摘要
折流杆冷凝器是一种新型的管壳式换热器.本文针对折流杆冷凝器的结构特点,提出了折流杆冷凝器壳侧混合蒸气冷凝传热的计算方法,并通过实验加以验证.实验用折流杆冷凝器有两台:一是圆型结构,含折流圈9个、换热管37根,管尺寸φ19×2mm; 另一是矩形结构,含折流圈10个、换热管14根,管尺寸φ25×2.5mm,壳体前侧板设有五块直径为100mm的视镜,以观察冷凝流型.实验用工作介质为乙醇-水、溶剂汽油和溶剂汽油-氮气.在重力控制区和过渡区,实验所得传热系数值与理论计算值的偏差均小于32%.
The rod-baffle condenser is a new type of shell-and-tube heat exchanger. In the present paper, a method for calculating heat transfer coefficient of the shell-side condensation of vapor mixture is proposed according to the structural characteristics of the rod-baffle condenser and experimental verification is given.
The rod-baffle condenser can be classified into circular and rectangular types. The circular one consists of 9 rod-baffle rounds and 37 tubes φ19×2 mm in size. The rectangular one consists of 10 rod-baffle rounds and 14 tubes φ25×2.5mm in size. In the front of the shell there are 5 glass windows for observing flow pattern during condensation. The working media in the experiment are ethanol-water, gasoline and gasoline-nitrogen systems.
In the gravity-controlled region and transition region, the differences between calculated values and theoretical values are less than 32%.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1990年第4期403-411,共9页
CIESC Journal
