地热流体换热过程数值模拟研究  

Numerical Simulation Study on Heat Transfer Process of Geothermal Fluid

作　　者：任毅 杨龙滨 梁月 王大维 吴智凡 REN Yi;YANG Long-bin;LIANG Yue(Harbin Engineering University)

机构地区：[1]哈尔滨工程大学

出　　处：《电站系统工程》2023年第2期5-8,共4页Power System Engineering

摘　　要：为探究在利用地热流体热能发电过程中流体的传热特性,对地热流体的换热过程进行了数值模拟研究。结果表明,有约23%的蒸汽冷凝成了盐水。壁面传热系数在起始位置最大,之后迅速衰减。大量蒸汽粘附在下端面上并在接近冷凝壁面位置逐渐脱离,这些脱离的蒸汽是导致传热系数在起始位置最大的主要原因。壁面处的传热量随壁温的降低而增大,传热系数随壁温的增加呈现出增大的趋势,但增加幅度较小。To explore the heat transfer characteristics in the process of utilizing geothermal fluid heat energy, the heat transfer process of the geothermal fluid has been studied. The results showed that about 23% of vapor condensed into brine in the entire basin. The heat transfer coefficient is the largest at the initial position of the heat pipe condensing wall and then decays rapidly. A large amount of vapor is adhered to the inferior surface of the heat pipe and gradually detached near the condensation wall surface. These vapors are the main cause of the highest heat transfer coefficient at the initial position. The heat flux increases as the wall temperature decreases. The heat transfer coefficient increase with the rise of wall temperature, but the increment is small.

关 键 词：地热能发电 泡状流 传热传质 

分 类 号：TK52[动力工程及工程热物理—热能工程]