Short overview on combustion systems scale-up with emphasis on NOx emissions of gas-fired furnaces

Historically, scale-up of technologies have been a fundamental driver for successful economies in enhancing performance of applications. In the context of combustion technologies, several scale-up approaches were developed with the aim of transferring relevant characteristics of combustion systems from laboratory- to industrial-scale system. A reasonable selection of scaling approaches is required to perform a proper scaling of a combustion system. In the current study, the development of scaling methods and their use for technical applications is presented. In order to provide a guideline for the examination of combustion systems to be scaled up, common and recently published scale-up methods are compared qualitatively, as well as the investigation on scale-up of combustion chambers, is addressed. Due to the expected further technical and environmental restrictions, the focus of the implementation is directed towards NOx emissions.