What is the Delta GoCool-1000?
Delta publishes this coolant distribution unit at two duty points rather than one, which makes it unusually easy to compare. It reaches 1,000 kW at a 5 degree Celsius approach with 1,000 liters per minute in the server loop, or 750 kW at a 4 degree approach with 1,125 liters per minute. The primary side carries 1,200 liters per minute with water entering at 17 degrees. The pairing shows the trade: a narrower approach costs flow and yields less heat from the same box. Delta assumes a secondary mix of 25 percent propylene glycol, which is not the same fluid as plain water and carries less heat for the same flow. Plumbing is stainless steel, the secondary filter is 50 micron with an option to upgrade to 25, and it can be swapped while running. External pressure drop is 360 kPa. The cabinet is 900 by 1,360 by 2,300 mm with 4 inch Victaulic connections on both sides, and dual power feeds with an automatic transfer switch are standard. Delta does not publish the electrical load, the noise level, or the capacity with one pump unavailable. Ask for a selection at the site's own inlet temperature, since the published figures assume 17 degree primary water that many warm-water halls will not supply.