Design and development of self-circulating evaporative cooling system for 1600W transmitter

Cao, Rui; Ruan, Lin; Zhang, Peng; Guo, Siyuan; Dong, Hai-Hong

doi:10.1142/9789813109384_0025

Cited by 1 publication

(2 citation statements)

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“…If size requirements are less strict, a conventional fan with slightly higher fin dimensions can often satisfy the heat dissipation needs. 4. In design, it is necessary to consider the influence of fin spacing on heat transfer coefficient, especially the influence on the air pressure drop.…”

Section: Discussionmentioning

confidence: 99%

“…Several cooling methods, including forced air cooling [1], oil cooling, water cooling [2], and evaporative cooling, are employed to tackle this issue [3]. By using latent heat, the evaporative cooling technology [4] has the advantages of high heat exchange efficiency, good temperature stability and high insulation. Since the late 1950s, the self-circulating evaporative cooling technology was proposed by the Institute of Electrical Engineering of Chinese Academy of Sciences [5] innovatively for the stator winding of hydro-generators, for example, the 27, 28# units in the three gorges hydro-generator station.…”

Section: Introductionmentioning

confidence: 99%

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Design Optimization and Performance Evaluation of a Low-Pressure Drop Air-Cooled Condenser for Self-Circulating Evaporative Cooling Systems

Li¹,

Ruan²

2023

IJHT

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The self-circulating evaporative cooling technology, by using latent heat, solves the bottleneck problem of high heat flux dissipation of the power electronic devices. In selfcirculating system, the pressure drop of heat transfer fluid through each component needs to be minimized for the weak circulating power. Thus, the air-cooled condenser design must consider the pressure drop along the fluid flow. This paper presents the design flow and thermodynamic model of the air-cooled condenser, and the self-circulating test platform which features heat exchange capacity and pressure drop measurement. In view of the heat exchange capacity of 17 kW and the pressure drop limit below 500Pa, a new air-cooled condenser is constructed with design flow optimized parameters and verified through experiments. The results indicate that the pressure drop error between experimental and designed values was less than 16.6% for a heat dissipation rate over 17kW. After further discussion, it is concluded that a fluid-sided hydraulic diameter of 2.5-3mm provides an effective balance between heat exchange capacity and pressure drop. With the increase of air speed, the total heat transfer coefficient of the condenser increases dramatically while the fin spacing makes a greater increase in air pressure drop than in heat transfer coefficient.

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Section: Discussionmentioning

confidence: 99%