Performance of Humidifier & Dehumidifier for close water and open air system (CWOA) with circular solar collector of Humidification-Dehumidification process

Abstract

Humidifiers and dehumidifier are heat and mass exchanger devices. It is used to transfer energy by both heat
and mass simultaneously between two fluid streams at different temperatures and concentrations. Mass transferred will
occur through the fluid streams when they come in thermal contact or direct contact They can exchange energy
alternatively and intermittently where two fluid streams are flow through the same flow passages. The direct contact heat
and mass exchange may be liquid-vapor type or gas-liquid type. Heat and mass transfer are also depending on the flow
configuration. The air heated ,closed air cycle where the water in the humidifier cannot be cooled to a much lower
temperature .result as air is not saturated The closed-water and open-air (CWOA) cycle which is air heated ,the wet
bulb temperature is much lower and hence the water in the humidifier can be cooled to a much lower temperature. Also
in dehumidifier humidifier air cool which result in condensation and fresh water production achieve .Thus, one might
expect that the humidifier and dehumidifier effectiveness will influence the cycle performance, unlike in the closed air
cycle. From the literature survey have been found that no attempts done to improve the cycle performance by modifying
the humidifier as well as dehumidifier. Hence, the objective of this paper is to study of the thermodynamic behavior of
humidifier to propose novel method for high-performance