Benefits Analysis of Solar Low-carbon Public Buildings in Hunan District

Abstract

Keywords: benefits analysis; solar technology; Hunan district; public buildings Abstract. Construction is one of the three big energy consuming industries, energy efficiency in buildings has become a issues that must be considered in the sustainable development of China's economy. This paper takes the low-carbon public building as the main research object, combined with the theory of life cycle, analyzes the technology benefits of solar-thermal according to incremental cost theory. Through the information research and field survey, gathered in an office building in Hunan area information on project-related design and energy-saving technology. And the examples are given and analysed. 1 Background and Significance With the development of global economic prosperity and to speed up the integration process steps, the survival of human activities to the earth's environment, climate has brought serious challenges.Construction is one of the society's three big energy consuming industries. Energy consumption of the building accounts for one-third of the total energy consumption of the whole society. Especially the large public building's electricity consumption per unit area is about 10-20 times the residential(1). Therefore, public buildings contained huge energy saving potential to be excavated. The core content of Low is building which can reducing carbon dioxide emissions. At present, the generally accepted definition of the low carbon building is a building material manufacturing, building construction and operation process, increased energy efficiency, reduced fossil energy use(2). Solar low-carbon building refers to the use of building heating, hot water, air conditioning, lighting and other functions achieve through the solar energy . Solar technology belongs to active low carbon technology, mainly through thermal use and photovoltaic use to achieve. The thermal is mainly used for heating and cooling, The photoelectric is mainly used in solar lighting. The application of thermal technology in Chinese is very broad, with the industrialization and commercialization of a good foundation. Solar photovoltaic technology, because of its high cost, is not so popular as thermal technology. In this paper, the study area of Hunan province is divided into central China in hot summer and cold winter zone according to the standard of building climate zoning (GB50178-93). And it is divided into in hot summer and cold winter area according to civil building thermal design code (GB50176-93). The main characteristic of the area is: warm climates, four distinct seasons; sufficient heat, rainfall concentration; Temperature is changeable in spring, summer and fall drought; The cold period is short, heat periods is long. This paper suppresses research into economic evaluation of solar low-carbon public buildings in the whole life cycle.