Adjustable liquid cooling of electronic devices by variable speed cooling pumps

Abstract

A data center cooling system comprises a cooling loop through which a coolant is caused to flow to a plurality of electronic devices by a variable speed pump under control of a controller. Separate variable speed liquid and vapor pumps are provided in embodiments where the coolant is vaporized by the absorbed heat. In response to changing cooling requirements, the coolant flow rate is adjusted by varying the pump speeds, without reliance on a flow control valve. Cooling is thereby optimized while minimizing pump energy consumption. The cooling loop can be branched into flow paths, each of which can include a separately controlled isolation valve. A plurality of cooling loops can include dedicated, separately controlled variable speed pumps. The pumps can be controlled reactively according to temperature measurements, and/or predictively according to measured electrical current flows to the electronic devices and/or device workload predictions.

Dependencies are inferred from the claim text.