关键词：
温室;屋面;采光;结构;日光温室;倾转屋面;节能
摘 要：
为了实现了日光温室对太阳能的高效利用,该文提出了一种适用于高性能采光的倾转屋面日光温室。该文对倾转屋面日光温室的室内光照进行理论分析,试验测试了该日光温室的室内光照与蓄热性能,并与传统8和9 m跨的固定采光面温室分别进行了对比分析。试验结构表明,与普通固定采光面日光温室相比,倾转屋面日光温室的采光性能和温度指标有了明显提高。在晴天和多云采光天气条件下,倾转屋面日光温室室内的辐照度较普通8和9 m跨固定采光面日光温室均有较大幅度的增加,整体采光率分别提高41.75%和25.05%,对应的室内的辐照度增加平均值为69.54和38.99 W/m2。倾转屋面日光温室室内的温度有较大幅度的提高,表现为整体温度水平提高,倾转屋面日光温室较普通8m跨固定采光面日光温室,保温时段平均温度整体提高了3.1℃。该研究结果为温室建筑结构的改良和结构优化设计提供了参考。
译 名：
Performance experiment on lighting and thermal storage in tilting roof solar-greenhouse
作 者：
Zhang Yong;Zou Zhirong;Li Jianming;College of Horticulture,Northwest University of Agriculture & Forestry;
关键词：
greenhouses;;roofs;;lighting;;structures;;solar-greenhouse;;tilting roof;;energy conservation
摘 要：
The arch roof structure has been widely used in designing solar-greenhouse to efficiently utilize solar energy. The arc structure of solar-greenhouse roof in solar-greenhouse lighting was investigated in this study. The experiment results indicated that the light penetration is essentially same for different arch roof structures under the same ratio of rise to span. The patterns of arch structure and the light transmittance performance were further investigated inside the solar-greenhouse. The linear roof had better performance under the same height-span ratio. We designed a tilting roof solar-greenhouse based on the theoretical analysis. The inclination angle of roof could be adjusted for different demands of daylight under different climate conditions. Its structure is simple, economical and efficient. All studies in this paper are mainly aimed at what is called a "solar-greenhouse with active day lighting technology". This paper describes three types of solar-greenhouses: one innovation structure with the tilting roof solar-greenhouse, and two normal structures with fixed roof angle and 8m-span and 9m-span solar-greenhouse, respectively. Compared to the normal solar-greenhouse with fixed roof angle, the tilting roof solar-greenhouse has new form roof with adjustable tilt angle. The dip angle of the tilting roof-greenhouse's lighting surface can be adjusted based on different solar altitudes. The dip angle of the tilting roof-greenhouse's lighting surface is increased if the solar altitude is decreased. In this paper different experimental data was analyzed using the lighting analysis method. The temperature and the solar irradiance changing rate indoors and outdoors of solar-greenhouse were used to develop a new structural model of high-performance greenhouse. The tilting roof solar-greenhouse is more efficient in utilization of solar energy and raising temperature. Illumination and indoor temperature in the greenhouse with active tilting roof technology has a great enhancement compared with normal structure. The average increasing rate of lighting performance was 41.75%, e.g. 69.55W/m2in the tilting roof solar-greenhouse during 09:00 am-16:00 pm. The solar-greenhouse with adjustable tilt angle was the most economic structure based on synthesized indexes. This structure increased the day-lighting performance by 25.05%, e.g.38.99 w/m2, compared with the solar-greenhouse with fixed roof angle and with the same height-span ratio. Compared with the normal type with fixed roof angle, the mean indoor temperature increased is 3.1℃ in the greenhouse with active tilting roof at the heat preservation period. This paper also discusses the influence coefficient of active day lighting technology, analysis the significance and skill of solar energy utilization in the design of new solar-greenhouse structure according to indoor day lighting analysis of indoor average temperatures. It is expected that experiment results and analysis will support the efficient utilization of Solar Energy and the improvement of greenhouse structure management.
