Research On The Hot Summer And Cold Winter Zone Residential Heating And Energy Saving Design

Hot summer and cold winter zone including China’s Yangtze River Valley and the surrounding area, the overall climate characteristics and performance of hot and humid summer and winter cold, day and night temperature difference is small, annual rainfall is large, the relative sunshine duration is low. But because of its geographical range, there is a big difference between the climate situation in the region, the climate of north and south direction difference is especially large.Hot summer and cold winter zone do not belong to the central heating, and survey and survey showed that not heating during the winter indoor thermal environment can not meet the requirement of the comfort, especially a strong need for heating in northern and central area residents. In recent years, the residents to take a variety of independent heating way, but it can’t match the reasonable demand, indoor thermal environment condition difference. Part of heating mode energy efficiency low and the harm to environment, the region residential not in strict accordance with the requirements of energy-saving design, but also led to a sharp rise in heating energy consumption and the indoor thermal comfort is no guarantee.On the basis of field investigation and testing in hot summer and cold winter zone residential heating and indoor thermal environment in winter, studied the residential heating partition; Summed up the heating characteristics of the region, calculate and determine the winter heating residential interior design parameters; Through the analysis of the heating demand, this paper puts forward the district residential suitable heating mode selection method; In order to improve the insulation performance, optimizes the design measures of housing and building envelope.Through on-the-spot investigation, thermal environment test, theory analysis and software simulation methods for residential building in region of hot summer and cold winter heating climatic zoning and energy-saving optimization design was studied, the main results as follows:(1)Through 12 typical cities in hot summer and cold winter areas of the field test and questionnaire, summarizes the region heating method, residential energy consumption under different heating way, building structure and present situation of the indoor thermal environment in winter, etc. Investigation and analysis results show that the regional differences of the indoor thermal environment can not meet the requirement of the comfort, indoor thermal environment parameters does not match with the actual demand, the lack of scientific guide to heating mode according to the climate characteristics.heating residential palisade structure performance is poor, therefore, it is necessary to combine climate differences divide the detailed heating partition.(2) By using the method of system clustering quantitative analysis, to determine the most of the annual coldest month average temperature, HDD18 and solar total radiation in January as heating climate division index. Put forward the "climate characteristics and administrative divisions" partition line drawing method, the hot summer and cold winter zone is divided into the North high heating zoneⅠ, Central heating transition zoneⅡ(including Ⅱa andⅡb two sub area) and South of the lower heating zoneⅢ.Rendering the heating climatic zoning map, and gives the 64 representative cities in hot summer and cold winter zone residential heating climate partition table and meteorological parameters.(3) According to the analysis of residential indoor thermal environment in winter, living behavior and dress habits and human adaptation thermal comfort characteristic, for he thermal comfort demand quite different characteristics of residents of North and south,by subjective actual thermal sensation vote AMV to evaluate indoor thermal comfort temperature, and were validated by subjective evaluation of temperature, are proposed amendments to the heating climate district residential winter indoor design temperature limits: : North high heating zoneⅠ15.0~15.8 ℃; Central heating transition zoneⅡ15.3~16.0 ℃; South of the lower heating Ⅲ area15.8~16.5 ℃,and suggest selection of lower limit value for indoor design temperature.(4)To the district heating suitability as the goal, in the bases of comprehensive analysis of climate conditions, building envelope performance, residents in the chamber, the heating efficiency and comfort factors. Proposed the heating climate partition is built and new residential suitable heating mode. And according to the characteristics of Central heating transition zoneⅡ of various ways, drawing the relative comfort and relative economic association double target C-E heating selection chart.(5)Under the condition of the heating climate partitioning to meet the thermal comfort, through quantitative analysis of influence of design parameters to residential building energy consumption,Using the DeST-h simulation analysis method, proposed the building shape coefficient, window to wall area ratio, window heat transfer coefficient of retaining structure, transfer heat coefficient and index of thermal inertia parameters such as the recommended limit value and the main building envelope energy saving optimization measures.The study of hot summer and winter cold zone heating in residential buildings and energy saving design, to master the region residential indoor thermal environment in winter characteristics provide a reference, to adapt to the climate differences in the residential thermal design and parameter choice of partition reference value, heating equipment of choice for use to provide a scientific basis, and has practical significance of optimum design of residential building energy efficiency in the region.