Galushchak I. Increase of effectiveness of convective surfaces of heating of steam boilers in heating and gas supply.

The aim of the thesis is an increase of effectiveness of convective surfaces of heating of steam boilers in heating services by force of the use of tubes with punched spiral-tape finning. It was found scientific background of relevance of the use of such surfaces of heating, there was determined the dependence of the races of the heating effectiveness on geometrical parameters of finned tube. Experimental researches and Improves methods of engineering calculation of the heat transfer and aerodynamically resistance in staggered and in-line bunches with punched fines were made. Intensity of heat transfer was increases in staggered bunches by 32…43%, in in- line bunches by 17,1…32,8%, with increasing of aerodynamically resistance by 18…50% and 11…40% accordingly.