Activated carbon+HFC 134a based two stage thermal compression adsorption refrigeration using low grade thermal energy sources

Performance evaluation of a two-stage silica gel + water adsorption based cooling-cum-desalination system

“…Hence, it is apparent that when the adsorber operates across a large differential pressure, bed kinetics makes it imminent to allow larger equilibration time that is not viable. This seems to be a common feature of adsorption based thermal compressors where it was reported that a similar situation exists with activated carbon + HFC 134a system [18]. Further, from fig.…”

A review on adsorption cooling systems with silica gel and carbon as adsorbents

“…This ensures that the system leakages are very small, which is a long term requirement of sealed electronic systems. They also analyzed a thermodynamic cycle of two stage thermal compression adsorption refrigeration system with activated carbon-HFC 134a pair [71]. The influence of evaporating, condensing/ adsorption and desorption temperatures was investigated through the uptake efficiency, the coefficient of performance and the exergetic efficiency.…”

Fluorocarbon adsorption in hierarchical porous frameworks

“…Sorbents examined for fluorocarbon-based adsorption chillers have thus far been limited to activated carbon 7,8 and zeolites 9 . Although the literature on gas adsorption in MOFs is very extensive [10][11][12][13][14][15][16][17][18][19] , fluorocarbon adsorption has been limited to zeolites and activated carbons [7][8][9] . The adsorption behaviour of the MOFs with high capacity at very low vapor pressures suggests MOFs can, in principle, be used in fluorocarbon-based adsorption heat pumps, separation of fluorocarbons from azeotrope mixture, removal of environmentally hazardous gases from atmosphere.…”