Comparison of heat loss by radiation and convection from the body surface of guinea pigs determined with Hatfield's disc and undimensional probability numbers.
The experiments were carried out on 10 non-acclimatized to cold adult guinea pigs at ambient temperatures (Ta) of 29 degrees, 20 degrees and 12 degrees C. The practical heat loss (radiation and convection) from the body surface was determined with Hatfield's disc. Moreover, radiation and convection were evaluated measuring the effective temperature of the hairs. It was found that the amount of heat lost through radiation and convection approached the practical heat loss determined with Hatfield's disc. Heat elimination from the body surface occurred mainly through radiation. The participation of convection in this heat loss was never above 5% of the heat lost through radiation.
D000818:Animals; D001830:Body Surface Area; D001833:Body Temperature Regulation; D006168:Guinea Pigs; D006197:Hair / Q000502:physiology*; D008297:Male; D011336:Probability; D012879:Skin Physiological Phenomena; D013816:Thermodynamics; D013821:Thermometers