摘要
采用１ｍ长的新型板翅式单元作为工业用冷凝蒸发器的结构单元，对此单元试样进行了冷凝与沸腾传热特性的实验研究．实验结果表明：当热流密度达到６０００Ｗ／ｍ２时，其总的传热温差仅为１．１Ｋ，比通常结构的冷凝蒸发器的传热温差减小０．３～０．８Ｋ．根据单元试样的试验结果，选用优化结构尺寸，设计制造了用于１５０ｍ３／ｈ制氧机的新型板翅式冷凝蒸发器正式产品，对其进行了工业性试验．测试结果表明：传热系数达到７５４Ｗ／（ｍ２Ｋ），与原有产品相比，其重量减轻了３６％，体积减小了４０％．
An experimental research on the condensing and boiling heat transfer performance of a plate fin unit with 1 meter in length was made. The experimental results show that the total heat transfer temperature difference of the unit is only 1.1 K when heat flux reaches 6 kW/m 2, which is reduced by 0.3～0.5 K in comparison with current condenser evaporators. Based on the experimental results, a new type of condenser evaporator installed in an air separation plant with output of 150 m 3/h oxygen was designed and manufactured by optimizing the size of the plate fin unit. The tested results of the industrial operation performance of the plant show that both the output of gaseous oxygen and nitrogen and the purity of them reach and even surpass original level of the plant. The heat transfer coefficient of the new product is increased by 20% in comparison with the designing standard of Linde Company of Germany.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
1997年第5期64-69,共6页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金
关键词
板翅式
冷凝蒸发器
传热性能
空气分离装置
plate fin condenser evaporator air separation heat transer performance reboiler
