A study of heat transfer property of low-fin-tube oil cooler with helical baffle;
螺旋隔板低肋管机油冷却器的传热特性研究
The comparable experimental investigation on the fouling characteristics of normal tube and twisted tubes in oil cooler was carried out.
对螺旋扁管与普通直管在油冷却器中的污垢特性进行了对比实验研究。
By testing,the structure of main parts of the modular cooling device was determined,and its key part,a new oil cooler,was developed.
通过计算分析,提出了高速动力分散式电力动车组模块化冷却装置的总体方案;通过试验研究,确定了模块化冷却装置主要零部件的结构型式;成功研制出模块化冷却装置的关键部件——一种全新结构的油冷却器。
Application of oil cooling integration power supply units with high-power;
大功率油冷式一体化电源装置的应用
The AC-motors adjustable-speed technology with variable frequency was used in oil cooling unit of refrigeration, the product is variable frequency oil cooling unit, the unit control precision and efficiency are high, this article introduce the principle and the application on variable frequency oil cooling unit.
制冷式油冷却机引入交流变频调速技术,其结合的产物叫变频油冷却机,变频油冷却机具有控制精度高、高效节能等优点,本文介绍其原理及应用。
For petal-shaped fin tube oil-cooler with helical baffle s, as the oil pressure drop in shell side is 90 kPa , the overall heat transfer coefficient of oil_cooler is 3200 W/(m2·K)， which is 15% higher than that of low fin tube oil-cooler with helical baffles, and is 5 times as large as that of smooth tube oil-cooler with segmental baffles, so it is an efficient oil-cooler.
对于螺旋隔板花瓣管润滑油冷却器， 当壳程油侧压降为90 kPa时， 其总传热系数可达3200 W/（m2·K）， 比螺旋隔板低肋管油冷却器高15%以上， 为普通弓形隔板光滑管油冷却器的5倍左右， 因而它是目前国内外传热效能最高的水冷壳管式油冷却器。
Design technologies of high power GTO converter are dealt with regarding snubber circuit technology for main circuit, GTO gate control technology, oil cooling technology and modular structure technology.
介绍了大功率 GTO变流器的设计技术 ,包括主电路吸收电路技术、GTO门控技术、油冷却技术以及模块化结构技术 ,给出了研究结果以及这些技术在其他变流器上的应
Effect of different tubes on the heat transfer and flow resistance performance of oil cooler with coronal fin tubes supported by helical baffles was studied in this paper.
油冷器广泛应用于各类化工过程及机械加工过程中。
The mechanisms of pitting corrosion of 5454 aluminum-magnesium alloy tube bundle of oil cooler in cooling water was studied.
对 5 45 4铝镁合金材质的油冷器芯子在循环水介质中发生点蚀的机理进行了研究 ,根据拟定的防护措施进行了模拟试验和防护设计 ,采用镁合金阳极配合涂层对所有冷却器实施阴极保护 ,设备使用寿命由 4年提高到 12年以上 ,取得了良好的效果。
Heat transfer enhancement of three types of tubular oil cooler ,transversally finned tube bundle supported with segmental baffles, petal - form fin tube bundle supported with segmental baffles and with nests constructed with wave form long holes has been experimentally investigated.
近年来,螺纹翅片管已在工业油冷器中应用,因其肋化系数可达2。