INFLUENCE OF AIR GAP ON INSULATING PROPERTIES OF COMPOSITE COATINGS ON PIPES FOR HOT MEDIA TRANSPORT
Andrzej Posmyk
Quarterly No. 1, 2022 pages 54-57
DOI:
keywords: composite coating, thermal insulation, air gap, energy losses, industrial pipelines, short distance transport
abstract The shrinking resources of fossil fuels and the growing pollution of the environment have caused people to begin to search for possibilities of reducing energy losses. Vast possibilities in this area lie in industrial transport, called short distance transport, as well as in civil engineering. European Union authorities set limits for the emission of harmful pollutants and energy losses. That is why the laboratories of many research centres conduct research on composite insulating materials taking into account a nanotechnology and air gaps. The paper presents the results of research on steel pipelines used in the transport of hot media, insulated with PUR shaped materials covered with a composite coating with a polymer resin matrix containing an air gap between PUR and the pipe. Such a solution makes it possible to employ the reflective properties of selected materials, which, thanks to reflection of the heat flux, returns it to the source. An air gap with the thickness of 10 mm under the conditions of the conducted research, allows the heat losses of an steel industrial pipeline to be reduced by 7.6%.