Water desalination using heat pumps

Increase of COP for heat transformer in water purification systems. Part II – Without increasing heat source temperature

“…Experimental results for both compression and absorption heat pump systems were satisfactory with energy recycling, the distilled water quality was similar to that obtained by a laboratory scale electrical distiller [3,12]. In a previous work published by the authors, (Part I), the energy recycled in an AHTWP was used to increase the temperature of the waste heat source.…”

Experimental study for hybrid humidification–dehumidification water desalination and air conditioning system

“…Aly et al [2] studied theoretically and experimentally the performance of the mechanical vapor compression (MVC) desalination system. Siqueiros and Holland [3] proposed desalination systems operated by heat pumps (mechanical vapor compression and/or absorption machines) as a compact and less cost structure that has first been used for the dry areas in north of Mexico. Additionally, the reasonable economic potential is given as compared to reverse osmosis technology.…”

Purification of seawater using absorption heat transformers with water-(LiBr+LiI+LiNO3+LiCl) and low temperature heat sources

“…Among the numerous options to improve the energy efficiency of desalination plants stands out the absorption heat pump that can reduce in a significant way the required global energy consumption and then increase the global energy efficiency of the process [1][2][3]. Heat transformer is one type of heat pumps of great interest from the energy point of view.…”