Research Of Air Conditioning Operations Based On Heat Storage Of Building Envelope

Faced with the growing demand for fossil energy and the environmental pollution it brings,our country has introduced a series of reform measures to promote the transfer of energy demand to the national grid.Under the ever-increasing demand for electricity,unrestricted increase in power generation capacity will result in huge waste of resources.Therefore,users reasonably reduce the peak load demand of the power grid,which is of great significance to alleviate the contradiction between urban power supply and demand.At the same time,with the increase of energy-saving standards,the extensive use of highheat inert materials has enhanced the heat storage of the wall.This puts new demands on the transformation of air conditioning operating mode.Firstly,this paper introduces the research and application of wall heat storage at home and abroad,and also introduces the research status of air conditioning operation using wall heat storage,emphasizing the influencing factors of indoor comfort and the measures of air conditioning regulation in related research.Secondly,taking the heat transfer and heat storage law of the office building model in Beijing as the research focus,the external insulation,internal insulation and intermediate(sandwich)insulation forms of the wall are compared.Under natural conditions,the heat conduction,heat storage and energy consumption of the three walls were analyzed,and the law of heat transfer and heat storage in the wall period was obtained.It was found that the indoor temperature changes were different,and the air conditioning operation was simulated.It was found that the load distribution ratio of the whole day was small,and the air conditioning regulation was the same.The comfort law of different structural buildings is discussed.By analyzing the indoor uncomfortable hours and indoor comfort deviation,it is found that the thickness of the outer insulation layer is constant,the thicker the external insulation,the better the comfort of the room and the more energy consumption.low.When the external insulation is selected,appropriately reducing the thickness of the insulation layer and increasing the thickness of the structural layer also contribute to improving the comfort of the room and reducing energy consumption.Finally,combining the comfort changes and load laws of different wall structures,the pre-cooling mode and peak-shaving mode are proposed and the result-oriented pre-coolingpeaking mode is creatively proposed.Through points of the indoor temperature,comfort,peak load transfer ratio,energy consumption and cost indicators,analyze the different performance of the three modes of air conditioning season from multi-dimensional comparatively.Otherwise,the air conditioning operation modes with different requirements are obtained.