Description

ASHRAE Research Project RP-1760 aimed to update thedatabase of western clothing as used in ANSI/ASHRAE Standard55-2013, Thermal Environmental Conditions for HumanOccupancy (ASHRAE 2013a), ISO Standard 7730-2005,Ergonomics of the Thermal Environment—Analytical Determinationand Interpretation of Thermal Comfort Using Calculationof the PMV and PPD Indices and Local ThermalComfort Criteria (ISO 2005), and ISO Standard 9920-2009,Ergonomics of the Thermal Environment—Estimation ofThermal Insulation and Water Vapor Resistance of a ClothingEnsemble (ISO 2009). The previous database, established inthe 1970s and 1980s, relied mostly on single-zone manikinsand did not provide detail on air and body movement effects oninsulation. Insulation values of up to 70 clothing ensembles(31 male, 39 female) were measured in a static standingposture at 0.2, 0.4, and 1 m/s–1 (0.66, 1.31, and 3.28 ft/s–1) airspeed, walking in 0.2 and 1.0 m.s–1 air speed, and in a sittingposture in 0.2 m.s–1 air speed. Measurements were conductedin three laboratories on three manikins with up to 34 individuallycontrolled zones. In addition, vapor resistance was determinedin 31 ensembles. This new database provides total,intrinsic and air insulation values, vapor resistance, and clothingarea factors as well as correction factors to estimate thewind and movement effect on clothing insulation. Furthermore,the model to estimate the clothing area factor from insulationvalues of the ensembles was updated reflecting changesin commonly worn clothing styles.

Citation: 2021 Virtual Conference Technical Papers

Product Details

Published:

2021

Number of Pages:

27

Units of Measure:

Dual

File Size:

1 file , 6.7 MB

Product Code(s):

D-VC-21-011(RP-1760)