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Тест биметаллических радиаторов

15.03.2012 Раздел: Климатическая техника Комментарии: (63) Размер текста: A+ / A-

тест биметаллических радиаторовТест биметаллических радиаторов проводится по методике, которую специально разработал НИИ сантехники. В этот тест входят тепловые, эксплуатационные и прочностные испытания.

Целью теплового тестирования является определение нескольких параметров. Во-первых, коэффициента изначального теплового потока. Этот показатель отражает тепловую мощность радиатора. При этом измеряется теплоотдача каждой секции прибора.

Во-вторых, коэффициент теплоотдачи. Этот сложный интегральный показатель рассчитывают специалисты, чтобы узнать эффективность конструкции биметаллического радиатора. В-третьих, рассчитывается теплоплотность. Нужный всем показатель, так как от него зависит ширина радиатора. Чем выше теплоплотность, тем  короче погонный метр. И, наконец, удельный вес прибора. Этот показатель в основном важен для оптовых покупателей, которые в большом количестве заказывают отопительное оборудование, при планировании перевозки.

Для тестирования, модели приборов устанавливают на неделю в специальной термической камере, где условия эксплуатации схожи с реальными. Радиатор устанавливается как бы под окном у холодной стены, на высоте в метре от пола. К радиатору подключают испытательный стенд, который обеспечивает в нем движение сверху-вниз при нормальных условиях. В таких условиях температура в радиаторе выше на 70 градусов, чем в камере, а атмосферное давление составляет 760 мм рт.столба. Соединительные места между стендом и прибором изолируются, подающий и обратный трубопроводы «закольцовываются». Тепловая мощность измеряется, как разница теплового потока системы, который измеряется ваттметром, и теплопотерей стенда.

тест биметаллических радиаторов

Эксплуатационное тестирование создано, чтобы проверить, как будет вести себя биметаллический радиатор в течение многих лет. Для этого имитируются процессы нагрева и охлаждения. В биметаллических радиаторах из-за смены температур стальной сердечник смещается в алюминиевом корпусе и приводит к неплотному прилеганию материалов. Это понижает тепловые характеристики радиатора.

Экспериментальный стенд запускает поочередно в радиатор воду с температурой +95 градусов и +10 градусов. Температура чередуется примерно 360 раз. Это количество соответствует примерно двадцати годам службы прибора. Затем прокачка водой проводится снова. И разница между испытаниями считается эксплуатационной стабильностью радиатора.  В идеале разница не должна превышать 2%.

Тестирование прочности проводится отдельно для рабочего давления и для опрессовки.

Для начала стоит пояснить, что максимальное рабочее давление устанавливается заводом-изготовителем из расчета особенностей конструкции и материала. Рекомендуется выбирать радиаторы с максимумом, который втрое больше рабочего. При этом, чтобы гарантировать безопасную эксплуатацию, завод испытывает радиатор давлением в полтора раза выше обычного.

Давление при опрессовке – это такое максимальное давление, которое создается при установке радиатора и опрессовке системы. Как правило, максимальное давление определяется самым слабым элементом системы – термостатом. Опрессовка проводится под давлением, в полтора раза выше рабочего. После установки монтажник должен под сильным напором спустить воду, чтобы проверить герметичность.

Тестирование радиаторов заключается в том, что сначала их тестируют под рабочим давлением и визуально осматривают на наличие протекания. Затем давление поднимают в полтора раза и до установленного завода максимума. Тест может и превысить указанный максимум.

В заключении стоит отметить, что еще ни одна современная модель биметаллического радиатора не разрушилась при таком испытании.

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Тест биметаллических радиаторов Reviewed by Vash-Remontik.ru on . Тест биметаллических радиаторов проводится по методике, которую специально разработал НИИ сантехники. В этот тест входят тепловые, эксплуатационные и прочностны Тест биметаллических радиаторов проводится по методике, которую специально разработал НИИ сантехники. В этот тест входят тепловые, эксплуатационные и прочностны Rating:
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