CAJ | 학술논문

传统的弓形折流板换热器因其结构简单、安全可靠及适应性强等优点应用非常广泛，但是传统的弓形折流板换热器换热效率较低，壳程压力损失较大，容易结垢。因此，通过对弓形折流板结构进行改进以改善管壳式换热器的壳程流动传热状况，减小其能耗损失具有十分重大的工程意义。采用数值模拟的方法，对缺口高度为0.2D的折流板进行开孔优化研究，对不同壳程进口流速下的普通弓形折流板换热器和折流板开孔换热器的壳程流场及温度场分别进行了数值模拟。在壳程进口流速相等的条件下，折流板开孔的换热器比普通弓形折流板换热器的换热效果好；壳程进口速度较低时，效果最明显。
전통적궁형절류판환열기인기결구간단、안전가고급괄응성강등우점응용비상엄범，단시전통적궁형절류판환열기환열효솔교저，각정압력손실교대，용역결구。인차，통과대궁형절류판결구진행개진이개선관각식환열기적각정류동전열상황，감소기능모손실구유십분중대적공정의의。채용수치모의적방법，대결구고도위0.2D적절류판진행개공우화연구，대불동각정진구류속하적보통궁형절류판환열기화절류판개공환열기적각정류장급온도장분별진행료수치모의。재각정진구류속상등적조건하，절류판개공적환열기비보통궁형절류판환열기적환열효과호；각정진구속도교저시，효과최명현。
The traditional baffle heat exchanger is widely used for its simple structure ,safety and reliability and adaptability advantages ,but the traditional baffle heat exchanger has many weaknesses :its thermal efficiency is low ,shell side pressure loss is bigger and easy scaling .It is a very important engineering significance through improving the vertical baffles'structure to ameliorate the shell and tube heat exchanger's flow and heat transfer condition of shell side and reduce its energy dissipation . Baffle opening to improve the structure of a gap 0 .2D height was studied by numerical simulation method .The velocity field and temperature field numerically simulated ordinary baffles heat exchanger and baffle opening heat exchanger . Under the condition of the same entering velocity of shell side ,the thermal effect of baffle opening heat exchanger is better than ordinary vertical baffle plate heat exchanger .And when the entering velocity of shell side is slow ,the effect is better .