The performance of the system has been numerically evaluated under the normal and passive heat recovery strategies, where it is found that the passive heat recovery strategy offers a lower entropy generation by 63%. The study further investigates the second law efficiency impact of adopting a capillary-assisted evaporator for auxiliary electricity consumption reduction. It is observed that the specific irreversibility could reduce by up to 22% over a conventional falling film design. The analysis and results presented in this study are anticipated to increase the effectiveness of adsorption chillers for heat recovery applications.
AB - This article presents the thermodynamic assessment of an advanced adsorption chiller with an aim towards entropy generation minimization through the selection of appropriate operating strategies, temperatures, and design modifications. The present study carries out a second law analysis of a two-bed silica gel water pair-based adsorption cooling system, with a focus on the under-explored aspects of a heat recovery strategy and auxiliary consumption-reducing measures. A second law performance index, viz. specific irreversibility, is introduced for effectively incorporating the entropy generation, auxiliary electricity consumption, and cooling capacity, and it has been further verified to be an indicator of second law efficiency. The performance of the system has been numerically evaluated under the normal and passive heat recovery strategies, where it is found that the passive heat recovery strategy offers a lower entropy generation by 63%. The study further investigates the second law efficiency impact of adopting a capillary-assisted evaporator for auxiliary electricity consumption reduction. It is observed that the specific irreversibility could reduce by up to 22% over a conventional falling film design. The analysis and results presented in this study are anticipated to increase the effectiveness of adsorption chillers for heat recovery applications.
UR - http://www.scopus.com/inward/record.url?scp=85140092853&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85140092853&partnerID=8YFLogxK
U2 - 10.1016/j.icheatmasstransfer.2022.106461
DO - 10.1016/j.icheatmasstransfer.2022.106461
M3 - Article
AN - SCOPUS:85140092853
SN - 0735-1933
VL - 139
JO - International Communications in Heat and Mass Transfer
JF - International Communications in Heat and Mass Transfer
M1 - 106461
ER -
