Design And Application Of An Indoor Energy Consumption Detection System Based On Temperature Control

With the coming up with of energy conservation and emission reduction policy,reduction of building energy is increasingly becoming the focus of public attention.The work of building energy conservation should be applied in the all stages of design,construction and completion acceptance.However,nowadays there are some problems in the indoor energy detection in our county,which is disadvantageous for energy conservation.This paper wishes to design an energy consumption detection system for practical application.At first,the theory of energy consumption related envelope is analyzed.Based on this,an indoor energy detection system,which can gather the parameters of room heat consumption and other room's thermotechnical parameters,is designed through hardware equipment selection and software compiling,then the detection system has been used in the test of target room during the heating season and un-heating season.The test is in the consequence of constant indoor air temperature and constant indoor and outdoor air temperature difference.Finally,the result is analyzed by MATLAB system identification work-box to research the influence of indoor and outdoor air temperature difference on heat consumption and the transfer function between the indoor and outdoor temperature difference and heat consumption is obtainedThe main conclusions are as follows:(1)Indoor energy detection can be used to analyze whether the envelop enclosure accord with energy consumption standard.In this paper,two kinds of detecting methods has been put forwarded,the one is detecting the room energy consumption when the indoor temperature is constant,the other is detecting the room energy consumption under the constant indoor and outdoor air temperature difference.(2)The two kinds of detection method of energy consumption this paper put forwarded both can detection energy consumption of room.Of which method of controlling indoor temperature constant detection can be used to test the actual heat consumption of room,while the testing result can reflect the heat storage performance of the room,and be used to analyze the heat storage capacity of the room,and then to determine the thermal insulation performance of room enclosure structure.(3)The paper gets the mathematical model in researching the influence of indoor and outdoor air temperature difference on heat consumption by system identification,which is the model of single outputs,linear,quasi-steady and random discrete.The accuracy rate of MATLAB system identification work-box identifying parameters is 90.03 percent,which illustrates the accuracy of model.