In present work, experimental studies were carried out in a plate heat exchanger to investigate heat transfer characteristics such as heat transfer rate, overall heat transfer coefficient, convective heat transfer coefficient, effectiveness and pumping power for a 35:65 (v/v) ratio ethylene glycol and water mixture based Al₂O₃ nanofluid in weight concentration range of 0.2% to 2%. Distilled water was used as hot fluid and nanofluid as cold fluid. The effect of nanopowder concentration on heat transfer was investigated for 10 and − 5 °C inlet temperature and different flow rates of nanofluid. The result shows that substantial improvement in heat transfer was attained using nanofluid compared with base fluid (EG:water mixture). The overall heat transfer coefficient showed enhancement of 14.99% and 12.29% for nanofluid of 2 wt% concentration compared to base fluid (EG:water) at 10 °C and – 5 °C nanofluid inlet temperature respectively. However, a slight increase in pumping power was observed due to the increase in particle concentration. Effectiveness was found to be more at higher weight concentration. Correlation are proposed to predict the effective thermal conductivity and Nusselt number.

在目前的工作中，在板式换热器中进行了实验研究，以研究热传递特性，例如热传递率，总热传递系数，对流热传递系数，效率和泵浦功率（比率为35:65（v / v））乙二醇和水的混合物基于Al ₂ O ₃纳米流体的重量浓度范围为0.2％至2％。蒸馏水用作热流体，纳米流体用作冷流体。在入口温度为10和-5°C以及纳米流体的不同流速下，研究了纳米粉末浓度对传热的影响。结果表明，与基础流体（EG：水的混合物）相比，使用纳米流体可以实现传热的显着改善。与10°C和– 5°C纳米流体入口温度下的基础流体（EG：水）相比，浓度为2 wt％的纳米流体的总传热系数分别提高了14.99％和12.29％。然而，由于颗粒浓度的增加，观察到泵浦功率略有增加。发现在较高的重量浓度下有效性更高。