Linked Life Data

3579805

Source:http://linkedlifedata.com/resource/pubmed/id/3579805

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1987-5-29
pubmed:abstractText
We studied the physics of heat transfer from the human body under conditions of low air velocity (LAV) (less than 0.1 m.s-1). For 1 ATA, we calculated values of the evaporative heat transfer coefficient (he, kcal.m-2.h-1.mm Hg-1) of 5.24 and 5.37 where ambient temperature/relative humidities were 38 degrees C/70% and 35 degrees C/80%, respectively, and ambient velocities of 0.06 m.s-1 in both cases. This is near our newly conceived "minimum he value" of 4.94, significantly greater than the 2.8 and 3.4 values that are calculated using the Lewis relation. We further described an "iso-vapor pressure temperature difference," delta Tp, which transcribes a water vapor pressure difference into a temperature difference, thus allowing use of classical nondimensional analysis to account for the increasing importance of heat loss through evaporation in LAV. Water vapor pressure differences in LAV hypobaric environments will account for increased heat losses since, for example, the minimum value of he doubles from 4.94 to 9.88 at 0.5 ATA.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0095-6562
pubmed:author
pubmed:issnType
Print
pubmed:volume
58
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
227-36
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Heat transfer from the human body in hyperthermic, low gas-velocity environments.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't