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Evaporative coefficients for prediction of safe limits in prolonged exposures to work under hot conditions.

Authors
Belding-HS
Source
Fed Proc 1973 Mar; 32(5):1598-1601
NIOSHTIC No.
00023852
Abstract
On the basis that prolonged occupational exposures in hot environments should not result in heat-specific elevation of body temperature (beyond the work-specific set point), upper limits meeting this criterion were sought in multiple exposure of 10 acclimatized male volunteers. From observations of the critical ambient water vapor pressure at which rise in temperature occurred under 10 combinations of work and air speed, coefficients descriptive of prevailing evaporative cooling were derived. The coefficient when clothed was 62% of that when seminude. Formulas which predict safe limits were derived using the mean coefficient values and their standard deviations such that approximately 95% of this type of population should be projected. Responses of body temperature, heart rate, and sweat rate are given for various exposures.
Keywords
NIOSH-Publication; NIOSH-Grant; Temperature-regulation; Thermal-equilibrium; Statistical-analysis; Physiological-effects; Thermal-stress; Stress-measurements; Cardiovascular-functions
Contact
Occupational Health Univ of Pittsburgh Sch of PH 130 DE Soto Street Pittsburgh, PA 15213
CODEN
FEPRA7
Publication Date
19730301
Document Type
Journal Article
Funding Amount
152509
Funding Type
Grant
Fiscal Year
1973
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-00308
Issue of Publication
5
ISSN
0014-9446
Source Name
Federation Proceedings
State
PA
Performing Organization
University of Pittsburgh, Pittsburgh, Pennsylvania
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