Ceramic AWG

Last crawled date: 1 year, 11 months ago

Based on the principles of thermodynamics affecting a liquid contained in a vessel made of porous ceramic material whose walls exudation takes contact with dry air an liberates thermal energy via its evaporation and as a result a cooling of the contained liquid is produced.

See this principle applied in A) “Pot in pot" food refrigeration system in Nigeria (yr 2000 Rolex prize award by Mohammed Bah Abba) B) Tipical southern spanish round in-clay cooler water vessel called "botijo". In both cases, 10 to 15º centigrades thermal shock is possible with no aditional energy to the one involved in the natural evaporation process is needed On this basis my propoussal is as follows:

.- Main ceramic container with a central chamber filled with cooling water wich in turn cools a submerged metal coil with an inner NBD material swirl where air cools down as spins through it and inforces the condensation. Air pressure must be tuned accordingly to the atmospheric conditions in order to find a balance to keep the thermal shock running at its best.
.- Lower decantation chamber, where dry air and water split and give an extra efficiency factor to the evaporation process driving this dry air to its only exits rubbing the wet walls on its way out.
.- Solar panels empower an upper vent and extra energy can be stored in bateries to mantain the process at night.
.- NBD material area is estimated in 9,46 m2 on the secondary coil herewith designed, which in conjuction with the optimum pressure air level inside the system and its resultant down drop temperature due to cooling water, can become in a resultant water production figure not less than 20 lts.\hr at 70% Humidity air conditions defined in this challenge. Secondary coil can be replaced by tubular filters made out of NBD stuf, when manufacturing the first one, might be a problem.
.- System must stop when a certain level of water is achieved so drain process with no disturbing air pressuere can take place through an electro-valve (switching off vent and water release) which is not present at the drawings.
.- System would consume a very low average of the produced water, estimated less than 10%. Cooling system refill is necessary also for the sake of efficiency keeping at the minimmum level the volume of air contained in the cooling chamber. A self-refilling procedure can be also contemplated, but at further stages.
.- Math fuctionality ecuation of cooling through evaporation can be checked at Chemical Engineering Education vol.29th yr 1995 publication.
.- Clay artisians are present in all continents, so local economy can be supported in the production process anywhere. Combination of technology and tradition can be here taken into account as a social-economics value.