I am studying a type of air conditioning based on air drying with silica gel, in order to have dry air that, after saturation by injecting water, has the right temperature and humidity (say, 14 C and 100% humidity) to be fed to a conditioned room..
No cooling required by refrigeration. Het would be consumed to regenerate silica gel.
(My sensation is that the heat required to regenerate silica gel is lower than the heat consumed in power stations to produce the power required by a conventional air conditioner.)
dear professor, based on our internal references, 1400 BTU is required to desorb one pound of water on silica gel or alumina. but, in order to evaluate total heat of regeneration, you may add the above value with the energy to heat up metal wall and ceramic balls, too.
i think the same value is also provided in the gas conditioning and processing book.
based on my experience, temperature of 150 to 180 C is enough to regenerate silica gel in natural gas dehydration.
Thanks Dr. Tavan. It is a pity that 150-180 C are required for regeneration, what excludes the use of normal solar devices.
Anyway, 1400 BTU/lb is 780 kcal/kg of water, a little over the heat of vaporization. That looks very promising. In fact, air cooling by evaporation of water must be compared to the same cooling by a thermodynamic cycle, with a consumption of heat in a power station about 3 times higher.
Temperature of 150 to 180 C, is required to fully regenerate silica gel,
You may use MOF with 105 C of regeneration temperature.
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