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根据碟式太阳能热管接收器的工作情况,开发设计了加工简便、成本较低的组合式吸液芯高温热管.对该热管建立了热阻模型,通过试验验证热阻模型的可靠性,并从温度、热阻和当量导热系数3方面与三角沟槽/金属丝网吸液芯热管进行比较,分析了热管瞬时传热性能.在相同的冷却工况下,与三角沟槽/金属丝网吸液芯热管相比,组合式吸液芯热阻稳定且较小,当量导热系数较大.因此,组合式吸液芯高温热管较三角沟槽/金属丝网吸液芯热管传热性能优良,可较好地应用于碟式太阳能接收器.
According to the working condition of the dish solar heat pipe receiver, a combined liquid-absorbent high-temperature heat pipe with simple processing and low cost is developed and designed.The thermal resistance model is established for the heat pipe, and the reliability of the heat resistance model is verified through experiments Temperature, thermal resistance and the equivalent thermal conductivity of the triangular groove / wire mesh wick heat pipe compared to analyze the instantaneous heat transfer performance of the heat pipe in the same cooling conditions, and the triangular groove / wire mesh suction Compared with the liquid-core heat pipe, the combined liquid-sucking wick has stable and smaller thermal resistance and larger equivalent thermal conductivity, therefore, the combined liquid-sucking high-temperature heat pipe has better heat transfer performance than the triangular groove / wire mesh wick heat pipe, Can be better used in dish solar receivers.