Multiphase pumped cooling system for data center thermal management
A system includes a cooling loop including a multi-phase pump disposed downstream of one or more cold plates to pump a two-phase coolant in a combined liquid and vapor state from the one or more cold plates to a condenser downstream of the multi-phase pump.
1 . A system comprising:
a cooling loop comprising a multi-phase pump disposed downstream of one or more cold plates to pump a two-phase coolant in a combined liquid and vapor state from the one or more cold plates to a condenser downstream of the multi-phase pump; and
a control valve positioned between a coolant reservoir and the one or more cold plates, wherein the two-phase coolant flows from the coolant reservoir to the control valve to the one or more cold plates.
2 . The system of claim 1 , wherein a temperature of the two-phase coolant that is to flow to the condenser is increased when pumped by the multi-phase pump.
3 . The system of claim 1 , wherein the control valve is downstream of the condenser and upstream of the one or more cold plates along a supply path, the control valve is to induce a pressure drop in the cooling loop.
4 . The system of claim 3 , wherein a subcooling of the two-phase coolant that is to flow to the one or more cold plates is reduced or eliminated and a temperature of the two-phase coolant that is to flow to the one or more cold plates is reduced responsive to the pressure drop that is to be induced by the control valve.
5 . The system of claim 3 , wherein the control valve is at least one of a pressure relief valve or an orifice, and wherein the control valve is configured to control at least one of a temperature or state of the two-phase coolant supplied to the one or more cold plates via the pressure drop.
6 . The system of claim 1 , wherein the condenser is to condense the two-phase coolant from the combined liquid and vapor state to a liquid state.
7 . The system of claim 1 , wherein the control valve is disposed downstream of the one or more cold plates and upstream of the condenser along a supply path to induce a pressure drop in the cooling loop.
8 . The system of claim 1 , wherein the coolant reservoir is positioned downstream of the condenser and upstream of the one or more cold plates along a supply path, and wherein the two-phase coolant flows from the condenser to the coolant reservoir and collects at the coolant reservoir before continuing along the supply path.
9 . The system of claim 1 , wherein the control valve is positioned downstream of the condenser and upstream of the one or more cold plates along a supply path.
10 . The system of claim 1 , wherein the multi-phase pump is positioned downstream of the one or more cold plates and upstream of the condenser along a return path, and wherein the multi-phase pump is configured to pump the two-phase coolant in a mixed state through the cooling loop.
11 . The system of claim 1 , wherein the multi-phase pump enables the system to function as a heat pump.
12 . The system of claim 1 , wherein the multi-phase pump is a two-screw pump configured to pump the two-phase coolant in both a liquid phase and vapor phase.
13 . A method comprising:
pumping a two-phase coolant in a cooling loop in a combined liquid and vapor state using a multi-phase pump from one or more cold plates upstream of the multi-phase pump to a condenser downstream of the multi-phase pump, wherein a control valve is positioned between a coolant reservoir and the one or more cold plates, and wherein the two-phase coolant flows from the coolant reservoir to the control valve to the one or more cold plates.
14 . The method of claim 13 , further comprising:
inducing a pressure drop in the cooling loop using the control valve downstream of the condenser and upstream of the one or more cold plates.