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首页> 外文期刊>Applied thermal engineering: Design, processes, equipment, economics >Experimental study on the influence of nanoparticle PCM slurry for high temperature on convective heat transfer and energetic performance in a circular tube under imposed heat flux
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Experimental study on the influence of nanoparticle PCM slurry for high temperature on convective heat transfer and energetic performance in a circular tube under imposed heat flux

机译：高温下纳米PCM相变浆料对圆管内对流换热及高能性能影响的实验研究

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Nanoparticle PCM (Phase Change Material) slurry is a dispersion where the PCM is dispersed in fluid. Compared to fluid, these nanofluids have a higher heat capacity during the phase change and a possible enhancement, as a result of this phase change, in the heat transfer phenomenon. To appreciate the merits, in terms of energy, an experimental study has been carried out with fluid based on THERMINOL 66 (T66) with NaOH KOH nanoparticles, flowing inside a horizontal tube. Pressure drop and heat transfer coefficients have been measured at different inlet temperatures (150 degrees C < Ti < 300 degrees C) and at various flow rates (2500 < Re < 25 000). The Reynolds and Nusselt numbers have been determined using thermal conductivity and viscosity measured in the same conditions as those in tests. An energy Performance Evaluation Criterion (PEC) has been defined: it is the ratio of heat transfer rate at fixed pumping power. The results obtained show an improvement of this energetic criterion at low velocity compared to the base fluid. (C) 2015 Elsevier Ltd. All rights reserved.
机译：纳米粒子PCM（相变材料）浆液是PCM分散在流体中的分散体。与流体相比，这些纳米流体在相变期间具有更高的热容量，并且由于该相变而可能增强传热现象。为了了解其优点，就能量而言，已对基于THERMINOL 66（T66）的液体和NaOH KOH纳米粒子在水平管内流动进行了实验研究。在不同的入口温度（150℃

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