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首页> 外文期刊>Energy Conversion & Management >Experimental investigation of filled bed effect on the thermal performance of a wet cooling tower by using ZnO/water nanofluid
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Experimental investigation of filled bed effect on the thermal performance of a wet cooling tower by using ZnO/water nanofluid

机译：ZnO /水纳米流填充床对湿式冷却塔热性能影响的实验研究

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This study deals with an experimental investigation on the effect of different types of filled beds on the thermal performance of a wet cooling tower by using zinc oxide (ZnO)/water nanofluid. Different concentrations of ZnO/water nanofluid were prepared through two-step procedure by using pure water with electrical conductivity of 2 mu S/cm. First, by using ZnO/water nanofluid (0.08 wt%), effect of six different filled beds were investigated on the thermal performance of the cooling tower. Moreover, after each experiment the applied filled bed was reviewed in order to observe any aggregation or settlement of nanoparticles on the surfaces of the bed. It was found that applying metal reticular bed (Bed 1) is the best choice when ZnO/water nanofluid is used. In the other word Bed 1 results better thermal characteristics for cooling tower and less settlement of nanofluids. Then different concentrations of ZnO/water nanofluid in the range of 0.02-0.1 wt% is employed in the cooling tower by utilizing Bed 1. The results showed that by using nanofluids, cooling range, tower characteristic (TC) and effectiveness of cooling tower are enriched compared to water. For example, TC enhanced by 21.5% and 22.5% for ZnO/water nanofluid with concentration of 0.02 wt% and 0.05 wt%, respectively. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本研究通过使用氧化锌（ZnO）/水纳米流体对不同类型的填充床对湿式冷却塔热性能的影响进行实验研究。通过使用电导率为2μS/ cm的纯水通过两步过程制备了不同浓度的ZnO /水纳米流体。首先，通过使用ZnO /水纳米流体（0.08 wt％），研究了六个不同的填充床对冷却塔热性能的影响。此外，在每个实验之后，检查所施加的填充床以观察纳米颗粒在床表面上的任何聚集或沉降。发现使用ZnO /水纳米流体时，应用金属网状床（床1）是最佳选择。换句话说，床1可以为冷却塔提供更好的热特性，并减少纳米流体的沉降。然后利用床1在冷却塔中使用0.02-0.1 wt％范围内的不同浓度的ZnO /水纳米流体。结果表明，通过使用纳米流体，冷却范围，塔的特性（TC）和冷却塔的效率是：比水丰富。例如，浓度分别为0.02 wt％和0.05 wt％的ZnO /水纳米流体的TC分别提高了21.5％和22.5％。 （C）2016 Elsevier Ltd.保留所有权利。

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