Evaporation Cooling Technology

Read this posting.

Welcome. Also try a site search of "swamp cooler" as various aspects of these have been discussed on CR4 over the years (some of which may be helpful).

http://cr4.globalspec.com/search/cr4search?query=swamp+cooler&newSearch=new

Go to the IHS Standards Library and type "evaporative cooling" for standards.

Here are some trade organizations:

ashrae.org: Home

Plumbing - Heating - Cooling Contractors Association

Heating and Cooling Contractors Association (HACCA)

national association of heating and air conditioning

Tony: Have you looked at www.coolerado.com? If they are your competition, you may have a tough road ahead, at some point, although your typical swamp cooler is a much cheaper device.

You you found some other way around the high RH% on the output from a swamp cooler?

Lyn's suggestions are a great lead in for someone needing to get up to speed in HVAC.

Also this: if you have even one of the coolers from the suppliers, you should be able to read off the fan motor nameplate valuable information, and the lift pumps for the water are probably not much different as long as they are a canned motor that does not short out in the water. The switches basically turn on and off the water pump, and change the fan motor speed by switching winding sets, as I recall. Find out who the Chinese are making their units for (or who they started out making them for).

I went to ashrae website, contacted them, talked to an engineer who is putting together info for me, waiting for response. I looked at cool er ado website, looks like a combination peltier, hilsch evaporation cooler setup, ( maybe none of those ) . The web page says they don't have a residential rtu unit available, probably because on a commercial building the rtu is mounted on the roof, whereas the rtu for a house is mounted inside the structure. I saw an article where an inventor/engineer was working on a cooling device that looked like this: Swamp cooler connected to a venturi plenum, moist cool air flowed through a radiator in which cold air was pumped under pressure, water vapor would freeze onto cooling fins, intermittent heater would melt ice and return liquid to supply basin where there was an inlet for make up water, the air that flowed past radiator was chilled to approx 38 degrees ( not sure if this is economically feasible, and if there was makeup water then how much % of water vapor entered the structure) Competitor? No. I just want to service and repair equipment. Competition means multi millions of dollars needed and I haven't won power ball yet. Floats / Chinese still using lever, float ball, piston setup, Australians using magnetic water level sensor, same theory as automotive cmp Canned motor, you mean TENV, or TEAO, right ?

Tony: Coolerado does not use Peltier effect. It only uses a divided flow heat exchanger to (1) bring the working air to near the saturation point at near the inlet air temperature, while evaporating water from the film, and (2) chilled air releases its heat to the working air to evaporate water on opposite side of the film. This type of cooler can produce really cold air from really hot air, and does not add moisture to the chilled air. It will use up about as much water as the swamp cooler would by thermodynamic principles.

As to the other cooler you mentioned, there is work of compression of the incoming air, removal of heat from that air, then heat exchange with water to produce the ice, so it might not require nearly as much water, and could actually produce excess water to use for watering plants, etc. Driving air compressors is somewhat energy intensive, and requires maintenance.

James: Thank you for correcting me on the coolerado. May I ask a question ? I went to their web site and it said they used a new principle called " The M Cycle " , I went to Google to look up what an m cycle was and the only reference was a bicycle shop. Coolerado's site said a contractor approved by the company could have their tech's trained in installation and repair using modules, but only a contractor or dealer would have a password. Was there a paper released detailing the units operation ? I'm curious, how did you find out ? Are you an employee, under contract, have one installed at your work place, got one and took it apart ? I'm not trying to ask stupid questions on purpose. I'm just trying to be enlightened.

"M" cycle stands for "Maitsosenko" cycle, basically what I described in reference to the heat exchanger tech they are employing. This IMHO is a vastly superior tech to simple swamp cooling.

I do not have any formal connection with Coolerado, only I have been following their tech since its announcement several years ago. They even plan to have these on some larger gas turbine installations at some point, simply because the tech can be applied not only to intake cooling, but also to adding mass flow to the power section of the GT.