Engineering Physics Annotation << Back On possibility of development of new indices of ultraviolet radiation for zones of intensive combustion of different types of fuel R.T. Rajabli In the article the new indices of Sun UF radiation of is suggested for industrial zones having intensive combustion of fuels. The proposed indices has an extremal feature and makes it possible to find conditions, leading to optimal ratio of parameters. Keywords: UV radiation, combustion of fuel, optimization. E-mail: rroya@yandex.ru.