건물설비시스템 통합제어를 통한 여름철 냉방에너지 절감에 관한 연구

Abstract

Abstract

Cooling Energy Reduction by Cooperative Systems of Office Buildings in Summer

Nam, Hyeong Gon Advisor : Prof. Hwang, Tae Yon Department of Architectural Engineering Graduate School of Chosun University

Key words : Active Building Equipment System, Cooling Energy, Cooperative Systems, Office Buildings, Energy Saving

In recent years, the use of building energy has been increasing by satisfying the comforts of residents and by increasing the heating and cooling load caused by global warming. Measures for the development of renewable energy and the over-consumption of energy are internationally key items in the political, economic and environmental aspects . Therefore, energy related research is actively underway in Korea. Among them, the building sector accounts for 23% of the total energy consumed in Korea, and it is a cost-effective alternative to other industries, which is a priority for energy saving policy. office building occupies a relatively high proportion of 36% of the total building energy. The pattern of users is simpler than that of residential facilities, and it is expected that the effect will be maximized when applied to the algorithm. especially, the energy used for air conditioning and lighting occupies about 80% of the total building energy, so it is demand to reduce the energy consumption through the integrated control algorithm developed in this study.

However, absorbing solar energy to reduce lighting energy increases the energy consumption of the cooling energy and reduces the cooling energy by reducing the solar energy, which increases the energy consumption of the lighting and makes the correlation between the air conditioner and the lighting difficult. Therefore, in this paper, we propose an algorithm to control the inflow of solar radiation using a shading device, to create an environment suitable for office buildings in terms of air conditioning and lighting, and to integrate and control active facilities systems. The automatic control algorithm of the intelligent shading system according to the first direct sunlight inflow depth is calculated based on the sunlight angle between the building and the sun, and the algorithm logic is set. In order to enable intelligent shading control corresponding to the external environment, Based on Hour clearness index() The second, air conditioning system control algorithm developed an analytical formula for the predicted solar radiation entering the room. Based on this, the solar radiation inflow was predicted and the indoor heat load was calculated through the solar heat acquisition coefficient. We developed an air conditioning control algorithm that responds to the calculated thermal load. The third, the control algorithm of the lighting system converts the indoor solar irradiance to the indoor sunrise quantity by applying the Perez Model, predicts the incoming sunshine quantity, and sets the control correction value of the artificial lighting dimming control system based on the predicted incoming. Finally, based on the control algorithm for each element of the active building system developed in this study, we developed an algorithm that can control the awnings, lighting, natural light, and air conditioning system integrally. As a result of this test-bed demonstration, the energy consumption of the active building system prove that reduced by about 20% by the control method alone. The 20% reduction of building energy through the integrated control algorithm means that the zero energy building certification system is equivalent to one grade, and it is expected that the expansion of the entire building will greatly reduce the share of renewable energy.