滨海电厂凝汽器及相连管道的腐蚀与防护

介绍了滨海电厂凝汽器及相连管道的腐蚀原因。根据凝汽器类型的不同，就各自的防腐蚀设计进行了分析，并介绍了相关的应用事例，指出通过阴极保护和防腐蚀内衬工艺的联合使用，可有效解决凝汽器及相连管道的腐蚀问题。     

凝汽器铜管化学镀Ni-P后耐蚀性的电化学评定

用电化学直流测试技术及交流阻抗技术评定了高浓度Cl^-条件下经化学镀Ni-P表面处理后的凝汽器铜管的耐蚀性，证明经化学镀Ni-P后铜的耐蚀性提高。     

Studies on condenser-objective lenses

Scaling down the dimensions of a conventional magnetic objective lens to reduce aberrations is studied in detail. The values of other aberration coefficients for optimum lens size corresponding to desired minimum aberration are estimated. The possibility of using iron-free condenser–objective lenses at high voltage is examined.     

Effects of filling ratio and condenser temperature on the thermal performance of a neon cryogenic oscillating heat pipe

A cryogenic oscillating heat pipe (OHP) made of a bended copper capillary tube is manufactured. The lengths of the condenser section, adiabatic section and evaporator section are 100, 280 and 100 mm, respectively. Neon is used as the working fluid. Effects of liquid filling ratio and condenser temperature on the thermal performance of the OHP are studied. A correlation based on the available experimental data sets is proposed to predict the thermal performance of the neon cryogenic OHP with different filling ratios and condenser temperature. Compared with the experimental data, the average standard deviation of the correlation is about 15.0%, and approximately 92.4% of deviations are within ±30%.     

热回流式冷凝器的设计

热回流式冷凝器可以形成接近于冷凝气体沸点温度的热回流，采用气液两相分路结构，讨论了此种冷凝器换热面积及液泛极限速度的计算。     

660MW超临界机组凝汽器补水雾化改造

化学补水的方式对机组的安全性和运行经济性都有影响,文中阐述了马鞍山当涂发电有限公司#1机组化学补水系统存在的问题及化学补水系统的雾化改造方案。分析了化学补水雾化改造后的各种效益。对提高机组运行的安全性和节能降耗有借鉴作用。     

汽轮机凝汽器泄漏的涡流检测与分析

为查找凝汽器泄漏原因,对已经发生泄漏的凝汽器钛管周围管进行了涡流检测。结合两个典型的涡流阻抗信号,利用标准检测程序功能制作了标定曲线,可准确计算钛管减薄量。结合视频功能,得出影响凝汽器钛管泄漏的原因在于外壁缺陷与机组启停产生的应力共同作用,而外壁缺陷的根源是与支撑隔板间的碰损,支撑隔板安装的垂直度及每行的同心度影响着支撑隔板与钛管的装配间隙,在机组运行中隔板会导致钛管的外壁缺陷。     

冷凝器和蒸发器流程布置的研究现状与发展前景

本文对国内外冷凝器和蒸发器流程布置的研究现状与发展前景进行了总结和阐述,并对该领域研究存在的问题和将来的研究方向作了分析讨论,为进一步开发利用冷凝器和蒸发器提供参考。     

Experimental and numerical study on microchannel and round-tube condensers in a R410A residential air-conditioning system

The effect of different type of condensers on the performance of R410A residential air-conditioning systems was investigated in this study. Two R410A residential air-conditioning systems, one with a microchannel condenser and the other with a round-tube condenser, were examined experimentally, while the other components of the two systems were identical except the condensers. Two condensers had almost same package volumes. The two systems were operated in separate environmental chambers and their performance was measured in ARI A, B, and C conditions. Both the COP and cooling capacity of the system with the microchannel condenser were higher than those for the round-tube condenser in all test conditions. The refrigerant charge amount and the refrigerant pressure drop were measured; the results showed a reduction of charge and pressure drop in the microchannel condenser. A numerical model for the microchannel condenser was developed and its results were compared with the experiments. The model simulated the condenser with consideration given to the non-uniform air distribution at the face of the condenser and refrigerant distribution in the headers. The results showed that the effect of the air and refrigerant distribution was not a significant parameter in predicting the capacity of the microchannel condenser experimentally examined in this study. Temperature contours, generated from the measured air exit temperatures, showed the refrigerant distribution in the microchannel condenser indirectly. The temperature contours developed from the model results showed a relatively good agreement with the contours for measured air exit temperatures of the microchannel condenser.     

风冷凝器在蒸发冷却变压器系统中的应用实验研究

对风冷凝器在蒸发冷却变压器系统模型中应用进行了研究。