I have a client that needs some cooling. He has 2 full sized racks filled with equipment in a pretty small closet (6’X30”). The total heat load for both racks is about 20,000 BTU per hour (fully rated). A lot of the heat comes from satellite receivers (approximately 25-30) which need to be on constantly and are very sensitive to overheating. Initially we had a small self contained crack unit in there (about 1/2 ton), but it wasn’t up to the 24/7 task and failed after 7-8 months. We have a feed from his main HVAC unit (which is water cooled, but not chilled water) of about 150 CFM, but the doors need to stay open on the closet for the escape of the warm air. This closet is located in a guest bedroom, and the owner would like to be able to keep the door closed all the time. We have done some research for some water cooled units, that we could tie into the HVAC system, but they are all too large to fit into the closet. If we were to remove the top of the closet out, we could have about 18” of clearance above the racks. Does anyone have any ideas on how we could properly cool this beast? Does anyone have any experience with a situation like this? We cannot make the feed from the HVAC any larger as it is also handling the HVAC for the guest bedroom, and becomes quite cold in there already while it is attempting to cool the closet. We have also installed a Crestron thermostat in the closet to monitor the temperature and shut down vital components in the event of an overheat situation. Thanks in advance for any help…

use a properly sized self contained two piece cooling unit. do a google search on a two piece cooling solution (ductless coolers). There are a few manufacturer’s out there. Samsung we use alot of. (Fijutsu ductless coolers) These units are designed to run 24/7 (if your in a cold climate make sure you get the correct model) These units are effective, energy efficient and reasonably quiet.

Our System 1 can remove over 100 CFM of hot air from the closet, if that’s all you need to do now to keep the client happy. See it at http://www.activethermal.com.