I've got a problem with an air conditioning installation. I'm not in the business of air conditioning, and our supplier has been contacted and will be along next week. However, please read my story and see if it makes sense . Thank you for any help you can offer.
So, I have about 15kw of computer equipment being cooled by an air conditioning system with two condensers. (Just to check, they look a bit like http://www.mustknowhow.com/wp-conten...singUnit02.jpg , with a fan exhausting hot air on the front, and a radiator on the back). The setup is running correctly and was serviced recently. If it matters at all, the install is in the UK, where peak daytime temperatures don't go above 30oC much.
However, with recent hot weather, the computer equipment has been overheating (aircon is set to 18oC, but it's actually giving out 24oC).
Looking at how the condensers were installed, they are installed in a room, under a road. The room is 4m wide x 4m long x 2m high, with a standard door sized opening to the open air. Two condensers sit on the ground in the middle of the room. The only ventilation is the door sized opening. The room gets very hot as you might expect; it's currently 40oC (104F) in there.
I think the same air is remaining in the room, and being circulated over and over through the condensers. Thus, the air is getting very hot, and they work less efficiently. Is this likely to be correct?
If this is correct, it doesn't seem efficient. It would seem easier to cool using colder air, rather than hotter air. We've contacted our air conditioning supplier to see about moving the condensers outside (which is possible, there is space). As far as I am aware, they were only located inside, due to cosmetic reasons.
I'm on the search for a quick fix, until the condensers are moved, or otherwise our supplier comes to visit.
In the short term, I was considering getting some flexible ducting (e.g. http://www.ductstore.co.uk/acatalog/..._Flexible.html). Then, duct taping this to the exhaust grille of each condenser, and putting the other end of the ducting outside. This way (I hope), the heat would be dumped outside, instead of in the room.
Is this idea likely to work, or be effective?
Does anyone have any other ideas?
thank you for reading ,