Effects of contact resistance and metal additives in finned-tube adsorbent beds on the performance of silica gel/water adsorption chiller

Special issue: Sustainable thermal energy management in the process industries international conference (SusTEM2011)

“…Wu et al [11] briefly describe the current state of the refrigeration industry in China and reports that new standards and novel multi-functional products using diverse energy sources are required for energy efficiency improvement. More specifically, Rezk et al [12] develop simulation models to compare three heat transfer enhancement techniques for an adsorption chiller, by applying a coating to eliminate contact resistance, using metal particles to enhance thermal conductivity and combining these into a single model. The results show that the maximum cooling capacity and coefficient of performance (COP) can be improved by 25% and 10% respectively.…”

Performance of a finned activated carbon cloth-ethanol adsorption chiller

“…Per unit mass of adsorbent, cooling power is restricted by the low 54 thermal conductivity of adsorbents. To improve metal-to-sorbent heat transfer, and shorten conduction 55 paths lengths, one can adhere, press or coat adsorbent to fins [2] [3]. Informative research reviews are 56 available in [4] [5], [6].…”

Calorimetric measurements of the dynamics of a finned adsorbent: early assessment of the activated carbon cloth–ethanol pair with prismatic aluminium fins

“…Heat Qa was 162 corrected for (1) estimated heat losses plus a minor calibration offset, giving Q (a-l) (2) further, the sensible 163 heat storage in the aluminium structure, ACC and sorbate, giving Q (a-lx) and relating to mass of vapour 164 adsorbed and adsorption loading X. The corrections necessitated the computation of average ACC 165 temperature and average fin temperature; the temperatures at the fin base and in the ACC formed required 166 boundary conditions (location 5 in Fig.…”