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| apps:biomet_pmv [2014/09/15 13:39] – enviadmin | apps:biomet_pmv [2014/09/15 13:40] – enviadmin | ||
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| ==== Extention to outdoor conditions ==== | ==== Extention to outdoor conditions ==== | ||
| - | As mentioned above, the concept of PMV/PPD as established by Fanger (1982) was designed for indoor applications. This did affect two fundamental aspects of the PMV mode: the design of the equations and the transition from energy balance units to comfort votes. | + | As mentioned above, the concept of PMV/PPD as established by Fanger (1972) was designed for indoor applications. This did affect two fundamental aspects of the PMV mode: the design of the equations and the transition from energy balance units to comfort votes. |
| First, using the clothing surface temperature as the only environment sensitive variable may be acceptable under office conditions in the absence of direct sun light and almost no ventilation. In an outdoor setting in warm to hot climates, relevant fractions of the human body are not covered by clothing but are exposed to the outdoor envionment with varing radiative loads and higher wind speeds. For those parts of the body, the skin temperature will be substantially different to the values estimated by the equations above. | First, using the clothing surface temperature as the only environment sensitive variable may be acceptable under office conditions in the absence of direct sun light and almost no ventilation. In an outdoor setting in warm to hot climates, relevant fractions of the human body are not covered by clothing but are exposed to the outdoor envionment with varing radiative loads and higher wind speeds. For those parts of the body, the skin temperature will be substantially different to the values estimated by the equations above. | ||