Patent ID: 7430878
Filing Date: 2008-10-07
Classification: F24F,F25B,Y02B

Abstract:
1. An air conditioning system for conditioning the space within an enclosure having an air-conditioning space at least one inlet opening and one outlet opening, the system comprising: first and second liquid/air heat exchangers each disposed in a housing having an air inlet and an air outlet; said first heat exchanger having an opening for receiving fresh air from the environment and for propelling the fresh air through said first heat exchanger to exchange heat with the liquid of said second liquid/air heat exchanger before it is entered into said enclosure; each of the first and second heat exchangers including: a housing having a liquid reservoir at its lower section and an evaporative media at its upper section; a dripping chamber between said reservoir and said evaporative media; liquid outlets disposed above the evaporative media; means for forcing air to enter said housing and form a counter-flow relative to the liquid flow exiting from the liquid outlets, means for propelling liquid from the reservoir to said liquid outlets, passageway for propelling conditioned air to the opening of said enclosure, and the second heat exchanger having an opening connectable to said outlet opening of the enclosure for receiving air from air-conditioned space of the enclosure and for propelling it through said second heat exchanger to exchange heat with the liquid before it is expelled into the atmosphere, wherein conduit means directly interconnect the reservoirs, and said evaporative media include at least one cross-fluted structure composed of multi-layered, corrugated cardboard sheets forming an array of inlet openings on a first side of said structure, and an array of outlet openings on a second side of said structure substantially opposite said first side, wherein said evaporative media has a Reynolds air flow number of less than 2000.