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近几年来,抗蚀性能优越的钛管,大量的应用在化学、石油工业的热交换器上。另外,火力发电厂蒸汽轮机使用的冷凝器的氨腐蚀问题,在冷凝器的空冷部位应用钛管的例子正在增加。但是,有关全部冷凝管采用钛管或全钛冷凝器在日本尚未得到实际应用。从技术方面着眼,为了调查全钛冷凝器最合适的设计规范,有必要确定管内流速和转热系数与冷却水压力损失之间的关系等等。这些方面,已有的HEl(热交换协会)标
In recent years, superior corrosion resistance of titanium tubes, a large number of applications in the chemical, oil industry heat exchanger. In addition, the problem of ammonia corrosion of condensers used in steam turbines of thermal power plants, and the use of titanium tubes in air-cooled parts of condensers are increasing. However, the use of titanium tubes or full-titanium condensers for all of the condensers has not yet been put into practical use in Japan. From a technical point of view, in order to investigate the most appropriate design specifications for all-titanium condensers, it is necessary to determine the relationship between flow rate and heat transfer coefficient in the tube and pressure loss in the cooling water. These aspects, the existing HEl (heat exchange association) standard