季节性太阳能热利用技术在设施农业中的应用研究

Application of Seasonal Solar Thermal Utilization Technology in Facility Agriculture

随着设施农业的急速发展,其冬季供暖用能问题尤为重要。基于季节性太阳能热利用系统的长期蓄热技术,可实现设施农业夏季降温、冬季供暖的需求,减少其能源输入。通过对温室内热量收支的理论计算发现,蓄热季余热产热量约为采暖季采暖负荷的2.2倍。通过该技术,温室夏季可降温10℃左右,冬季可升温8℃左右,室温随环境温度变化明显,降温及供暖效果显著,但随着时间增加,效果变弱。此项目实施为太阳能长期蓄热技术在设施农业领域的发展提供了有利的数据支持。

With the rapid development of facility agriculture, the problem of heating energy consumption in winter is partic-ularly important. The long-term thermal storage technology based on seasonal solar thermal utilization system can realize the cooling in summer and heating in winter of facility agriculture, and reduce its energy input. According to the theoretical cal-culation of heat budget in the greenhouse, it is found that the heat generated by waste heat in the heat storage season is about 2.2 times of the heating load in the heating season. Through this technology, the temperature of the greenhouse can be lowered about 10℃ in summer and increase about 8℃ in winter. The room temperature changes obviously with the environment tem-perature. The cooling and heating effect are remarkable, but the effect becomes weaker with the increase of time. The imple-mentation of this project provides favorable data support for the development of solar long-term thermal storage technology in the feld of facility agriculture.