X-Message-Number: 2095 Newsgroups: sci.cryonics From: (Perry E. Metzger) Subject: Re: Hidden Cost Message-ID: <> References: <> <> Date: Sun, 11 Apr 1993 17:24:01 GMT Brian Wowk <> writes: > My analysis of the operating costs of a mechanically >refrigerated Cold Room neglected something important. The back end of >the refrigerator will spew out 5.5 kilowatts of waste heat. This will >impose an additional load on the building air conditioning system. >Bearing in my that the new facility will likely be located in Arizona >or Nevada, this could add as much as 20% to the Cold Room operating >costs. The exact cost is diffult to compute because it will depend on >the type of air conditioner in the builing (roof mounted?, water >cooled?, etc.) In any case, it is something to consider. The right thing to do is to put the hot end of the refrigeration coils outside the building if possible -- not to shoot yourself in the foot by heating a room that you have to cool. Of course, you then face increased energy costs from an increased differential between the target temperature and the temperature outside the chamber, but at least you aren't facing the far greater inefficiencies of pumping heat twice. Perry -- Perry Metzger -- Laissez faire, laissez passer. Le monde va de lui meme. Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=2095