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BS EN ISO 7933:2023 - TC Tracked Changes. Ergonomics of the thermal environment. Analytical determination and interpretation of heat stress using calculation of the predicted heat strain, 2023
- A-30436561.pdf [Go to Page]
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- 6.1 Heat balance equation [Go to Page]
- 6.1.1 General
- 6.1.2 Metabolic rate, M
- 6.1.3 Effective mechanical power, W
- 6.1.4 Heat flow by respiratory convection, Cres
- 6.1.5 Heat flow by respiratory evaporation, Eres
- 6.1.6 Heat flow by conduction, K
- 6.1.7 Heat flow by convection, C
- 6.1.8 Heat flow by radiation, R
- 6.1.9 Heat flow by evaporation, E
- 6.1.10 Heat storage for increase of core temperature associated with the metabolic rate, Qeqi
- 6.1.11 Heat storage, S
- 6.2 Calculation of the required evaporative heat flow, the required skin wettedness and the required sweat rate
- 7.1 Basis of the method of interpretation [Go to Page]
- 7.1.1 General
- 7.1.2 Stress criteria
- 7.1.3 Strain criteria
- 7.1.4 Reference values
- 7.2 Analysis of the work situation
- 7.3 Determination of allowable exposure time, Dlim [Go to Page]