遠紅外線塗料提升熱傳性能分析與節能應用研究

Many researchers have proposed the application achievement in the medical and industrial fields by using resonance effect of far-infrared materials (FIRMs). However, most of the researches have not been able to clearly analyze the mechanisms of these performance improvements resulting in effect of far-infrared being questioned. The main purpose of this project is to verify the mechanism of resonance for FIRMs and the resonance of FIRMs effect on the heat transfer performance of related equipments. This project has three major directions of “Analysis and verification of resonance mechanism of FIRMs”, “Enhancement of water heater performance using FIRMs”, and “Enhancement of domestic air-conditioner performance using FIRMs”in 3-year to conduct an integrated research. In the first year of research, it was found that the three performance test results of the far-infrared coatings (FIRCs) did not show a consistent trend. According to the ranking method, the three candidate FIRMs listed in order were MWCNTs, AFIRC, and TiO2. However, the two with the highest far-infrared emissivity were MWCNTs and TiO2. In the second year, the five higher FIRMs and base coatings (Base) selected in the first year were further measured by high-end FTIR. The emissivity was found to be TiO2, MWCNTs, ZnO, ZrO2, Base, SiO2, and finally to select TiO2, MWCNTs, and Base were used as FIRCs for hot water heaters to conduct performance test of hot water heater. The research results showed that both TiO2 and MWCNTs-FIRC could improve the heating efficiency of hot water heater. Comprehensive performance indicators determined that TiO2 had the best effect of improving the performance of hot water heater. In the third year, TiO2 and MWCNTs-FIRC were coated on perforated aluminum plate (PAP), and then installed on the return air side of split air conditioner (SAC) to test the impact on SAC performance. Research results showed that MWCNTs-FIRC could best improve the cooling capacity (Qe) and efficiency of SAC. Installing PAP with MWCNTs-FIRC in SAC could increase Qe, dehumidification capacity (We) and energy efficiency ratio (EER) by 4.41%, 34.50% and 6.84%, respectively. In addition to the energy of FIR which could promote the turbulence of the airflow through the evaporator, the turbulence caused by the airflow through the PAP pores was also an important factor in improving the performance and efficiency of SAC. The application research results of this project showed that FIRCs could indeed be used to improve the performance and efficiency of hot water heaters and air conditioners to achieve the purpose of energy saving and carbon reduction.