ANALYSIS OF PERIPHERAL HEAT TRANSFER IN MAN
ANALYSIS OF PERIPHERAL HEAT TRANSFER IN MAN
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DOI：
10.1152/jappl.1971.30.5.779
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发表时间：
1971-01-01
影响因子：
3.3
通讯作者：
SEILER, L
中科院分区：
文献类型：
--
作者：
KELLER, KH;SEILER, L
肯尼思·凯勒还有小路易斯·塞勒。人体外周热传递的分析。应用生理学杂志。30（5）：779-786。1971.本文提出了一个一维稳态连续介质模型，考虑了组织传导、血液对流、血管热交换和组织代谢等因素对周围组织传热的影响。在各种流动条件下，非等温区的有效电导率被确定。结果以图表形式呈现，并与现有数据进行了比较。结果表明，最小有效传导率是组织的导热系数，最大值是传导率和毛细血管灌注率的几何平均值。本文讨论了一种从解剖学角度考虑动脉预冷引起的有效电导率降低的估计方法。血管活性;皮肤电导;逆流热交换;有效导热性长期以来，人们已经认识到，身体在维持恒温状态时可利用的控制因素之一是其改变皮下区域对热传递的阻力的能力。促成这种能力的因素有几个，涉及热量可以通过皮肤从身体传递到环境的各种模式。最明显的热传递方式是通过皮下组织的蛋白质和脂肪层的热传导。由于这两种类型的组织的热导率明显不同（10，13），皮肤附近的非等温层的组成以及总厚度将影响热传递速率。
KELLER, KENNETH H., AND LOUIS SEILER, JR. An amzlysis of peripheral heat transfer in man. J. Appl. Physiol. 30 (5): 779-786. 197 1.-A one-dimensional steady-state continuum model for heat transfer through the tissue of peripheral regions is presented combining the effects of tissue conduction, convection by blood flow, vascular heat exchange, and tissue metabolism. The effective conductivity of the nonisothermal region is determined under various flow conditions. The results are presented graphically and compared with existing data. It is shown that the minimum effective conductivity is the thermal conductivity of the tissue and the maximum is the geometric mean of the conductivity and the capillary perfusion rate. A method for estimating the reduction in effective conductivity due to arterial precooling from anatomical considerations is discussed. vasomotor activity; skin conductance; countercurrent heat exchange; effective thermal conductivityIT HAS LONG BEEN RECOGNIZED that one of the elements of control available to the body in the maintenance of a homoiothermic state is its ability to vary the resistance of its subcutaneous regions to the transfer of heat. The elements that contribute to this ability are several and involve the various modes by which heat can be transferred from the body to the environment through the skin. The most obvious mode of heat transfer is heat conduction through the proteinaceous and fatty layers of subcutaneous tissue. Since the thermal conductivity of these two types of tissue differ markedly (10, 13), the composition as well as the total thickness of the nonisothermal layer in the vicinity of the skin will affect the rate of heat transfer.