CAJ | 학술논문

通过对套管式地下换热器传热过程的分析,在套管式地下换热器传热模型基础上,考虑管内流动和传热,提出了集管内流动与土壤导热相耦合的传热分析模型,并利用数值计算方法进行了传热特性分析.讨论了不同埋管管径组合对流体出口温度及埋管换热率的影响.
통과대투관식지하환열기전열과정적분석,재투관식지하환열기전열모형기출상,고필관내류동화전열,제출료집관내류동여토양도열상우합적전열분석모형,병이용수치계산방법진행료전열특성분석.토론료불동매관관경조합대류체출구온도급매관환열솔적영향.
To analyze deeply the heat transfer of the coaxial tubes underground heat exchanger, a new model to couple the fluid flow in the collecting tubes and the heat transfer between the tubes and the soil was proposed based on the existing equivalent model. The heat transfer characteristics and the performance of the coaxial tubes underground heat exchanger were analyzed by means of the numerical method. The effects of the sizes of the buried tubes on the outlet temperature of fluid in heat exchange and heat transfer rate were studied.