کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
648540 | 1457200 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Activated carbon + HFC 134a based two stage thermal compression adsorption refrigeration using low grade thermal energy sources Activated carbon + HFC 134a based two stage thermal compression adsorption refrigeration using low grade thermal energy sources](/preview/png/648540.png)
A thermodynamic analysis is presented for the two stage thermal compression process for an adsorption refrigeration cycle with HFC-134a as the working fluid and activated carbon as the adsorbent. Three specimens of varying achievable packing densities were evaluated. The influence of evaporating, condensing/adsorption and desorption temperatures was assessed through three performance indicators, namely, the uptake efficiency, the coefficient of performance and the exergetic efficiency. Conditions under which a two stage thermal compression process performs better than the single stage unit are identified. It is concluded that two stage thermal compression will be a viable proposition when the heat source temperature is low or when adsorption characteristics are weak or when adequate packing densities are difficult to realize.
Journal: Applied Thermal Engineering - Volume 29, Issues 11–12, August 2009, Pages 2257–2264