EFFECT OF THERMAL STORAGE ON ACTUAL HEAT SUPPLY IN RESIDENTIAL BUILING WITH SLAB-ON-GRADE RADIANT FLOOR HEATING SYSTEM
Radiant floor heating systems have been widely used in new-built residences for its energy saving, comfortable, uniform indoor temperature and no inhabit space. But survey results showed that indoor temperature and design heating supply of almost all the residences with floor heating are too big to satisfy comfort and reduce energy demand. One of the most important factors is that thermal storage capability of concrete slab is not considered in slab-on-grade floor heating system designs. Thermal storage technology is one of the key components for solar buildings, while floor heating is one of the optimal auxiliary heating system, so how to effectively use heat charge/discharge characteristic of concrete slab is very important. In this paper, the field survey results of residence with slab-on-grade floor heating have been reported, showed that indoor air temperature is up to more than 23℃ almost during heating period, even in 1/4 of design heat supply. Field measurement and theoretic calculation were used to determine actual heat supply based on thermal storage, a formula for equivalent heat supply was presented. Finally, a residence was taken as an example to analyze the effect of thermal storage of slab-on-grade radiant floor heating system on actual heat supply and energy demand.
B.Chen Y.Y.Sun L.Liu
Laboratory of Building Environment and New Energy Resources, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian, Liaoning 116024 P.R.China
国际会议
2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)
北京
英文
2007-09-18（万方平台首次上网日期，不代表论文的发表时间）