Passive control valve and system for regulating flow of fluid to a heat source in a computer processor system in response to the temperature of the source, and method
摘要
說明書
For ambient temperatures below approximately 55° F., the coolant fluid effluent discharged from main pump 203, having been pressurized to a level above the supercritical pressure for the coolant fluid working medium (e.g., CO2), is still in its liquid state because the coolant fluid or working medium is not above the associated working medium supercritical temperature. As previously mentioned, the supercritical point for CO2 is about 31.01° C. and about 72.9 bar. As the working medium flows through heat sources 3, it absorbs heat from the heat sources such that the working medium (preferably CO2) changes from its liquid state to its supercritical state. Accordingly, the state of the CO2 working medium at the outlet of the heat source 3 (or at the inlet 9 and in the chamber 17 of its control valve 1) is supercritical. Thus, the state of the working medium or coolant fluid entering a respective control valve 1 is supercritical. Because little or no heat transfer occurs in the control valve 1, the CO2 effluent or cooling fluid in the control valve would also be supercritical.
