The analysis of optimal heat discard parameters in the combined cooling system of radio-electronic equipment
Abstract
The paper presents the mathematical model of the combined cooling system and calculation methods of optimal heat discard parameters of radio-electronic equipment as compared to standard cooling methods in high-power radiolocation stations. The optimization problem is solved to determine the control actions: the flow rate of cooling air in the air cooling system and the coolant in the liquid cooling system. The total cooling costs are considered as the main function, they consist of the costs of the cooling air and coolant circulation and the costs of cooling the heat carriers themselves. Restrictions are the conditions of air and liquid cooling thermal balance and maintaining the set temperature in the space where the radio-electronic equipment operates. The optimization problem in a limited area is solved by the bitwise search method. Air and circulating fluid cooling is carried out in the devices with free cooling which are located outside the radio-electronic system. The parameters of thermal modes of operation of these devices are given in the form of tables which are processed by means of regression analysis methods to solve the optimization problem. The air cooling system uses heat pipes with radiators which ensure efficient removal and dissipation of heat. Heat removal from radiators occurs in the turbulent mode, as the analysis shows. In conclusion a comparative analysis of different types of cooling systems energy consumption is carried out, depending on the required heat power and outside air temperature.
- Publication:
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Materials Science and Engineering Conference Series
- Pub Date:
- April 2019
- DOI:
- 10.1088/1757-899X/516/1/012036
- Bibcode:
- 2019MS&E..516a2036R