کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
667952 1458720 2016 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
PCM cooling vest for improving thermal comfort in hot environment
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
PCM cooling vest for improving thermal comfort in hot environment
چکیده انگلیسی


• A fabric-PCM model for heat transfer in clothing containing PCM packets is developed.
• The model was validated experimentally with PCM packets of different melting points.
• The fabric-PCM vest model was integrated with a segmental bio-heat model.
• A lower PCM melting temperature results in faster cooling effect of the human.
• Increasing the PCM mass in the vest increases the cooling duration effect.

A cooling vest containing phase change materials (PCM) can help in maintaining the skin temperature of the covered parts at a comfortable level. A transient mathematical model of heat and mass transfer through clothing layers containing PCM packets was developed. Two experiments were performed on a clothed heated cylinder in controlled environment to validate the model using two PCMs at different melting temperatures. Good agreement was found between model-predicted and measured temperatures of the microclimate air between the cylinder and the PCM.The validated fabric-PCM model was then integrated with a segmental bio-heat model to provide realistic skin boundary conditions. The predicted core and mean skin temperatures agreed well with published experimental data of a human wearing a PCM-vest in hot environment.The validated integrated bio-heat and fabric-PCM models were used to study the effect of the melting temperature of the PCM and its mass on the vest performance. It was found that a lower melting temperature must be used when a fast cooling effect is desirable. Moreover, it was found that at fixed melting temperature increasing the PCM mass increased the cooling duration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Thermal Sciences - Volume 102, April 2016, Pages 154–167
نویسندگان
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