CAJ | 학술논문

为了研究球面弓形折流板换热器折流板曲率半径对换热器壳程压降和换热系数的影响，对曲率半径分别为0.75D、1D、1.25D、1.5D 的球面弓形折流板换热器和普通弓形折流板换热器的壳侧流体流动与传热性能进行数值模拟与研究，得到了壳程流体流场分布以及壳程压降和传热系数。研究结果表明在相同入口流速下，曲率半径越小换热器壳程传热与流阻综合性能指标越大，0.75D 球面弓形折流板换热器可比普通弓形折流板换热器提高8.5%左右。
위료연구구면궁형절류판환열기절류판곡솔반경대환열기각정압강화환열계수적영향，대곡솔반경분별위0.75D、1D、1.25D、1.5D 적구면궁형절류판환열기화보통궁형절류판환열기적각측류체류동여전열성능진행수치모의여연구，득도료각정류체류장분포이급각정압강화전열계수。연구결과표명재상동입구류속하，곡솔반경월소환열기각정전열여류조종합성능지표월대，0.75D 구면궁형절류판환열기가비보통궁형절류판환열기제고8.5%좌우。
In order to research the influence of the spherical baffle heat exchanger’s baffle curvature radius to the shell side pressure drop and the coefficient of heat transfer, shell side fluid flow condition and heat exchanger performance of the spherical baffle heat exchangers with curvature radius of 0.75D,1D,1.25D or 1.5D and conventional segmental baffle heat exchangers were numerically analyzed and studied. The shell side fluid flow field distribution, shell side pressure drop and coefficient of heat transfer were obtained. The results indicate that, under the same inlet flow conditions, the smaller of the baffle curvature radius,the bigger of comprehensive performance index of the heat exchanger’s shell side heat transfer and flow resistance, the comprehensive performance index of the spherical baffle heat exchanger with curvature radius of 0.75D is higher by 8.5%than that of the conventional segmental baffle heat exchanger.