DEVELOPMENT OF THERMAL INSULATION PROPERTIES MEASUREMENT METHOD BASED ON HEAT TRANSFER SIMULATION IN AIR PIPE FLOW

• Main Author: Ihsan, Amirul
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/46743
• Institution: Institut Teknologi Bandung

One of the most common solution used to solve issues caused by heat loss is to use thermal insulation. There is a favorable type of thermal insulation found in the market called thermal insulating coating, also known as TIC. Complete agreement had not been already found about the mechanism of how the insulating effect is formed in TIC, with some state that the excellent insulating effect is due to their low thermal conductivity value, while others state that the effect is due to TIC capability to reduce convection heat transfer on the insulated surface. There is a probability that the heat transfer mechanism in TIC is affected by the material structure on microscopic level, thus the mechanism cannot be assumed to be the same as in traditional thermal insulation. This final project research covers the determination of thermal insulation properties that can be acquired from the apparatus, along with the development of its measurement methods. The apparatus is designed in a form of a pipe system in which air flows within and the surface can be coated with thermal insulation. The apparatus is designed in ways such that a new evaluation method can be developed. A simulation program is developed to simulate which properties of thermal insulation can be acquired from the apparatus. Thermal resistance and heat loss are the two properties of thermal insulation that can be used as insulating capability indicator. These parameters is estimated by using ANFIS estimation and the Least-squares Estimation (LSE) method. Based on the evaluation, the ANFIS estimation method brought out the best estimation performance for both parameters. The ANFIS estimation method for thermal resistance (ANFIS-R) yields an error value of 0,163 m2K·W-1, while ANFIS estimation method for heat loss (ANFIS-Q) yields an error value of 12,64 W·m-1. The developed ANFIS methods are found to be quiet robust against the simulated measurement errors.