Combining environmental measurements, subj ective questionnaires and energy consumption simulations,human body comfort and energy conservation of local floor heating in winter are studied.Thermal sensation,thermal comfort,thermal acceptability of 20 subjects and the corresponding energy consumption are tested in an experimental room where the indoor temperature is set at 14,16,18 ℃,respectively.The experimental results show that the local floor heating significantly improves thermal comfort of subject when the indoor temperature is 14 ℃.With indoor air temperature reaching 16 or 18 ℃,the local floor heating satisfies more than 90% of subjects while the needed energy is very low.As compared with the conventional air conditioning system whose setting temperature is 20 ℃,local floor heating could save a large amount of heating energy in Southwest China,East China and Central China,and has the highest energy-saving rate when applied in South China.Therefore,local floor heating can be regarded as a practical way for both improving comfort and saving energy in the south of China.%采用环境测试、主观问卷和能耗模拟相结合的方式,研究冬季局部地面供暖方式下人体舒适性以及能耗情况.在14、16、18 ℃背景温度下的人工环境实验室内,测试了20位受试者的热感觉、热舒适、热可接受以及相应的局部地面供暖能耗.实验结果表明:在14 ℃时,使用局部地面供暖后受试者的舒适性显著提高,在16、18 ℃时,使用局部地面供暖能满足90%以上受试者舒适性要求且所需能耗很低.模拟结果表明:相比设定温度为20 ℃的空调系统能耗,采用局部地面供暖对西南、华东与华中地区节能效果明显,在华南地区节能率最高.因此,局部地面供暖可以作为一种适用于南方地区的提高舒适性和节能性的采暖方法.
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