ABSTRACT
The ambient summer temperature within the spinning workshop consistently exceeds the upper limit of the comfort zone. This study aims to assess individuals’ thermal responses under various high-temperature combinations resembling those encountered in the spinning workshop. Forty students were recruited as participants and exposed to 112 state points within a controlled climate chamber. These conditions encompassed diverse high-temperature combinations, comprising four temperature levels (29 °C, 32 °C, 35 °C, and 40 °C), seven humidity levels (30%, 40%, 50%, 55%, 60%, 65%, and 70%), and four air velocity levels (0, 0.1, 0.3, and 0.5 m/s). Participants donned single-layer clothing with a thermal resistance of 0.6 clo, and their subjective evaluations were collected via questionnaires. The study confirms that the GB/T 50481 guidelines for workshop temperature appear to be reasonable, considering the low thermal expectation and adaptation of workers. However, nearly 100% of the participants deemed temperatures surpassing 38 °Cwithin the spinning workshop as unacceptable, with approximately 80% of participants categorizing it as distinctly unacceptable. Consequently, it is recommended that the GB/T 50481 standards be extended to explicitly declare temperatures above 38 °C within the spinning workshop as unacceptable. This study lays a robust foundation for forthcoming research concerning high-temperature conditions within spinning workshops.
Disclosure statement
No potential conflict of interest was reported by the author(s).