化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2014年
6期
1419-1424
,共6页
传热%板式换热器%双波纹%数值模拟%场协同原理%实验验证
傳熱%闆式換熱器%雙波紋%數值模擬%場協同原理%實驗驗證
전열%판식환열기%쌍파문%수치모의%장협동원리%실험험증
heat transfer%plates heat exchanger%double corrugated%numerical simulation%field synergy principle%experimental validation
利用 Fluent 软件对一种全焊式双波纹板式换热器的板束传热与流动性能进行数值模拟，运用场协同原理进行强化传热机理分析的同时对双波纹板式换热器进行传热实验，验证数值模拟和理论分析的合理性。结果表明：双波纹结构使得流体在流道形成湍流，减薄板片的层流边界层并且改善了主流区域的速度与温度梯度的协同程度，强化传热。双波纹板束本身的传热系数受到板束热侧入口尺寸的影响，并且在固定尺寸上达到峰值，增大冷热流体入口速度可以提升板束的传热能力，同时也受到压降增大的影响。
利用 Fluent 軟件對一種全銲式雙波紋闆式換熱器的闆束傳熱與流動性能進行數值模擬，運用場協同原理進行彊化傳熱機理分析的同時對雙波紋闆式換熱器進行傳熱實驗，驗證數值模擬和理論分析的閤理性。結果錶明：雙波紋結構使得流體在流道形成湍流，減薄闆片的層流邊界層併且改善瞭主流區域的速度與溫度梯度的協同程度，彊化傳熱。雙波紋闆束本身的傳熱繫數受到闆束熱側入口呎吋的影響，併且在固定呎吋上達到峰值，增大冷熱流體入口速度可以提升闆束的傳熱能力，同時也受到壓降增大的影響。
이용 Fluent 연건대일충전한식쌍파문판식환열기적판속전열여류동성능진행수치모의，운용장협동원리진행강화전열궤리분석적동시대쌍파문판식환열기진행전열실험，험증수치모의화이론분석적합이성。결과표명：쌍파문결구사득류체재류도형성단류，감박판편적층류변계층병차개선료주류구역적속도여온도제도적협동정도，강화전열。쌍파문판속본신적전열계수수도판속열측입구척촌적영향，병차재고정척촌상체도봉치，증대랭열류체입구속도가이제승판속적전열능력，동시야수도압강증대적영향。
Using the software Fluent,numerical simulation was performed for heat transfer of double corrugated plates of heat exchanger developed for gas heat exchange. Numerical simulation was compared with the experimental results,and analyzed with the field synergy principle. Fluid flows turbulent because of double corrugates plates. The double corrugated plates thinned laminar boundary layer and improved synergy of the velocity and temperature field to enhance heat transfer. The efficiency of double corrugated plates was influenced by the size of entrance in hot side,and might reach a peak at a specific size. Increasing velocities of both cold and hot flows could enhance efficiency,but higher pressure drop might have a negative effect.
