Numerical modelling of a hybrid vapor compression refrigeration assisted closed loop liquid cooling system for high-performance computing systems

This study presents a numerical model of a miniature vapor compression refrigeration (VCR) system that is used to cool liquid coolant in a secondary pumped loop that is deployed to cool a high-powered CPU. The model employs a physical approach and iterative algorithms to solve coupled non-linear equations for both the refrigeration cycle and pumped single phase cooling loop. Experimental tests were conducted to verify the model using an in-house test facility. This paper outlines the modelling and solution approaches taken, discusses the efficacy of the model in terms of agreement with experimental measurements, and highlights the utility of the model as a design tool for cooling high powered electronics.