jaue2023032: Measured Evaluation of Circulation Heating Mode of Air-Based Solar System

Abstract

The air-based solar system is an auxiliary heating system that heats outside air on the roof's heat-collecting surface and brings it into the room. However, it has been observed that in winter, the indoor humidity environment deteriorates because dry outside air is heated and brought into the room. Therefore, instead of heating the incoming outside air, circulating and heating the indoor air is thought to be a way to control excessive drying. In this study, the performance of the pneumatic solar system was evaluated through a measurement survey. The results of the measurement study showed that the circulation heating mode increased the humidity environment in the bedroom air vent by a maximum of 0.7 g/kg absolute humidity. After the fan addition, the temperature at the air vents of the bedroom increased by approximately 2.7°C compared to before the fan addition. The temperature duct exit was lower before the fan was added, but the maximum heat collection amount was 1.4 times greater. The air-based solar system was more than effective in maintaining a comfortable indoor humidity environment by circulating and heating indoor air instead of heating the ou air.