5th International Anatolian Energy Symposium (AES2021), Trabzon, Turkey, 24 - 25 March 2021, pp.697-706, (Full Text)
In the study, a thermo-economic analysis has investigated using Equivalent Annual Worth (EAW) Analysis Method to determine the optimum insulation thickness of pipes such as supply and return water pipes; hot water and circulation pipes existed in a low-temperature district heating network. In the analysis, energy savings over a lifetime and payback periods of the pipe insulation material (glass wool) have calculated depending on the different nominal pipe sizes (20-150 mm). The results show that the optimum insulation thicknesses found between 30 mm and 40 mm. The investment cost of the pipe insulation material changes over the range 0.53 11.78 $/m, while total energy savings of the insulation material wave to 102.17 $/m from 19.24 $/m according to the variable pipe insulation thickness like 25-100 mm. The payback periods of the different insulation thicknesses have calculated between 0.06 and 2.53 years.