摘要
热电厂热储系统的构建,对于废弃能源存储和废水再利用有重要意义。以吉林省桦甸市热电厂为例,通过对研究区水文地质条件和温度参数概化,利用FEFLOW软件构建桦甸市热电厂地下水-热耦合模型,用实际观测资料进行识别和验正,初步构建热储系统模型。设置不同井间距和抽水量来优化热储模型,研究结果表明:200 m井间距热贯通严重,500 m和1 000 m热贯通影响小;1 500 m^3/d的流量比1 200 m^3/d的流量在提热期温度下降更快,但提热总量显著增加;各方案提热总量对比显示,优化储热方案为井间距离500 m,储热期注水量8 400 m^3/d,热提取期抽水量1 500 m^3/d,冷水抽注水井在储热期和热提取期水量均为1 200 m^3/d,提热总量为2.27×10^(11)J/d。
The construction of thermal power plant heat storage system is critical in the storage of waste energy and waste water recycling. A groundwater-thermal model was proposed using FEFLOW in Huadian City after generalizing the hydrogeological conditions and temperature. The initial model of the thermal storage system was then identified and verified using the actual observation data. In order to optimize the model, different well space and water extraction volume were set. The results showed that serious heat transfixion appeared in the condition of 200 m iner-well space, while 500 m and 1 000 m iner-well space saw a slight heat penetration effect. The temperature dropped faster in rate of 1 500 m3/d than 1 200 m3/d, but the total heat increased significantly. By comparing the total scheme mentioned hot among different schemes, it was concluded that the best scheme had 2.27 × 10-11 J/d total heat in the condition that 500 m distance between wells, water injection rate of 8 400 m3/d in heat storage period, water output rate of 1500 m3/d in heat extraction period, the cold water pumping and injection rate of 1200 m3/d in heat storage and extraction period.
出处
《环境工程》
CAS
CSCD
北大核心
2017年第6期151-155,共5页
Environmental Engineering
基金
国家水体污染控制与治理科技专项(2012ZX07202-009)
吉林省自然基金(20150101116JC)
关键词
人工储热
热储系统
模型优化
数值模拟
artificial heat accumulation
thermal storage system
model optimization
numerical modeling
