Thermally determining flow and/or heat load distribution in parallel paths

A non-transitory computer readable medium comprising computer executable instructions which when executed by a computer cause the computer to perform the method of:

• obtaining calibration data for a plurality of sub-components in said heat transfer assembly, wherein said calibration data comprises at least one indication of coolant flow rate through each of said plurality of sub-components for a given surface temperature delta of each of said plurality of sub-components and a given heat load into each of said plurality of sub-components;
• obtaining a coolant flow distribution of a system level coolant flow among a plurality of flow paths in said heat transfer assembly using a measured surface temperature delta of each of said plurality of sub-components, each flow path of said plurality of flow paths including at least one of said plurality of sub-components, wherein said plurality of sub-components have similar heat loads;
• determining a measured surface temperature delta of each of said plurality of sub-components with different heat loads;
• determining a heat load distribution in said heat transfer assembly between each of said respective flow paths using said calibration data, said coolant flow distribution, and said measured surface temperature delta of each of said plurality of sub-components;
• and
• adjusting said coolant flow distribution based on said heat load distribution.