This study develops an add-on local sweating simulation system to upgrade existing dry thermal manikins to local and sweating thermal manikins. The performance of this system was studied using a dry thermal manikin resembling a human lying on a bed with a ventilated mattress. The system comprises water-repellent porous hollow tubes to discharge water onto a diffusive fabric, as well as a motorized gear pump, DC power supply, relay module, microcomputer, and water container. Using the developed system, we maintained a cyclic steady-state for sweat generation; further, as simulated sweat, the tubes discharge distilled water over a wide area on the surface of a manikin segment covered with fabric. The local evaporative heat loss determined using the manikin roughly agreed with that calculated using the latent heat and water discharge rate, with a difference within 5 W/m². The humidity in the bed microenvironment was increased via the add-on sweat generation system and decreased via mattress ventilation. A dry thermal manikin with an add-on system is suitable for evaluating local cooling induced by sweating. The system has high repeatability (6% standard deviation); however, the accuracy of the water discharge rate (30%) needs improvement.

本研究开发了一个附加的局部出汗模拟系统，将现有的干热人体模型升级为局部和出汗的热人体模型。该系统的性能是使用干热人体模型研究的，该人体模型类似于躺在带有通风床垫的床上的人。该系统包括将水排放到扩散织物上的防水多孔空心管，以及电动齿轮泵、直流电源、继电器模块、微电脑和水容器。使用开发的系统，我们保持了出汗的循环稳态；此外，作为模拟汗液，这些管子将蒸馏水排放到覆盖有织物的人体模型部分表面的大面积区域。使用人体模型确定的局部蒸发热损失与使用潜热和排水率计算的结果大致相符，² . 床微环境中的湿度通过附加的出汗系统增加，并通过床垫通风降低。带有附加系统的干热人体模型适用于评估出汗引起的局部冷却。系统重复性高（标准偏差6%）；但出水率（30%）的准确度有待提高。