Experimental study of Dehumidifier for close water and open air (CWOA) system using Circular solar collector , Humidification–Dehumidification process

Abstract

Coastal area where clean drinking water availability is measured problem, which insist to innovate cheep,
decentralized small-scale water production. The geographical conditions of vadodara (22.00N, 72.10E ),and kachh,
Gujarat are best suitable for humidification-dehumidification (HDH) technique based on closed-water, open-air cycle
where air heated system is used. Dehumidifiers is heat exchanger in which heat exchange is takes places between two
fluids i.e. hot and cold that are at different temperatures. The heat exchange in the heat exchanger may be in the form of
latent heat or sensible heat or combination of both. There are different types of heat exchangers available as
dehumidifiers for HDH applications vary but they have required strength to withstand corrosive nature of seawater ,
there for frames, collecting plates, fins are made of aluminum. In addition, special attention was exercised to avoid
leakage of distillate water. The HDH concept are also reviewed and compared. Further, novel proposals for
improvement of the HDH cycle are outlined. The surprising result is that dehumidifier effectiveness also has an
insignificant influence on system productivity, which has very important implications since the cost of the dehumidifier
(air cooled heat exchanger) is a major part of the system’s cost.