Reducing surface heat loss in steam boilers

Abstract

In this study, heat losses occurring on the outer surface of a steam boiler used in the distillation process in a textile company are discussed in detail. All surfaces of the boiler were scanned with a thermal camera to determine the non-insulated or poorly insulated areas. By drawing the schematic image of the boiler, the side surfaces, front cover, back cover, and parts of the smoke pipe were shown in different colors, and the temperature distributions in different parts of the boiler were revealed. Although most of the heat loss occurs on the side surfaces of the boiler, it was observed that these surfaces were already insulated. For this reason, a Pareto diagram was prepared according to the surface temperature to get an idea about where to start the improvement studies. Especially on the front and back cover surfaces, high-temperature values were measured and, it was determined that the heat loss on these surfaces was also at high levels. It was suggested that high-temperature surfaces should be covered with insulating jackets and pads, and sample applications were shown. The energy savings to be achieved and the payback period of the investment was revealed.