摘要
为了分析复合墙和土墙保温蓄热能力的差异,对同热阻、同热惰性指标的两组复合墙和土墙温室,在边界条件相同的情况下对二者的热性能进行了对比分析。结果表明:夜间同热阻土墙温室的空气温度高于复合墙温室0.5℃,复合墙温室的空气温度高于同热惰性指标土墙温室1.0℃。同热阻土墙、复合墙的内表面温度差异不明显,而同热惰性指标土墙内表面则出现1.5℃的温差。同热阻土墙和复合墙在夜间(22:00)向室内方向放热的墙体厚度均为100mm。复合墙温室墙体蓄热性及热稳定性均好于同热阻或同热惰性指标土墙温室。
To investigate heat conservation of layered walls and earth walls in Chinese solar greenhouses, the thermal properties were calculated for both type of walls with the same thermal resistance（TSTR）or the same thermal inertia （TSTI）under the same boundary conditions. Calculation results showed that the air temperature at 22：00 for the layered wall greenhouse was down to 0.5~C lower than the earth wall with TSTR greenhouse but up to 1.0℃ higher than the earth wall with TSTI greenhouse. A 1.5℃temperature difference along the wall inner surface occurred for the earth wall with TSTI, while the inner surface temperatures was nearly the same along the wall height for both the layered wall or the earth wall with TSTR with the 100 mm thickness on the inside wall released the heat to the inside air during night time. The heat conservation for layered walls are better than for the earth wall with TSTR or TSTI.
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2011年第6期718-722,共5页
Journal of Shenyang Agricultural University
基金
国家自然科学基金项目(31071833)
教育部留学回国人员科研启动基金项目(教外司留[2009]1001号)
关键词
日光温室
土墙
复合墙
热阻
热惰性
热性能
solar greenhouse
earth wall
layered wall
thermal resistance
thermal inertia
thermal property
