CAJ | 학술논문

为提高板式换热器对工况的适应能力，对两种不同倾角波纹板片组成的板式换热器进行研究。通过数值模拟，分析了热混合板式换热器单流道模型换热和阻力的情况，并结合场协同理论和火积耗散理论分析热混合板式换热器的综合性能。结果表明：随着入口Re的增大，压降和Nu逐渐上升，场协同数Fc逐渐降低。利用约束的平均协同角更能体现协同性随Re的变化规律。火积传递效率随Re的增大呈现震荡降低的趋势，硬板组合的传递效率要高于软板组合。在Re为1600时， Nu和压降随上壁面倾角βt的增大而增大，粘性耗散随着βt呈现先增大、后减小的趋势，且在上下倾角之和为100°时取得极大值。
위제고판식환열기대공황적괄응능력，대량충불동경각파문판편조성적판식환열기진행연구。통과수치모의，분석료열혼합판식환열기단류도모형환열화조력적정황，병결합장협동이론화화적모산이론분석열혼합판식환열기적종합성능。결과표명：수착입구Re적증대，압강화Nu축점상승，장협동수Fc축점강저。이용약속적평균협동각경능체현협동성수Re적변화규률。화적전체효솔수Re적증대정현진탕강저적추세，경판조합적전체효솔요고우연판조합。재Re위1600시， Nu화압강수상벽면경각βt적증대이증대，점성모산수착βt정현선증대、후감소적추세，차재상하경각지화위100°시취득겁대치。
In order to improve adaption to the operating conditions of plate heat exchanger ,the thermal hy-brid plate heat exchanger made up of two different plates with different values of the corrugation inclina -tion angle was investigated .Numerical simulation was conducted to investigate heat transfer performance and pressure drop characteristics of the chevron plate heat exchanger .The field synergy and entransy theo-ry was adopted to analyze the comprehensive performance of thermal hybrid plate heat exchanger .The re-sults showed that pressure drop and Nu increased with the increasing of Re,while the synergy number Fc decreased .Absolute synergy angle could reflect the relationship between synergy and Re better than syner-gy angle .The entransy transfer efficiency of high plate was bigger than low plate ,which decreased irregu-larly with the increasing of Re.Pressure drop and Nu increased with the increasing of corrugation inclina-tion angle of up plate βt .With the increasing of βt ,viscous dissipation increased firstly ,decreased after-wards,it reached its maximum when the sum of corrugation inclination angle of up plate and down plate was 100 °.