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Ansi Ashrae 55 2004 Pdf Download ->>->>->> http://shorl.com/disustibrokyny
Measurement methods[edit]The standard addresses the four primary environmental factors (temperature, thermal radiation, humidity, and air speed) and two personal factors (activity and clothing) that affect thermal comfortAre you sure you want to continue?CANCELOKLoadingIt is also specified that the methods provided by this standard are no longer valid when the clothing insulation exceed 1.5 cloAll of the building systems must be designed to maintain the occupied spaces at the indoor conditions specified by one of the described evaluation methods at design conditions
Purpose[edit]Sample documentation is provided in Informative Appendix J.[1]Section five of the ANSI/ASHRAE Standard 55 provides a table with clothing insulation of a variety of individual garmentsTo evaluate the thermal comfort over a period of time in a mechanically conditioned space, the exceedance hours are the sum of all the hours when the absolute value of PMV is greater than 0.5"Effective temperature scale useful for hypo-and hyperbaric environments"Users provide operative temperature (or air temperature and mean radiant temperature), air speed, humidity, metabolic rate, and clothing insulation value, and the tool evaluates predicted thermal sensation on a scale from -3 (cold) to +3 (hot)There is a variety of means to determine the insulation provided by clothingPhysical measurements[edit]Further information: Thermal comfort thermal comfortLocal thermal discomfort[edit]For an occupant-controlled naturally conditioned space, the exceedance hours are the sum of hours when the operative temperature falls outside of the lower and upper boundaries of the comfort zone.[1]1 clo = 0.155mC/W (0.88fthF/Btu))[1]In 2004 the standard underwent significant changes with the addition of two thermal comfort models: the PMV/PPD model and the adaptive comfort model.[6]The vertical air temperature difference between ankle and head is limited to 3C (5.4F) for seated occupants and 4C (7.2F) for standing occupants.[5] If occupants' feet will be in contact with the floor, the temperature must be 1929C (6684F).[1] ae94280627
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