Comprehensive Review on Adsorption Heat and Mass Exchange

The increase in energy consumption in world leads to serious environmental problems, especially global warming and resource depletion. So, in order to reduce such problems use of renewable energies, energy recovery and energy conservation are inevitable. At present, there are large quantities of low-temperature energy released to the environment such as industrial waste heat and solar energy. This can be utilized by transforming them to high-temperature energy. The process of adsorption is a reversible process by which a gas or liquid molecules are fixed onto a solid matrix, typically a surface or a porous material. When the molecules get stick to the voids, they lose some energy, so adsorption is exothermic. The reverse process is called desorption and it is endothermic. The concept of adsorption heat and mass exchange is used in thermochemical heat pump and chillers. This article presents the critical review of work carried out by research scholars in this upcoming area.