Yang Jingang, Feng Zitong
Jilin Jianzhu University, School of Municipal and Environmental Engineering, Changchun 130118, China.
Heliyon. 2024 May 8;10(10):e30869. doi: 10.1016/j.heliyon.2024.e30869. eCollection 2024 May 30.
The new type of heat exchanger uses the micro heat pipe as the main heat transfer material. Compared with the traditional heat exchanger of the same kind, the performance of the new type of heat exchanger has significantly improved. By studying the evaluation method of strengthening the performance of the heat exchanger, the performance of the heat exchanger can be further optimized. Most of the current literature study the heat transfer coefficient of the heat exchanger, but there are many influencing factors. Therefore, the evaluation lacks accuracy, and there is no clear research description of fin strengthening performance of the heat exchanger. In this paper, the PEC and jf methods were used in evaluating the enhanced performance of a new type of heat exchanger. Multiple performance indexes were used as evaluation factors and the characteristics of flow and heat transfer were analyzed by studying the working medium, heat transfer coefficient and pressure drop in the heat exchanger. The study, therefore, proposed an optimization direction and the results proved that PEC and jf methods can be used to evaluate the performance of the new heat exchanger efficiently, and the two conclusions were similar. The fins were more capable to improve the performance of heat exchanger when >31000.
新型热交换器采用微热管作为主要传热材料。与传统同类热交换器相比，新型热交换器的性能有显著提升。通过研究强化热交换器性能的评估方法，热交换器的性能可得到进一步优化。当前多数文献研究热交换器的传热系数，但影响因素众多。因此，评估缺乏准确性，且对于热交换器翅片强化性能尚无明确的研究描述。本文采用PEC和jf方法评估新型热交换器的强化性能。以多个性能指标作为评估因素，通过研究热交换器中的工作介质、传热系数和压降来分析流动和传热特性。该研究因此提出了一个优化方向，结果证明PEC和jf方法可有效用于评估新型热交换器的性能，且两个结论相似。当>31000时，翅片更能提高热交换器的性能。
