Study On Thermal Inertia And Heating Load Characteristics Of Residential Buildings

With the acceleration of the urbanization process and the increase of people's demand for building thermal comfort,the proportion of building energy consumption in the whole nation has increased year in years,residential building energy consumption in the total building energy consumption occupies a large proportion,in the field of building energy conservation has great potential.Residential buildings in the use of household appliances,air-conditioning refrigeration,domestic hot water supply,winter heating and so on need energy,for the north of the heating energy consumption occupies a large part,how to put the residential heat storage and winter heating in the north of the building energy-saving has far-reaching significance.In this paper,the combination of field test and software simulation is used to this paper studies the relationship between room temperature and relative thermal inertia index with the change of the internal regenerator characteristics,and studies the thermal inertia and heating load characteristics of residential buildings,and the indoor temperature,outdoor temperature before and after heating period and heating period of a residential building in Beijing,The temperature of the radiator surface is tested,and the different factors are studied with the delay time and the temperature attenuation ratio as the standard,and the influence degree of the inner regenerator and the internal heat source on the indoor temperature is analyzed.Based on the measured data,modeling and model checking of dwelling house,the indoor temperature after heating and heating is simulated,and the effect of regenerator on room temperature is studied.According to the simulation results,the change rule of thermal inertia index is obtained under the influence of regenerator heat storage.The temperature of heat sink is simulated by using Energyplus respectively,and the heat dissipation coefficient and exothermic attenuation coefficient are selected as relative thermal inertia indices.The results show that with the increase of heat supply,the attenuation coefficient of the heat accumulation decreases gradually,and the more the heating capacity is,the greater the indoor heat storage degree is,the more obvious the heat storage effect is.The study of thermal inertia index curve under same working condition shows that the lower outdoor temperature,the more intense the fluctuation,the more sensitive the response of room temperature to the heat supply,and the more obvious the heat storage function of the indoor regenerator.The relationship between heating load and building thermal inertia and outdoor temperature was analyzed quantitatively by analyzing the relation between outdoor temperature,indoor temperature and heat supply in the whole heating quarter.