Abstract
In this work, a kind of uni-piece nickel-based superalloy/sodium heat pipe is proposed. Five models of high temperature heat pipe were prepared using GH3044 and GH4099 nickel-based superalloys. And their startup performance and ablation resistance were investigated by quartz lamp calorifier radiation and wind tunnel tests, respectively. It is found that the amount of charging sodium affects the startup performance of heat pipes apparently. No startup phenomenon was found for insufficient sodium charged model. In contrast, the models charged with sufficient sodium startup successfully, displaying a uniform temperature distribution. During wind tunnel test, the corresponding models experienced a shorter startup time than that during quartz lamp heating. GH4099/sodium heat pipe shows excellent ablation resistance, being better than that of GH3044/sodium heat pipe. Therefore, it is proposed that this kind of heat pipe has a potential application in thermal protection system of hypersonic cruise vehicles.
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This work is supported by National Natural Sciences Foundation of China under Grant No.11172284.
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Lu, Q., Han, H., Hu, L. et al. Preparation and testing of nickel-based superalloy/sodium heat pipes. Heat Mass Transfer 53, 3391–3397 (2017). https://doi.org/10.1007/s00231-017-2105-5
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DOI: https://doi.org/10.1007/s00231-017-2105-5