【作者】 李文博； 金英爱； 郭立刚； 李丹丹； 尹爽；

【机构】 吉林大学汽车仿真与控制国家重点实验室； 吉林大学材料科学与工程学院； 吉林大学生物学院； 吉林大学通信工程学院；

【摘要】 吉林大学国家级创新实验《空气沿不同位置圆管自然对流换热系数的测定及准则方程的验证》拟在研究不同放置条件下自然对流换热系数及其准则方程的规律情况。以往热能实验室的自然对流实验忽略了实验管倾斜放置的情况。改进后的实验增加了多种放置角度,通过研究试验管在竖直,横向和倾斜放置的三种工况,推导出各工况下自然对流换热系数h以及相关的准则方程。实验过程严格保持实验本体的密封性和试验管壁温的恒定。实验的最后给出了实验结果和理论结果存在误差的原因。更多还原

【Abstract】 Jilin university innovation experiment The Heat Transfer Coefficient of Natural Convection under Different Locations of Pipe and the Verification Criteria Equation aims to study heat transfer coefficient of natural convection under different placed pipes and study the law of criteria equation.The case of the experimental tube tilted has been ignored in the previous natural convection experiment.A variety of angle was increased in the improved test,which were vertical,horizontal and titled.Under these conditions,the heat transfer coefficient h and the associated guidelines equation has been deduced.During the test,the sealing of experiment body and the constant of tube wall’s temperature were maintained strictly.Finally,the reason of the error in this experiment and the theoretical results has been concluded.更多还原