CAJ | 학술논문

为了给房间提供热能而不消耗电力和常规能源,设计并制造了用于房屋取暖的太阳能热转换系统.该系统主要由太阳能集热器、卵石层和房间组成.太阳能集热器具有28根真空集热管,每根真空集热管的直径和长度分别为47 mm和1500 mm.在长4 m宽2.7 m的房间内铺设了150 mm厚的卵石层.卵石大小为50～100 mm.对由太阳能集热器热水自然循环加热的太阳能热转换系统卵石层的热特性进行了实验研究.测试了该系统不同单元的温度.结果表明,在考虑了每个测试单元热传递时间滞后的条件下,当系统的入口点和出口点的温度存在温差及卵石层和水泥地面存在温差时,该系统能够实现热能自然循环.证实了卵石层和地表面的水平温度分布均匀.卵石层储热周期为10 h、放热周期为24 h.以卵石层日平均温度与户外平均温度之间的差值为依据,计算出卵石层一日内的储热量约为49 MJ/d.
위료급방간제공열능이불소모전력화상규능원,설계병제조료용우방옥취난적태양능열전환계통.해계통주요유태양능집열기、란석층화방간조성.태양능집열기구유28근진공집열관,매근진공집열관적직경화장도분별위47 mm화1500 mm.재장4 m관2.7 m적방간내포설료150 mm후적란석층.란석대소위50～100 mm.대유태양능집열기열수자연순배가열적태양능열전환계통란석층적열특성진행료실험연구.측시료해계통불동단원적온도.결과표명,재고필료매개측시단원열전체시간체후적조건하,당계통적입구점화출구점적온도존재온차급란석층화수니지면존재온차시,해계통능구실현열능자연순배.증실료란석층화지표면적수평온도분포균균.란석층저열주기위10 h、방열주기위24 h.이란석층일평균온도여호외평균온도지간적차치위의거,계산출란석층일일내적저열량약위49 MJ/d.
In order to provide heat for a house without power and fossil energy consumption, a solar thermal energy conversion system for house heating was designed and manufactured. The system was mainly composed of a solar collector, gravel layer and a house. The solar collector had 28 vacuum tubes. The diameter and length of each tube were 47 mm and 1500mm, respectively. The gravel layer with thickness of the 150 mm was put in the house whose length and width were 4 m and 2.7 m, respectively. The particle size of the gravel was ranged within 50～ 100 mm. Thermal characteristics of the gravel layer in the system heated by hot water natural circulation with solar collector were studied. Temperature of each element was measured. Results showed that it was possible to realize heat natural circulation when temperature difference at inlet and outlet of the system, and that of the gravel layer and cement mortar surface were occurred when delay time of heat transfer in each element was considered. In addition, it was confirmed that horizontal temperature distribution of the gravel layer and cement mortar surface appeared evenly. Heat storage period of the gravel layer was 10 hours and its radiation period was 24 hours. The quantity of heat storage of the gravel was about 49 M J/day when the difference of daily average temperature of gravel layer and daily average temperature of the outdoors was applied.