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Материалы теплообменников

20.10.2018 Раздел: Сантехника, водоснабжение Комментарии: (63) Размер текста: A+ / A-

Для изготовления теплообменного оборудования, как правило, используют углеродистые и низколегированные стали, нержавейку, латунь, медь, чугун или титан. Поскольку основной рабочей частью теплообменников является трубный пучок и теплообменный процесс происходит именно за счет него, то необходимо быть уверенным в качестве этой системы.

Выбор материала зависит от многих факторов, одним из основных показателей пригодности материала для производства и изготовления теплообменников являются механические свойства, такие как:

  • пластичность
  • скорость изнашивания
  • удобство при монтаже и сварке
  • отсутствие внутренних дефектов и однородность
  • стойкость к резким перепадам давления и температур
  • устойчивость структуры в процессе механических нагрузок
  • стойкость к коррозии в условиях высоких температур и агрессивных сред
  • прочность материала в условиях высокого давления и температурного режима

Рассмотрим наиболее популярные материалы, из которых производят трубные пучки и теплообменники.

vodianoy_kalorifer

Медь

За счет того что медь обладает очень большой теплопроводностью, то изготовленное из нее оборудование имеет высокий коэффициент теплопередачи. Благодаря пластичности данного металла, возможно изготовление из него теплообменника с высокой степенью оребрения.

Стоить отметить и габариты таких агрегатов – они имеют малый вес, небольшой объем и весьма компактны. Медь зачастую подвластна коррозии и омеднению, но если придерживаться профилактических мер, этого можно избежать. Пожалуй, основной недостаток такого оборудования – высокая цена.

Латунь

Перед тем как использовать латунный теплообменник, необходимо провести анализ жидкости, с которой аппарат будет взаимодействовать. Латунь используется с пресной водой без примесей и солей, в противном же случае пучок труб начнет ржаветь и приходить в негодность.

Несмотря на то, что тепло- и электропроводность латуни ниже, чем у меди, она обладает более высоким показателем прочности и коррозостойкости. Некоторые латунные сплавы устойчивы к морской воде и перегретому пару – их прочность к специфическим средам и условиям определяет сферу их применения. Более того, латунь значительно дешевле меди, также смотрите где купить Вентиляторы nicotra.

Нержавеющая сталь

Теплообменники из нержавейки обладают максимальной стойкостью к коррозии и используются в системах с жидкостями, по химическому составу не подходящими ни меди, ни латуни. Это может быть вода с высокой кислотностью, жесткостью, щелочностью, с большой концентрацией сульфатов. Именно нержавейку используют для производства труб, по которым будет течь соленая вода с различными примесями.

Кроме того, нержавейка сочетает достоинства чугуна и стали: она долговечна, невосприимчива к перепадам температур и обладает малой инертностью. Она также не выделяет ионы металла, которые окрашивают и загрязняют воду и обладает более доступной ценой.

Важно помнить, что выбор материала для теплообменника зависит от определенных параметров и в каждом случае индивидуален. К данному вопросу стоит подходить с особой тщательностью, чтобы теплообменник прослужил максимально долго и эффективно, более подробнее смотрите на сайте www.a-lpha.su.

Материалы теплообменников Reviewed by Vash-Remontik.ru on . Для изготовления теплообменного оборудования, как правило, используют углеродистые и низколегированные стали, нержавейку, латунь, медь, чугун или титан. Посколь Для изготовления теплообменного оборудования, как правило, используют углеродистые и низколегированные стали, нержавейку, латунь, медь, чугун или титан. Посколь Rating: 0
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