North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: rack power question
Paul Vixie wrote: The ones I have are MDPE (Medium Density Polyethylene) and I haven't understood that the plastic would have corrosive features. Obviously it can come down to regulation depending on what you use as a cooling agent but water is very effective if there is no fear of freezing (I use ethanol for that reason). The whole system is closed circuit, I'm not pumping water out of the ground but circulating the ethanol in the vertical ground piping of approximately 360 meters. The amount of slurry that came out of the hole was in order of 5-6 cubic meters. Cannot remember exactly what the individual parts cost but the total investment was less than $10k. (drilling, piping, circulation, air chiller, fluids, etc.) for a system with somewhat over 4kW of cooling capacity. (I'm limited by the airflow, not by the ground hole if the calculations prove correct) Pete
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