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Using footwarmers in offices for thermal comfort and energy savings

机译：在办公室中使用暖脚器，以达到热舒适和节能的目的

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An office equipped with personal footwarmers was maintained at cooler-than-normal indoor temperatures in the winter, producing great energy savings. The occupants' thermal comfort was not affected. The footwarmers provide individual heating control over a segment of the body that most strongly influences comfort perception when one is cool overall. If cooler ambient indoor temperatures could be made comfortable, savings in central heating energy would be possible. During a six-month winter period in Berkeley California, knowledge workers with low-energy footwarmers experienced a lowering of room heating set point from 21.1 degrees C (70 degrees F) to 18.9 degrees C (66 degrees F). Surveys showed equal thermal comfort in the original 'higher heating setpoint no-footwarmer' condition and the 'lower heating set point plus occupant-controllable footwarmer' condition. Heating energy was closely monitored throughout. It dropped 38-75% depending on the setpoint reduction and outdoor conditions. The added plug load energy from the low-energy footwarmers was much less than the central heating energy saved by lowering the heating set point (3-21 W vs 500-700 W average power per occupant during occupied hours). A few subjects had ergonomic issues with the particular footwarmers used, so usage was not universal. Additional foot- and leg-warmer design options would help. (C) 2015 Elsevier B.V. All rights reserved.
机译：在冬天，配备个人暖脚器的办公室保持室内温度低于正常水平，从而节省了大量能源。乘员的热舒适感未受影响。脚部调节器可对整个身体部位进行单独的加热控制，这在整体凉爽时会极大地影响舒适感。如果可以使室内环境温度较低，则可以节省中央供暖能源。在加州伯克利的六个月冬季中，低能耗脚暖手的知识工作者的房间采暖设定值从21.1摄氏度（70华氏度）降低到18.9摄氏度（66华氏度）。调查显示，在原始的“较高的加热设定值无踩脚”状态和“较低的加热设定点加乘客可控的暖脚器”条件下，热舒适性相同。整个过程中都严格监控了热能。根据设定值降低和室外条件，它下降了38-75％。低能耗脚加热器带来的额外插头负载能量远低于降低供暖设定点所节省的中央供暖能量（3-21 W vs.占用小时内每位乘客的平均功率500-700 W）。一些受试者在使用特定的暖脚器时存在人体工程学问题，因此用法并不普遍。其他的暖脚和暖脚设计选项将有所帮助。 （C）2015 Elsevier B.V.保留所有权利。

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