地板供暖系统实现人工环境中的热舒适性外文翻译.docVIP

K.A.Antonopoulos.M.Vrachopoulos.c.Tzivanidis National Technical University of Athens. Mechanical Engineering Department.Thermal Section.42 Patission Street.Athens.106 82.Greece Received 5 february 1998 Text Floor Heating : Achieving Thermal Comfort in Artificial Environments Modern man demands high levels of thermal comfort in artificial environments. Linked to this international pressure grows to reduce demand on the earth’s energy reserves. Modern technology has made great strides forward in developing new innovative heat sources but probably the greatest advance in combined thermal comfort and energy conservation is the modern wet floor heating system. The advent of high quality plastics pipes has made possible the utilization of low temperature water in floor heating systems perfectly compatible with the new heat source technology. Fully developed for all types of floor construction, U.F.H. combines types of heat, conduction, radiation and convection, matching the ideal temperature gradient throughout an entire building. The safe, invisible, space saving, vandal and tamper proof system is both responsive and energy conscious offering passive self regulation. Thermal comfort can be defined as the state of mind where satisfaction id felt with the thermal environment. Research shows that people feel most comfortable when their feet are a little warmer than their heads. Independent tests reveal that the most acceptable indoor climate is one in which the floor temperature ranges between ninetenty—twenty-nine and the air temperature at head level ranges between twenty and twenty-four. However, since individuality is integral to all human activity it is not possible to specify one set of environmental conditions which will meet all cases. The best results we are likely to achieve depend on a 5% dissatisfaction factor. There is no temperature that will please everyone, but we can aim to establish a comfort zone that will satisfy the highest possible percentage of those