環(huán)境因子對動物生產(chǎn)之影響-閱讀頁
2025-06-02 22:39本頁面
【正文】 nder calm wind situation. Impact of Radiation Radiation Relative MP Cal/cm2/min W/m2 oC oC oC 140 100% 100% 92% 294 100 93 77 420 100 90 69 588 100 88 57 Black globe temperature (BGT) Index bining Temperature, Radiation and Wind but no Humidity. Used in studying the effects of shading and/or ventilation. Effects of forced ventilation on dairy cattle by Berman (1985). BGT = 25, forced ventilation has no effect on reducing body temperature (BT) and rectal temperature(RT). At Tdb36, the increase of RT is in direct proportion to the increase of BGT. With forced ventilation, the rate of rectal temperature increment can be reduced by half. Index bining Temperature, Radiation, Wind and Humidity. Wet bulb globe temperature (WBGT) WBGT_indoor = * Tnv,wb + * BGT WBGT_outdoor = * Tnv,wb + * BGT + * Tdb Determined by Heat Stress Division of . Navy at the Naval Medical research institute in the study of suggested length of “staytime” for an individual performing various tasks, under various physiological heat exposure limits (PHEL) Tnv,wb BGT Tdb Heat Stress Monitor 。
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