Modeling and Experimental Verification of the Required Power for Electrically Heated Clothing

Wojciech Tylman (), Rafał Kotas, Marek Kamiński, Anna Dąbrowska and Magdalena Młynarczyk
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Wojciech Tylman: Department of Microelectronics and Computer Science, Lodz University of Technology, 93-005 Lodz, Poland
Rafał Kotas: Department of Microelectronics and Computer Science, Lodz University of Technology, 93-005 Lodz, Poland
Marek Kamiński: Department of Microelectronics and Computer Science, Lodz University of Technology, 93-005 Lodz, Poland
Anna Dąbrowska: Department of Personal Protective Equipment, Central Institute for Labour Protection—National Research Institute Lodz, 90-133 Lodz, Poland
Magdalena Młynarczyk: Department of Ergonomics, Central Institute for Labour Protection—National Research Institute Warsaw, 00-701 Warsaw, Poland

Energies, 2022, vol. 15, issue 20, 1-15

Abstract: The article presents simple modeling and experimental verification of the power required for thermal comfort in electrically heated clothing. The clothing consists of a jumpsuit with embedded heating insets, controlled by a dedicated microprocessor system. The user is able to set heating power using a smartphone app. The experiments, conducted in a mobile freezing chamber, aimed at verification of the model of theoretical power (according to ISO 11079) required to maintain thermal comfort in ambient temperatures below 0 °C. Three participants were asked to adjust heating power to reach thermal comfort. The experiment revealed the required power to be only 40–60% of the theoretical one, meaning that the design of the electrically heating clothing relying solely on the theoretical models and standards would lead to oversizing of the heating system power. Further study indicated that the mean skin temperature by itself is not sufficient as an input to the algorithm for automatic maintaining of thermal comfort, even in stationary conditions.

Keywords: actively heated clothing; thermal comfort; automatic control; smart clothing (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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