"Insulating a hot surface against ambient temperature is common with steam pipes, boiler or furnace walls. Most recommendations in this regard refer to manufacturers tables and do not calculate the required most economical thickness or check on financial attractiveness. It is pointed out that there is only one correct insulation thickness as shown in the picture. It is the thickness where the sum of the fuel cost due to losses and the annual depreciation costs of insulation is the smallest, (the lowest point of curve 3). This lowest point of the curve is not necessarily the insulation thickness where curve 1 and 2 intersect."

Technical committe observations (Click here)