Performance analysis of activated carbon + HFC-134a adsorption coolers

Development and transient performance results of a single stage activated carbon – HFC 134a closed cycle adsorption cooling system

“…In the present case, MF is about 2.5 (for an uptake efficiency of 77%), as against 2 proposed earlier [4]. For an adsorption time of up to about 210 s, an amount of about 36 g of AC needs to be contained in each thermal compressor.…”

“…Herein, the theoretical values are also superposed. The heating inventories were calculated for the experimental operating temperature and pressure conditions for all the four contributors, namely activated carbon, compressor body, heat of desorption and enthalpy change of adsorbed refrigerant which has been elaborated by Banker et al [4]. Although significant deviations are present, the qualitative trends are comparable.…”

“…Saha et al [1,2] have shown that, theoretically, these adsorption refrigeration systems can be driven with heat sources at as low as 55°C. Considerable amount of work on modeling of single, two stage thermal and thermal + mechanical hybrid compression cycles involving AC and HFC 134a has been completed [3][4][5][6]. A consolidated thermodynamic analysis, details of construction of a laboratory model and its performance evaluation were described in detail by Banker [7].…”

Adsorption isotherms and Sips models of nitrogen, methane, ethane, and propane on commercial activated carbons and polyvinylidene chloride

“…These compressors can establish a pressurized gas flow by the cyclic adsorption and desorption of a working gas at a sorber (Prasad et al 1996;Banker et al 2004;Lu et al 2006). These sorption compressors are thermally driven and operate without moving parts; meaning they are highly reliable, long life, and vibration free.…”

Adsorption cooling cycles for alternative adsorbent/adsorbate pairs working at partial vacuum and pressurized conditions

“…Alternatively, for Chemviron/R134a, Fluka/R134a and Maxsorb II/R134a pairs, Dubinin-Astakhov equation (Eq. (2)) is employed therein to predict the adsorption isosteres [17]. For silica gel/water pair, the modified Freundlich (S-B-K) equation (Eq.…”