| Keywords |
Natural ventilation ; Passive solar collector ; Tracer gas |
| Abstract |
This study evaluates ventilation performance for apartment using solar radiation in order to improve energysavings and indoor air environment. Field measurements were performed in a full-scale mock-up model. A solar col-lection device and ordinary device for natural ventilation were installed in each room. Temperature and airflow velocitywere monitored in each five minutes. Solar radiation and daylight illuminance were also measured. The concentrationof indoor air for two conditions was monitored using a multi-gas monitor and tracer gas. The air change rates perhour (ACH) under the conditions were computed based on the concentrations. The air change rates per hour (ACH)using solar radiation exceeded the required air change rate per hour was linearly proportional to the solar radiation.The ventilation device using solar radiation contributed to provide better thermal environment with energy savings. Inaddition, it achieved better indoor air environment for residents compared with the natural ventilation device. In sum-mary, the ventilation device using the solar collection device used in this study appears to provide increased ventilationrate per hour continuously. |