The use of intermediate emitters radiators in boilers
DOI:
https://doi.org/10.15587/1729-4061.2012.5768Keywords:
furnace, emitter, heat exchange, degree flare blackness, flare temperature, heat transfer, coefficient of radiation, burner, nitrogen oxidesAbstract
The article concerns the possible economic and environmental effects of establishing of intermediate emitters and shielding of walls of the boiler furnace.
Intermediate emitters are made of fireproof materials or heat resistant metals or introduced into the flare as a powder of inert substance. The principle of the emitters consists in perception of heat by selective radiation and convection from the combustion products, and transmission it to water-cooled surfaces that are located in the furnace.
The method of calculation of intermediate emitters consists in determination of the increase of the coefficient of the furnace radiation in the presence of intermediate emitter. The heat transfer involves the participation of the flare, water-cooled surfaces and intermediate emitters.
The use of intermediate emitters in the design of heating and small industrial boilers on the natural gas will reduce the metal expenditure to manufacture the boiler and increase its efficiency. In addition, the optimal location of intermediate emitters that additionally take away the flare heat reduces temperature and NOх emissions into the environmentReferences
- Нижник С.С., Сигал И. Я., Овчар В.М., Сигал А.И., Падерно Д.Ю., Марковський А.В. Промежуточные излучатели для отопительных и промышленных котлов, ИГ НАНУ г. Киев, ИПЭ г.Киев
- Звіт про науково-дослідну роботу. Розробка, дослідження та впровадження мало витратних технологій зменшення парникового ефекту при спалювані газу в Україні. І. Я. Сігал, Київ – 2002.
- Блох А. Г. Теплообмен в топках паровых котлов. — Л.: Энергоатомиздат. Ленингр. отд-ние, 1984. — 240 с
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