Al2O3纳米流体对不同取向板式换热器换热及摩擦因数的实验分析

Prashant, Gurpreet Singh, T. Sarao
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引用次数: 9

摘要

通过实验研究了水基Al2O3纳米流体作为冷却剂在钎焊板式换热器中的传热特性和摩擦系数。在大多数研究中,板式换热器在水平或垂直条件下使用。板式换热器底板在(0、30、60、90)处保持倾斜。实验采用两种不同浓度的纳米流体(0.1和0.2 v/v%)进行。结果表明,随着雷诺数的增加,传热特性得到改善。研究表明,纳米流体在板式换热器中的传热率最高可达基流体的34%。从水平方向到垂直方向,传热率随雷诺数的增加而减小。当换热器底板与水平的倾斜角为30时,平均换热系数可降低10-15%。doi: 10.5829 / idosi.ije.2016.29.10a.16
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Experimental Analysis of Heat Transfer and Friction Factor in Plate Heat Exchanger with Different Orientations Using Al2O3 Nanofluids
Experimental investigations have been done to find out the heat transfer characteristics and friction factor of water based Al2O3 nanofluids as a coolant in brazed plate heat exchangers. In most of the studies plate heat exchangers are used in horizontal or vertical conditions. The base plate of the plate heat exchanger was kept inclined at (0, 30, 60, 90). The experimentation has been carried out with two different concentration of the nanofluids (0.1 and 0.2 v/v%). It was observed that the heat transfer characteristics improves with an increase in Reynolds number. It has been shown that nanofluids in a plate heat exchanger have a maximum of 34% heat transfer rate over the base fluid. It has been observed that from horizontal to vertical orientation heat transfer rate decreases with increase in Reynolds number. The average heat transfer coefficient has been found to reduce by 10-15% when the angle of inclination of base plate of heat exchanger i from horizontal is 30. doi: 10.5829/idosi.ije.2016.29.10a.16
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