공동주택에 적용가능한 에너지 저감형 설비시스템에 관한 연구

Abstract

Environmental issues such as an energy problem, a heat island, a global warming and carbon dioxide emissions have become a concern in the world. In the case of energy problems, it is essential to consider measures for effective energy consumption and develop an alternative energy because natural resources are in danger of running out. Recently, distributed energy system as energy saving method has been introduced in order to effectively utilize renewable energy or unused energy. Distributed energy system based on cogeneration system has high potential of energy saving due to utilizing waste heat from power generator effectively. To promote application of distributed energy system widely, optimal design method for it is needed.

In this study, we carried out a survey on realization between energy saving and building energy systems targeting the public and performed reliability evaluation for survey results. The survey consists of 27 questions and reliability coefficient, Cronbach's α, for realization between energy saving and building energy systems is 0.726. The results also shows that understanding for terms related with sustainable buildings is significantly associated with expectation for purchase of energy-saving systems. We also examined how energy saving buildings can be widely supplied based on realization of the public for energy consumption in residential sector. There had a increasing preference for energy saving buildings, realization for building energy systems to effectively use energy was insufficient. The public was more concerned with improvement of insulation performance than any other building energy systems for high initial cost and hoped to invest in building energy systems with both low CO2 emission and low initial cost. The results shows that energy saving have been become a concern in the public. In order to widely supply energy saving buildings, continuos education and public relations for energy saving buildings are required.

In this study, the optimal running pattern of building equipment systems, which is considered the type and number of equipment, capacity size, are determined to minimize energy consumption for the cooling, heating, hot water and electricity by MIGA. Equipment system of apartment house for minimizing primary energy consumption considering initial and running cost is also designed using MOGA. The heating and cooling energy consumption in one representative family of an objective model had a peak load while someone stays in house and heating and cooling systems are operated. This proposed method is significantly capable of determining optimal system design for saving energy in apartment house. It has been confirmed that energy for equipment systems in apartment house can be saved by using operation plan of building equipment systems. The case study results showed the result distribution of pareto optimal solutions. Since acceptable bound is determined in the result distribution in order to investment scale for energy system or regulation by government, it is expected that the method can provide various objective views to make decisions among stockholders in practical design process.