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摘要
Aiming at the passive transmission and innovative utilization of low-grade heat sources such as solar thermal energy，a novel thermo-activated active insulation wall based on the flat-plate heat pipe array（FPHP）is proposed. The effects of inclination and heat source temperature on the energy transmission performance of FPHP are tested，and the thermal performance of the thermos-activated active insulation wall and ordinary energy-saving wall are compared. The results show that the measured effective thermal conductivity of the FPHP ranges from 4400 to 35400 W/ （m·℃）after the low-temperature simulated heat source is applied to the evaporation section. Therefore，the FPHP inclination can be reduced to improve the effective thermal conductivity when it is applied to the active insulation scenario，while the FPHP inclination can be increased when it is applied to the auxiliary energy supply or direct energy supply scenario to achieve similar purposes. Besides，the injection of low- temperature heat sources such as solar thermal energy can significantly improve the thermal performance of the thermo-activated active insulation wall. When the injected heat source temperature is 25 ℃ and 35 ℃，the measured U value can be reduced from 0.50 W/ （m2·℃）to 0.19 and -0.08 W/ （m2·℃），respectively. ? 2023 Science Press.
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