Performance Analysis of Heat Transfer and User Thermal Comfort on Latent Heat Treatment of Scald Wound Based on Spray Cooling

IF 2 3区工程技术 Q3 MECHANICS

Flow, Turbulence and Combustion Pub Date : 2024-11-02 DOI:10.1007/s10494-024-00601-y

Xinglong Zhang, Yu Wang, Risto Kosonen

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Abstract

Spray cooling has been proved to be an effective method for treating scald. However, enhancing its cooling effectiveness and improving user’s thermal comfort are the key factors for its practical implementation. In this study, numerical simulation with computational fluid dynamics software and experimental testing, and subjective questionnaire surveys. Factors influencing the heat removal efficiency of spray cooling for scald treatment and the user’s perception under spray cooling conditions were studied. The results showed that spray temperature had a significant impact on cooling efficiency. The distance between the spray and skin, mass flow rate, and spray medium also had noticeable effects. Additionally, the influence of spray cooling on thermal sensation and thermal comfort under different spray temperatures was investigated. By introducing a “temperature correction coefficient”, thermal sensation data closer to scald conditions were obtained. Experimental results demonstrated that compared to splashing, spray cooling exhibited better cooling effectiveness and comfort feelings. Using the Predicted Mean Vote and Thermal Comfortable Vote as indicators and considering both cooling effectiveness and human thermal comfort, the optimal cooling temperature for females was determined to be 13.1 °C and for males 13.5 °C under scald conditions.

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基于喷雾冷却潜热处理烫伤创面的传热性能及用户热舒适性分析

喷雾冷却已被证明是一种有效的处理烫伤的方法。然而，提高其制冷效率和提高用户的热舒适性是其实际实施的关键因素。本研究采用计算流体力学软件进行数值模拟和实验测试，并进行主观问卷调查。研究了影响喷雾冷却对烫伤处理散热效率的因素以及在喷雾冷却条件下用户的感受。结果表明，喷雾温度对冷却效率有显著影响。喷雾与皮肤的距离、质量流量和喷雾介质也有显著的影响。此外，还研究了不同喷雾温度下喷雾冷却对热感觉和热舒适的影响。通过引入“温度校正系数”，获得了更接近于烫伤状态的热感觉数据。实验结果表明，与飞溅相比，喷雾冷却具有更好的冷却效果和舒适感觉。以预测平均投票（Predicted Mean Vote）和热舒适投票（Thermal Comfortable Vote）为指标，综合考虑降温效果和人体热舒适，在烫伤条件下，女性的最佳降温温度为13.1°C，男性为13.5°C。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Flow, Turbulence and Combustion 工程技术-力学

CiteScore

5.70

自引率

8.30%

发文量

审稿时长

2 months

期刊介绍： Flow, Turbulence and Combustion provides a global forum for the publication of original and innovative research results that contribute to the solution of fundamental and applied problems encountered in single-phase, multi-phase and reacting flows, in both idealized and real systems. The scope of coverage encompasses topics in fluid dynamics, scalar transport, multi-physics interactions and flow control. From time to time the journal publishes Special or Theme Issues featuring invited articles. Contributions may report research that falls within the broad spectrum of analytical, computational and experimental methods. This includes research conducted in academia, industry and a variety of environmental and geophysical sectors. Turbulence, transition and associated phenomena are expected to play a significant role in the majority of studies reported, although non-turbulent flows, typical of those in micro-devices, would be regarded as falling within the scope covered. The emphasis is on originality, timeliness, quality and thematic fit, as exemplified by the title of the journal and the qualifications described above. Relevance to real-world problems and industrial applications are regarded as strengths.