Significance and Use
This test method can be used to quantify and compare the evaporative resistance provided by different clothing systems. The evaporative resistance values for ensembles measured under
isothermal conditions can be used in models that predict the physiological responses of people in different environmental conditions.
The measurement of the evaporative resistance provided by clothing is complex and dependent upon the apparatus and techniques used. It is not practical in a test method of this scope to
establish details sufficient to cover all contingencies. Departures from the instructions in this test method have the potential to lead to significantly different test results. Technical
knowledge concerning the theory of heat transfer, moisture transfer, temperature, and air motion measurement, and testing practices is needed to evaluate which departures from the
instructions given in this test method are significant. Standardization of the method reduces, but does not eliminate, the need for such technical knowledge. Report any departures with the
results.
1. Scope
1.1 This test method covers the determination of the evaporative resistance of clothing ensembles. It describes the measurement of the resistance to evaporative heat transfer from a heated
sweating thermal manikin to a relatively calm environment.
1.1.1 This is a static test that provides a baseline clothing measurement on a standing manikin.
1.1.2 The effects of body position and movement are not addressed in this test method.
1.2 The evaporative resistance values obtained apply only to the particular ensembles evaluated and for the specified environmental conditions of each test, particularly with respect to air
movement and sweating simulations.
1.3 Evaporative resistance values reported in SI units shall be regarded as standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to
establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
F1291 Test Method for Measuring the Thermal Insulation of Clothing Using a Heated Manikin
Keywords
evaporative resistance; protective clothing; sweating manikin; Manikin; Protective clothing; Sweating manikin;
ICS Code
ICS Number Code 61.020 (Clothes)
DOI: 10.1520/F2370-10
ASTM International is a member of CrossRef.
ASTM F2370