Errors in heat flux measurements due to the thermal resistance of heat flux disks.
J Appl Physiol (1985)
; 69(2): 776-84, 1990 Aug.
Article
en En
| MEDLINE
| ID: mdl-2228888
ABSTRACT
Questions have been raised regarding the effect of the thermal resistance of heat flux transducers (HFTs) on the thermal flux from the skin. A model capable of simulating a large range of "tissue" insulation (variable-R model) was used to study the effect of the underlying tissue insulation on the relative error in heat flux due to the thermal resistance of the HFTs. The data show that the deviation from the true value of heat flux increases as the insulation of the underlying tissue decreases (r = 0.99, P less than 0.001). The underestimation of the heat flux through the skin measured by an HFT is minimal when the device is used on vasoconstricted skin in cool subjects (3-13% error) but becomes important when used during vasodilation in warm subjects (29-35% error) and even more important on metallic-skin mannequins (greater than 60% error).
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Banco de datos:
MEDLINE
Asunto principal:
Termómetros
/
Regulación de la Temperatura Corporal
Tipo de estudio:
Diagnostic_studies
/
Evaluation_studies
/
Prognostic_studies
Límite:
Humans
Idioma:
En
Año:
1990
Tipo del documento:
Article