Heat Exchangers

I am looking into more efficient ways to get rid of heat. Has anybody tried or is using a heat exchanger (air to water)?

I am struggling to find stats on how much air can be cooled and by how much any help or pointers would be greatly appreciated.

Bump....... No Takers.

Bumpety McBump Bump.

Last bump to see if any of you peeps have tried or know of air to water heat transfer (exchangers).

I don't think you will get a lot of takers on this, because heat to water systems are not that efficient versus sucking the air out of the room with fans. Look at the costs of these systems too. They are around the same price as AC units with same operating power reqs. On top of that you are going to have even more costs on water consumption. What happens to the water once it's heated? You have to replace that with cooler water? I'd be very curious on seeing such a system in ops, but I don't for-see anyone popping up here showing off this "pride and joy".

A better approach to this problem might be to post your current specs and room environmental data and take it from there.
Good luck.

it would be the same way as it works in a car, use a header tank ( a very large one) to give you a big volume of water run an outlet through a pump to your heat exchanger and back to the tank

have your ducted air flowing through the cooled heat exchanger , i have been thinking of this too but i think i have some other ideas i can use around my house that means i wont need to go the heat exchanger route

My rig is spot on, everything within parameters but woud like to step things up a bit with regards to production. Heat becomes an issue trying to exhaust from 5kw of light (currently running 3 x 600). Our water is not metered so constant fresh cold suppy for free, warm water straight down the drain. I am not looking to dispose all heat of 5kw via heat exchange but if I could remove 50% and the rest with my current set up then I woud be happy.

I am struggling to find or understand the efficiency of heat exchangers and don't want to spend cash on something that don't give me what i need.

heat exchangers are hugely more efficient than any other type , and dont require anywhere near as much power as ac units since you are only using a water pump , you could offcourse put your tank of water in some sort of refridgerator or in a seperate room or even outside like some commercial coolers do that are mounted on a wall with a heat exchanger outside to dissipate the heat

cluelessuk said:

heat exchangers are hugely more efficient than any other type , and dont require anywhere near as much power as ac units since you are only using a water pump , you could offcourse put your tank of water in some sort of refridgerator or in a seperate room or even outside like some commercial coolers do that are mounted on a wall with a heat exchanger outside to dissipate the heat

Click to expand...

I'm sorry man but I just don't see it. I would love to see your hypothetical system with numbers. I don't know how these systems totally work, but If you include the cost of water, I would be surprised if it is truly more efficient. If using these systems were so much better, why do we not see them in use? I've yet to see anyone on here with such said system. I would need to see the numbers on each component required in this situation you speak of. Including the cost of water. Since MrMeanGrean has free cold water, then yea, this might be a better option. I saw on here way back that made a radiator out of copper pipe and ran chilled water through that with a fan blowing on that. That really was impressive.

did you read my post ? i said you fill a header tank , a big household tank is around 50 gallons , put in some corrosion inhibitor and that water will last years in a sealed system

im not about to bust out the figures as i dont know all the values , but since its the same principle used in cars boilers radiators around your home and instant water heaters then suffice to say they are very efficent of tranferring heat to water , and removing that water is achieved by the pump and pipework to wherever you have another heat exchanger for best results

but i done a similar but much smaller scale system years ago to watercooler my pc's cpu using a central heating pump in the loft and 4 coils of 10mm copper coiled up in the cold water storage tank , my temps were always below my rooms ambient temp this caused some condensation problems and i had to go to alot of effort to insulate my cpu and motherboard so as not to cause a short

that thing u saw way back ? yeh thats a heat exchanger ! , if you go the chiller route as i said it will get more expensive obviously


as for numbers e.g. prices , go check yourself on a tank plumbing and a pump , then find a suitable heat exchanger to do it , little research will answerthe finer points

i know myself what i would do and it would take a fair bit of research if i do decide to go down this route i will post it up


but i have decided to run a 6 inch soil pipe from my growroom upstairs down through the walk in cupboard in my bedroom and into the center of under my house, from there the exhausted air can disperse around under the floors

I too have been trying to come up with a good design for a basic cold water heat exchanger, which brought me here.
I have used a air pump(actually a air amplifier) on hydrostatic test stands called the maxpro maximator. It was made to put air pressure behind water in a vessel to test for leaks. I saw one pressure tested at 30KPSI in my shop once. the reason I bring it up is: compressed air is cold, you could exchange heat thru copper tubes with pressurized air. But, air compressors are very noisy. this maximator pump is so quiet plus in conjunction with a small car lighter style air compressor that you could use it for stealth and be very efficient. I guess some drawings and more planning would be in order.