The Research On Thermal Design Of Building To Adapt To Behavior Energy Saving

The behavior of people in architecture is adaptive and has the characteristics of complex laws.It is obviously not in line with the characteristics of human behavior to describe the behavior of people with their work and rest.The thermal demand of building adapted to behavior energy saving is different from the natural ventilation and air conditioning conditions,and also different from the intermittent conditions,showing that there are differences in the demand for the thermal characteristics of the wall.In order to answer the question of whether the single condition thermal design method is suitable for the staggered operation of multiple conditions,we must first solve the problem of how to evaluate the thermal performance of the retaining structure under multiple conditions.Only when we put forward the evaluation indexes under both conditions can we judge the applicability of the retaining structure under different conditions.In this paper,we will focus on solving the thermal design problems under the building behavior modes in different regions,and establish a set of law analysis methods that can reflect the behavior modes of residential buildings in different regions.Based on the above methods,we will establish the evaluation indexes of building thermal design that can adapt to the behavior energy saving,and provide support for the optimization of building thermal design in different regions.Firstly,this paper makes a questionnaire survey and test analysis on the behavior energy saving of residential buildings.Through more than 700 questionnaires,the behavior energy-saving mode is divided into equipment behavior and non equipment behavior.For the equipment behavior,mainly air-conditioning behavior research,for the non equipment behavior,it involves window opening behavior,human movement behavior,plus and minus clothing behavior,etc.It can be seen from the above research that under different climate conditions,different behavior modes have different behavior characteristics,different requirements for thermal design and different thermal comfort of human body.Therefore,the thermal design strategies adopted for the corresponding behavior modes will also be different,so as to determine the air conditioning behavior of the research object in this paper.Two kinds of data are obtained through the household measurement in Guangzhou and Taizhou.One is the indoor environmental parameters,including temperature,humidity and wall temperature.The second category is behavior parameters,including air conditioning energy consumption,air conditioning operation time,personnel movement work and rest,window opening and closing time.Through the statistics of the parameters of the two kinds of regions,the behavior patterns of the two kinds of regions are obtained.The critical temperature of air conditioning in hot summer and warm winter area is 29.8?and 28.8?in hot summer and cold winter area.Secondly,the thermal characteristics of building envelope are analyzed,the thermal calculation method of building envelope under unsteady heat transfer is introduced,and the difference between natural ventilation condition and air conditioning condition and thermal environment is studied.According to the building thermal parameters and dynamic response parameters,a wtci index is established to evaluate the dynamic thermal response of the building envelope,which includes the wall temperature attenuation multiple,the inner wall temperature,the thermal inertia of the envelope and the heat transfer resistance.The results show that wtci is feasible.The characteristics and applicability of wtci index are described.This chapter is the basis of thermal performance analysis and economic optimization of building envelope.Finally,it introduces the principle of building thermal design to adapt to behavior energy saving,and makes clear that the purpose of research is to determine the thermal requirements under the influence of behavior energy saving,and then to determine the specific thermal parameters of the envelope by using the principle of dynamic thermal response of the envelope.Secondly,the concept of G-value is put forward,which makes up for the influence of the thermal inertia index on the dynamic thermal response of the enclosure.The thermal resistance index can match with the local behavior to better guide the thermal design of the enclosure.Starting from the thermal comfort and behavior energy conservation of the residents,the paper studies the optimized thermal physical properties of the enclosure structure,which can make the residents turn on the air conditioner as little as possible and make the building energy consumption as low as possible,and puts forward[D ₀]_minand[R ₀]_min as the thermal insulation control characteristic parameters of the enclosure structure,which can be used to represent that the enclosure structure meets the requirements of indoor air conditioning behavior in summer.The optimization of the thermal design of the envelope can meet the control value of the envelope,and at the same time,when a behavior energy-saving demand is determined,the demand can be transformed into the demand of the thermal design,and the specific envelope structure can be determined by using the heat protection index.In the hot summer and cold winter area,the opening time of the optimized structure air conditioner is reduced by 10.9%,which can save 18.7%energy compared with the actual structure.In the hot summer and warm winter area,the opening time of the optimized structure air conditioner is reduced by 12.2%,which can save 19.3%energy compared with the actual structure.