Review of Fluidized Bed Technology Application for Adsorption Cooling and Desalination Systems

Abstract

Adsorption technology utilizes low-temperature renewable and waste heat sources for cost-effective and environmentally friendly cooling and water desalination systems. However, the problem with existing adsorption refrigerators is the low COP. This is caused by poor heat and mass transfer in existing packed bed designs. The solution to this problem lies in the use of fluidized bed technology, which enhances heat and mass transfer mechanisms. Various approaches to the construction and operation of adsorption systems with a fluidized bed of adsorbent can be found in the literature; hence, the aim of the work is to analyze the existing applications of a fluidized bed in adsorption refrigerators and other systems utilizing sorption beds. There are many methods for improving the energy efficiency of adsorption refrigerators. However, the literature suggests that fluidized bed systems have the potential to significantly improve the energy efficiency of adsorption cooling and desalination systems. Based on the review, it was concluded that using fluidization technology in adsorption cooling and desalination systems can be beneficial and represents significant potential for future research.

Review of Micro- and Nanobubble Technologies: Advancements in Theory and Applications and Perspectives on Adsorption Cooling and Desalination Systems

“…Despite the increased thermal diffusivities of the prepared modified adsorption beds, the addition of CNTs to SG resulted in a decrease in the sorption capacity. Another interesting option is the use of fluidization adsorption beds [79][80][81][82][83][84][85]. This is a new concept, in which fluidized adsorption beds replace packed beds in conventional adsorption chillers.…”

Implementation of Fluidized Bed Concept to Improve Heat Transfer in Ecological Adsorption Cooling and Desalination Systems

“…Only a few experimental reports are currently available in the literature on improving the energy efficiency of adsorption chillers using fluidized bed technology [53]. The influence of fluidizing gas velocities and adsorbent particle diameters was discussed in [54].…”