Methods, systems, and apparatus to control a fluid provided to components in a fluid pump of a closed loop system

A fluid pump to pressurize a fluid in a closed loop system, the fluid pump comprising:

• a pump housing including a primary inlet, a secondary inlet, and an outlet;
• a recirculation transport bus fluidly coupled between the outlet and the secondary inlet, the recirculation transport bus including a first valve to control flow through the recirculation transport bus;
• and
• a bypass conduit fluidly coupled to the recirculation transport bus to circumvent a portion of the recirculation transport bus, the bypass conduit including a bypass circuit to move a fluid flow towards a supercritical state, wherein the fluid flow includes a portion of the pressurized fluid and the bypass circuit includes a pressure tank structured to store another portion of the pressurized fluid in at least a near-supercritical state.

A flow control system to provide a working fluid to a secondary flow network disposed within a fluid pump, the flow control system comprising:

• the fluid pump including the secondary flow network and a secondary inlet being an inlet to the secondary flow network;
• sensors to measure parameters of a fluid corresponding to a flow of the working fluid;
• a recirculation loop including the secondary flow network, the recirculation loop to provide a first flowpath;
• a bypass circuit fluidly coupled to the secondary inlet to provide a second flowpath;
• one or more valves to direct the working fluid to the first flowpath or the second flowpath;
• and
• a controller to control the one or more valves to direct the flow of the working fluid to the first flowpath or the second flowpath based on sensor data from the sensors, the sensor data indicative of a state of the working fluid,
• wherein the controller is configured to direct the working fluid to the first flowpath when the sensor data indicate that the working fluid is in or near a supercritical state.