Research and Development of Passive Solar House with Airflow System in Brick Walls

点击翻译按钮获取中文摘要

This paper reports the passive solar house with airflow system in brick walls. The indoor thermal environment of the brick house was measured. Then, temperature, humidity, indoor air quality and heating and cooling load were calculated using computer simulation software.1. Construction of the test house and predictions about the indoor thermal environment(1) A passive solar house with airflow system in brick walls was constructed. This test house has a Trombe wall, a solar collector and a cool tube.(2) Temperature and relative humidity of brick walls were calculated and the characteristic of brick walls was clarified.2. Measurement on indoor thermal environment of the test house(1) Compared to the heat load of the test house without the passive system, that of the test house with the passive system was 37% lower in summer and 35% lower in winter.(2) The effects of the passive system and the characteristics of the test house were clarified. In summer, the schedule of the cool tube and the cross-ventilation were considered. In winter, the effectiveness of the heating with the airflow system was clarified.(3) A month after the completion of the test house, the formaldehyde density in the room was over the guideline level (at the room with carpet). However, half a year after the completion, the formaldehyde density in the room was below the guideline level.3. Simulation of indoor thermal environment of the test houseThe effectiveness of the passive solar house in all over the country was clarified using the computer simulation. Several passive techniques were considered to reduce the energy of the brick house.