NOVEL EXPLOITATION OF DUBININ-ASTAKHOV THEORY IN SORPTION REACTOR DESIGN FOR REFRIGERATION AND HEAT PUMPS APPLICATIONS

摘要

This paper describes novel methodology that is based on a single given adsorbent-refrigerant pair characteristic (example activated carbon 208C-Ammonia pair) leading to the characterization of the same adsorbent (activated carbon 208C) with various refrigerants such as Methanol, Ethanol, R723 (azeotropic mixture of 60% Ammonia and 40% Dimethyl Ether) and R744 (Carbon Dioxide). Overall, with exception of R744 (Carbon Dioxide), the results obtained shows a marginal difference compared to standard method that heavily depends on experimental data. For example with methanol, the standard method produces a maximum uptake (x_o) of 0.3676 kg methanol/kg carbon while the new method predicts 0.3740 kg methanol/kg carbon; with CO_2 both standard and new methods predict 0.3242 kg CO_2/kg carbon and 0.3850 kg CO_2/kg carbon.