주거환경 개선을 위한 태양열시스템 적용과 하절기 과열방지에 관한 연구

Abstract

This study is for getting basic data through grasping the obtained heat by structure of each unit and the effects of environment improvement based on judgement for whether or not a solar heating system of renewable energy. Application of renewable energy in terms of the economy continuously rising international energy prices and reduce operating costs, so long as the building can be very advantageous in terms. Reduce energy consumption in construction and environmental improvement plans for the construction of a number of ways to consider the elements of the system's high efficiency and renewable energy such as solar thermal systems are also important, but how to use should be actively considered. The reflection plate in twin-glass evacuated tube solar collector is controlled to reduce the overheat during the summer time. The sliding type and folding types are suggested and tested. The sliding type changes the plate angle and the folding type changes the opening angle of the reflection plate. By scattering the focus of the reflected radiation from the reflection plate, the temperature rise of the working fluid can be reduced. The sliding type shows the best results in overheat reduction. When solar radiation is 900 W/㎡, the temperature rise in one sliding type collector is reduced about 2℃ compared to that of the normal solar collector. When this method is applied to seven series-collectors in the field, the reduction of temperature rise during the summer time should be significant.