摘要
基于地下连续墙内埋管传热模型的解析解,根据地下换热器进水温度假定曲线,迭代原理及负荷聚合原理提出地下连续墙内埋管地下换热器逐时换热量的计算方法及地下换热器的设计计算方法,并与数值模型、地埋管传热模型及上海自然博物馆的现场试验数据进行比较与分析。结果表明:采用该文提出的方法得到的地下换热器逐时换热量与实测值非常吻合,更能准确分析地下连续墙内换热器可承担的换热量的变化情况,并通过将其与满足上部建筑物冷(热)负荷所需的换热量相比较,从而判断地下换热器的设计参数是否合理,为科学设计地下连续墙内埋管地下换热器提供依据。
A calculation method of variable heat exchange rate and a design method of heat exchangers in dia- phragm walls were proposed, according to iterative principle, flowing temperature field in heat exchangers and multi-load aggregation algorithm, as well as the analytical solution of heat transfer model in diaphragm walls. The comparisons between the new method, the numerical solutions, the traditional models in ground source heat pump and measured data were conducted. The results showed that the calculation result using the new method has a better coincidence with measured data, so the new method is more suitable to analyze the changes of the heat exchange capacity of heat exchangers in diaphragm walls. Based on the comparisons between the heat exchange capacity and the demands of heat exchange rate required by the cooling/heating load of overground building, the reasonability of the design parameters can be obtained.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2013年第3期413-419,共7页
Acta Energiae Solaris Sinica
基金
"十二五"国家科技支撑计划(2012BAJ01B02)
国家自然科学基金(50878150)
长江学者和创新团队发展计划(IRT1029)
关键词
地源热泵
地下连续墙内埋管
地下换热器
传热模型
设计计算方法
ground source heat pump
absorber tubes buried in diaphragm wall
underground heat exchangers
heat transfer model
calculation and design method
