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首页> 外文期刊>International Journal of Innovative Research in Science, Engineering and Technology >Experimental Studies of Thermal Transport in Heat Transfer Fluids Using Infrared Thermography
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Experimental Studies of Thermal Transport in Heat Transfer Fluids Using Infrared Thermography

机译：红外热成像技术在传热流体中传热的实验研究

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The efficiency of the cooling system is critical in industrial sectors could damage the electrical equipments due to poor thermal conductivity. Nanofluids are novel class of fluids, prepared by dispersing the nanoparticles in liquids like water, ethylene glycol, oil and oleic acid etc., to increase the thermal conductivity of heated substrates. The liquid droplets are placed on the substrate and are heated to various levels, thereby hydrothermal waves are induced and it is observed in thin fluid layers. Using Infrared Thermography technique heat transfer, drop radius, drying of substrates and its wetting angle are measured. It is a non-contact, non-destructive test measurement technique which detects the emitted infrared radiation from the substrate above absolute zero according to black body radiation law. Three different metal oxide nanofluids (Copper oxide, Iron oxide and Aluminium oxide) were prepared and nanoparticles are characterized using SEM, AFM and FT-IR. Using TGA and DTA, thermal stability and weight loss of the nanoparticles are studied. Copper Oxide nano fluid shows reduced weight loss, enhanced thermal stability and thermal conductivity when compared to other fluids.
机译：冷却系统的效率在工业领域至关重要，因为导热性差可能会损坏电气设备。纳米流体是一类新型的流体，它是通过将纳米颗粒分散在水，乙二醇，油和油酸等液体中以增加加热的基材的导热性而制备的。液滴被放置在基板上并被加热到各种水平，从而引起水热波并在薄的流体层中观察到。使用红外热成像技术，可以测量热传递，液滴半径，基材干燥及其润湿角度。这是一种非接触，非破坏性的测试测量技术，可根据黑体辐射定律检测从基材发射的绝对零以上的红外辐射。制备了三种不同的金属氧化物纳米流体（氧化铜，氧化铁和氧化铝），并使用SEM，AFM和FT-IR对纳米粒子进行了表征。使用TGA和DTA，研究了纳米颗粒的热稳定性和重量损失。与其他流体相比，氧化铜纳米流体显示出减少的重量损失，增强的热稳定性和导热性。

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