| Abstrakt: |
In recent decades, adsorption refrigeration systems (ARS) are becoming increasingly popular as one type of environmentally friendly refrigeration system that uses low-grade thermal energy. However, because of its low specific cooling power (SCP) and performance coefficient (COP) compared with the traditional refrigeration systems, it has not been widely commercialized. The present research reviews several methods for improving the SCP and COP of ARS. Several topics related to the performance improvement of the adsorption refrigeration system have been covered such as two-bed ARS, heat recovery, mass recovery, heat and mass recovery, and cascade ARS. This literature review can help the researchers to understand the performance improvement methods for the multi-bed ARS leading to; high COP, lower cost, and shorter charging and discharging cycles times for ARS. Based on the literature review, it can be concluded that raising the temperature of the regeneration and evaporation leads to raising the COP of ARS, whereas raising the condensation temperature lowers the COP. The COP of ARS was about 0.28, 0.26, and 0.25 for MCM-41, silica gel-RD, and silica gel-blue, respectively. The mass recovery cycle enhances the SCP and COP over the traditional cascade cycle. The COP decreases with the increase in the time of the mass recovery. Finally, the heat recovery cycle is suitable for air-conditioning applications. [ABSTRACT FROM AUTHOR] |
