Study On Time-Domain Division Of Building Energy Efficiency Climate Adaptation

Building energy efficiency and the climate are closely related, any building energy-saving measures are subject to the local climate. Only by getting a thorough understanding of the local climate characteristics, we can purposefully take appropriate measures, which take advantage of favorable weather conditions and avoid adverse weather conditions. Nowadays the contradictory relationship between the human and natural environment has become increasingly prominent, and it becomes increasingly urgent that we re-examine the relationship between building energy efficiency and the climate and explore building energy efficiency climate adaptation.This paper bagan with analyzing time-domain characteristics of building energy efficiency climate adaptation, studied on building energy efficiency season and time division and building energy efficiency climatic regionalization comprehensively and systematically, explained commonality and individuality of building energy efficiency in China's different cities, provided a scientific method to grasp strategies to differing conditions in terms of time and locality involved.This paper first proposed the concept of building energy efficiency season and time.Considering the relationship between the cities and buildings, defined building energy efficiency season in city level and building energy efficiency time in building level, and discussed their specific meanings, roles and relationships respectively.The paper determined the criteria for classification. Firstly, established and amended thermal equilibrium model in neutral-hot and neutral-cold environment, determined the corresponding basic variables for the Chinese people and made numerical solution; the paper put forward the concept of apparent temperature, gave the regression formulas under different environments, and analysed the impact of humidity, wind speed and radiation on apparent temperature. By apparent temperature and the local statistical model comparison, verified adaptability and universality, obtained a generalized comfort zone which are applicable to outdoor environment and non-air-conditioned environment. Finally, identified residential building energy efficiency season and time division standard which included comfort and health index.According to typical year meteorological data, this paper made use of the division standard and divided building energy efficiency season of 270 cities in China, analyzed building energy efficiency season features and variation of 8 typical cities. Proposed division method of building energy efficiency time, analyzed the impact of different energy levels for building energy efficiency time and sensitivity of different energy-saving measures on heating period, air-conditioning period. The paper also proposed cold resisting time factorτh and hot resisting time factorτc for quantifying building climate adaptation, and proved that total annual electricity consumption, heating and air-conditioning electricity consumption significantly reduced after dividing building energy efficiency time by simulation.Based on rule of territorial differentiation, theory of building energy consumption and building energy-saving techniques, with the principle of building energy efficiency climatic regionalization, established the index system for building energy efficiency climatic regionalization systematically, and identified primary and secondary indexes theoretically. Then the paper proposed a new method which combine synthetic factor method with the leading factor method, and applied of principal component analysis and cluster analysis on building energy efficiency climatic regionalization, achieved combination of quantitative analysis and qualitative analysis.Finally, completed building energy efficiency climatic regionalization for 270 cities in China. Obtained the main climatic characteristics and geographical scope of seven climate zones through primary zoning and suitable urbans for passive solar house, air source heat pump and evaporative cooling through secondary zoning.