Introduction to thermal comfort standards
نویسنده
چکیده
The aim of this paper is to describe existing ISO standards and current activity concerned with thermal comfort. It describes how an ISO standard is produced from a new work item proposal (NP) to publication as an international standard (ISO). A framework is provided for the assessment of ISO standards and their revisions. Standards should be valid, reliable, useable, and with sufficient scope for practical application. The existing thermal comfort standard (ISO 7730) is considered in terms of these criteria as well as ISO 8996 (metabolic rate) and ISO 9920 (clothing). The consequences of inaccuracy in estimation of metabolic rate and clothing insulation show that ‘reasonable estimates’ can provide a range of thermal sensation predictions. The work of ISO/TC 159 SC5, ‘Ergonomics of the physical environment’, is presented in Appendix 1. Descriptions of ISO 7726 (instruments), ISO 10551 (subjective measures), ISO TS 13732 Part 2 (contact with surfaces at moderate temperature), ISO 14505 (vehicles), and ISO 14515 (people with special requirements) are described in Appendix 2.
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