TY - JOUR
T1 - Performance evaluation of a two-stage silica gel + water adsorption based cooling-cum-desalination system
AU - Mitra, S.
AU - Kumar, P.
AU - Srinivasan, Kandadai
AU - Dutta, P.
PY - 2015
Y1 - 2015
N2 - © 2015 Elsevier Ltd and IIR. All rights reserved. The first objective of this paper is to show that a single-stage adsorption based cooling-cum-desalination system cannot be used if air cooled heat rejection is used under tropical conditions. This objective is achieved by operating a silica gel + water adsorption chiller first in a single-stage mode and then in a 2-stage mode with 2 beds/stage in each case. The second objective is to improve upon the simulation results obtained earlier by way of empirically describing the thermal wave phenomena during switching of operation of beds between adsorption and desorption and vice versa. Performance indicators, namely, cooling capacity, coefficient of performance and desalinated water output are extracted for various evaporator pressures and half cycle times. The improved simulation model is found to interpret experimental results more closely than the earlier one. Reasons for decline in performance indicators between theoretical and actual scenarios are appraised.
AB - © 2015 Elsevier Ltd and IIR. All rights reserved. The first objective of this paper is to show that a single-stage adsorption based cooling-cum-desalination system cannot be used if air cooled heat rejection is used under tropical conditions. This objective is achieved by operating a silica gel + water adsorption chiller first in a single-stage mode and then in a 2-stage mode with 2 beds/stage in each case. The second objective is to improve upon the simulation results obtained earlier by way of empirically describing the thermal wave phenomena during switching of operation of beds between adsorption and desorption and vice versa. Performance indicators, namely, cooling capacity, coefficient of performance and desalinated water output are extracted for various evaporator pressures and half cycle times. The improved simulation model is found to interpret experimental results more closely than the earlier one. Reasons for decline in performance indicators between theoretical and actual scenarios are appraised.
U2 - 10.1016/j.ijrefrig.2015.06.018
DO - 10.1016/j.ijrefrig.2015.06.018
M3 - Article
SN - 0140-7007
VL - 58
SP - 186
EP - 197
JO - International Journal of Refrigeration
JF - International Journal of Refrigeration
ER -