Authors

Experimental study and modeling of a microprocessor cooling system based on a refrigerating machine

DOI: 10.17586/1606-4313-2025-24-3-11-21
UDC 621.574

Experimental study and modeling of a microprocessor cooling system based on a refrigerating machine

Andreev Alexander I., Semenov Alexander E.

For citation: Andreev A.I., Semenov A.E. Experimental study and modeling of a microprocessor cooling system based on a refrigerating machine. Journal of International Academy of Refrigeration. 2025. No 3. p. 11-21. DOI: 10.17586/1606-4313-2025-24-3-11-21

Abstract
This paper examines the efficiency for microprocessor-liquid cooling system-refrigerating machine system and maintaining the optimal temperature of electronic components. For the purpose, experiments were conducted on the microprocessor cooling system with a built-in refrigerating machine (mini-chiller) containing a mini-compressor and microchannel heat exchangers. An experiment was conducted with control of all the main parameters of the refrigerating machine and microprocessor. Based on the obtained data, a mathematical model was built describing the change in the cooling system power and the operating parameters of the refrigerating machine and allows calculating the temperatures and flow rates of the coolant, as well as obtaining the most efficient modes for the cooling system. Data were obtained for the heat transfer coefficients in the microchannel condenser and evaporator during operation of the refrigerating machine. A mathematical model of the refrigerating machine was built. Experimental data were obtained during the operation of the refrigeration unit in the microprocessor cooling system. A mathematical model of the cooling system based on the refrigerating machine was built. The mathematical models allow designing and simulating a cooling system for processors with high computing power and high heat generation. The use of a refrigerating machine has high prospects, since even with small dimensions of the refrigerating machine it has a high cooling capacity compared to standard liquid cooling systems. Thus, with a maximum heat flow from the processor of about 150-200 W, the refrigeration unit, in this study, has a cooling capacity of about 220 W at a boiling temperature of about 10 °C and a condensation temperature of 40 °C, which allows us to recommend water cooling systems with built-in refrigerating machines for high-performance computers and small workstations.

Keywords: microprocessor, refrigerating machine, microchannel heat exchanger, liquid cooling system, mathematical model, heat transfer, heat transmission, power consumption.

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