TY - JOUR

T1 - Dynamic optimization of adsorptive chillers

T2 - Compact layer vs. bed of loose grains

AU - Girnik, I. S.

AU - Grekova, A. D.

AU - Gordeeva, L. G.

AU - Aristov, Yu I.

PY - 2017/10

Y1 - 2017/10

N2 - This paper addresses the dynamic study on methanol ad-/desorption in compact adsorbent layers, performed by a Volumetric Large Temperature Jump (V-LTJ) method, appropriate for dynamic examination of adsorptive chillers. The commercial active carbon ACM-35.4 was used as an adsorbent, and polyvinyl alcohol as a binder. The influence of the carbon grain size and the layer thickness on the V-LTJ dynamics was studied at a fixed binder content of 12 wt%. To single out the effect of consolidation, a detailed comparison was made with reference beds of the loose carbon grains, having the same configuration, however, containing no binder. The following findings are reported for the compact layers: (i) near-exponential shape of the dynamic curves of methanol adsorption; (ii) invariance of the dynamics with respect to the ratio (S/m) = / (iii) linear relationship between the maximal specific power and this ratio. For the compact layers, the process becomes faster by a factor of 1.5–3.5 as compared to the reference beds.

AB - This paper addresses the dynamic study on methanol ad-/desorption in compact adsorbent layers, performed by a Volumetric Large Temperature Jump (V-LTJ) method, appropriate for dynamic examination of adsorptive chillers. The commercial active carbon ACM-35.4 was used as an adsorbent, and polyvinyl alcohol as a binder. The influence of the carbon grain size and the layer thickness on the V-LTJ dynamics was studied at a fixed binder content of 12 wt%. To single out the effect of consolidation, a detailed comparison was made with reference beds of the loose carbon grains, having the same configuration, however, containing no binder. The following findings are reported for the compact layers: (i) near-exponential shape of the dynamic curves of methanol adsorption; (ii) invariance of the dynamics with respect to the ratio (S/m) = / (iii) linear relationship between the maximal specific power and this ratio. For the compact layers, the process becomes faster by a factor of 1.5–3.5 as compared to the reference beds.

KW - Activated carbon

KW - Adsorption dynamics

KW - Adsorptive chillers

KW - Binder

KW - Heat transfer enhancement

KW - Methanol

KW - SYSTEM

KW - HEAT-PUMPS

KW - SORPTION

KW - THERMAL-CONDUCTIVITY

KW - SPHERICAL-PARTICLES

KW - ACTIVATED CARBON

KW - WORKING PAIR

KW - COOLING APPLICATIONS

KW - REFRIGERATION

KW - WATER

UR - http://www.scopus.com/inward/record.url?scp=85024124509&partnerID=8YFLogxK

U2 - 10.1016/j.applthermaleng.2017.06.141

DO - 10.1016/j.applthermaleng.2017.06.141

M3 - Article

AN - SCOPUS:85024124509

VL - 125

SP - 823

EP - 829

JO - Applied Thermal Engineering

JF - Applied Thermal Engineering

SN - 1359-4311

ER -