基于CFD的双胆单管电热水器的上下胆温差优化分析

双胆单管热水器因其独特的双胆结构,实现了体积小、成本低的优点,但由于加热管仅存在于下胆内,因此上下胆在加热时存在温差,出水温度的稳定性和效率成为了目前双胆单管热水器研究的热点问题。为研究双胆热水器在单管加热时的温度传导问题,对不同连通管直径、不同连通管长度工况下热水器加热情况进行模拟,研究了双胆中间截面处的温度场变化,分析了上下胆温差的变化规律,为改善双胆单管热水器的结构提供指导。

多股流换热器设计的量纲1温差场均匀性优化因子

The concept of dimensionless temperature-difference uniformity optimization factor was proposed.The application of this factor to path arrangement was studied.The study showed that dimensionless temperature-difference uniformity optimization factor was an effective evaluation criterion of path arrangement of multi-stream heat exchangers and the design of multi-stream heat exchangers could be guided by this factor.