Document Detail


Development of a new device to measure local heat exchange by evaporation and convection.
MedLine Citation:
PMID:  1520226     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
According to the principles of heat and mass transfer, the rate of local heat exchange by convection (C) and local heat loss by evaporation (E) can be estimated if temperature and vapor concentration profiles in the boundary layer are measured. In addition, temperature (Ts) and vapor concentration (rho s) at the surface may be predicted from the measured profiles. On this basis, a new device was developed to measure parabolic profiles by incorporating three relative humidity sensors coupled with thermistors into its probe. It has been evaluated from various tests including human experiments. The results showed that the device, with humidity sensors arranged perpendicular to the surface, could estimate C, E, Ts, and rho s in closer agreement with direct measurements when compared with the conventional gradient method. This confirmed that our method had clear advantages over the conventional gradient method under laminar air flow conditions.
Authors:
N Kakitsuba; T Katsuura
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Aviation, space, and environmental medicine     Volume:  63     ISSN:  0095-6562     ISO Abbreviation:  Aviat Space Environ Med     Publication Date:  1992 Jun 
Date Detail:
Created Date:  1992-10-08     Completed Date:  1992-10-08     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7501714     Medline TA:  Aviat Space Environ Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  538-42     Citation Subset:  IM; S    
Affiliation:
Dept. of Physiology, School of Medicine, Gifu University, Japan.
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MeSH Terms
Descriptor/Qualifier:
Evaluation Studies as Topic
Hot Temperature
Humans
Physiology / instrumentation
Skin Temperature
Sweating / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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