Abstract:
As the limited source of Non-renewable energy it is necessary of conserve the energy till
new researches and achievements towards the conservation of our system to Renewable
sources. In many parts of India, hot and humid conditions are present. In such an
environment, the dry air is essential for domestic and industrial purposes.
The dry air is produced by using the simple vapour compression system but it leads to
environmental issues like ODP, Global warming, and Green house effect. In hot and
humid condition we required low relative humidity (50 to 60%) during cooling and
dehumidification process. But during cooling and dehumidification process in
conventional air conditioning system the temperature of air will goes down below dew
point temperature and that leads the issue of the reheating process that again leads
electrical energy consumption.
It is pertinent to find the technologies which consume less electrical energy and more
environmentally. The simple and effective way of producing the dry air is based on the
chemical dehumidification (desiccant system). Desiccant based air conditioning system is
such which can use solar energy or waste heat for reheating and which saves energy.
There are two types of desiccants are used for dehumidification purpose. Solid desiccant
and liquid desiccant. The liquid desiccant based air conditioning system is new
technology and need lot of money for making such a cooling system.
There is one way to conserve energy is based on the solid desiccant system. The various
solid desiccants like silica gel, activated alumina, activated charcoal, molecular sieve and
polymer desiccant etc are used to produce the dry air. This method has low operating and
maintenance cost and is environment friendly. Also, these desiccants perform very well in
high humid regions and are easily regenerated in tropical conditions of India.
In this project I am experimentally investigating the adsorption performance of the
desiccant material at various air flow rate.
