The effects of ejector adiabatic absorber on heat and mass transfer of binary nanofluid with heat transfer additives
The effects of ejector adiabatic absorber on heat and mass transfer of binary nanofluid with heat transfer additives
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喷射绝热吸收器对含传热添加剂的二元纳米流体传热传质的影响
DOI：
10.1007/s42247-021-00287-2
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发表时间：
2021
影响因子：
3.8
通讯作者：
Muhammad U
中科院分区：
文献类型：
--
作者：
Muhammad U
研究了喷射绝热吸收器对含传热添加剂（2-乙基-1-己醇和阿拉伯胶）的二元纳米流体传热传质的影响。在这种情况下，由于对用于太阳能应用的吸收式传热工作流体的兴趣越来越大，提出了H2O/溴化锂-氧化铝纳米流体。设计了一个实验装置-喷射器实验台-来研究由喷射器绝热吸收器夹带的制冷剂蒸汽质量流的吸收、热量和质量传递速率。研究在不同的溶液质量流量（0.051至0.17 kg/s）下进行，制备了三种样品溶液，包括纯LiBr溶液、不含传热添加剂的LiBr-氧化铝纳米流体和含传热添加剂的LiBr-氧化铝纳米流体。报道了三种样品的吸收速率、传质系数、传热速率和传热系数。另一方面，记录了在0.085 kg/s的合适流速下，由于添加氧化铝而不添加和添加传热添加剂而导致的所有参数的百分比增强。吸收率的增强率分别为25%和96%，传质系数的增强率分别为20%和82%，传热率的增强率分别为85%和183%，传热系数的增强率分别为72%和156%。物质质量平衡分析表明，在喷射器中的质量流入等于从喷射器的质量流出，表明夹带的制冷剂蒸气的完全吸收，超过该吸收可以由于浓度而发生降膜吸收。这篇文章还提出了实验证据的能力，喷射器作为强绝热吸收，热量和质量传递组件，这是早期报道的使用数值模型。
This paper presents experimental results on the study of the effects of ejector adiabatic absorber on heat and mass transfer of binary nanofluid with heat transfer additives (2-ethyl-1-hexanol and gum Arabic). In this case, H2O/lithium bromide-alumina nanofluid was suggested due to a growing interest in absorption heat transfer working fluid for solar energy application. An experimental setup — ejector test rig — was designed to study the absorption, heat, and mass transfer rate as a result of refrigerant vapour mass flow entrained by the ejector adiabatic absorber. The study was carried out at different solution mass flowrate (0.051 to 0.17 kg/s) with three prepared sample solutions, which include pure LiBr solution, LiBr-Alumina nanofluid without heat transfer additives, and LiBr-Alumina nanofluid with heat transfer additives. The absorption rate, mass transfer coefficient, heat transfer rate, and heat transfer coefficient for the three samples were reported. On the other hand, the percentage enhancements for all the parameters — at a suitable flow rate of 0.085 kg/s — due to the addition of alumina without and with heat transfer additives were recorded. The absorption rate enhancements were 25% and 96%, the enhancement rates of mass transfer coefficient recorded were 20% and 82%, the heat transfer rate enhancements were 85% and 183%, and the heat transfer coefficient enhancements obtained were 72% and 156% with addition of alumina nanoparticles only and alumina nanoparticles with heat transfer additives respectively. Material mass balance analysis suggests that mass inflow in the ejector equals to the mass outflow from the ejector, indicating a complete absorption of the entrained refrigerant vapour beyond which falling film absorption can occur due to concentration. This article also presents experimental evidence of the capability of ejector as strong adiabatic absorber, heat, and mass transfer component, which were earlier reported using numerical models.
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影响因子：
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DOI：
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发表时间：
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影响因子：
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DOI：
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发表时间：
2014-06-24
期刊：
Sensors (Basel, Switzerland)
影响因子：
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作者：
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通讯作者：
Lee D