The Simulink Research About Control Of Solar Energy And Conventional Energy Coupled Heating In Cold Regions

The problem of heating in cold district of China is the high energy consumption.In our country,heating energy consumption is so much in winter Cold region and poor thermal comfortable.In some place they still use conventional energy boiler not only the heat utilization efficiency is low but also serious pollution to the environment.Solar energy resources of our country is very rich.But due to the dispersivity,low energy flow density,instability,difficult to collect and store of the solar energy resources,lead to low efficiency use of solar energy heating.The article will through the way of simulation,multiple parts of solar energy to improve efficiency of solar energy utilization and control technology is introduced into the solar energy and conventional energy(hereinafter referred to as SCECH)system,the combination of the solar energy can be fully utilized.Through the consulting material,theoretical calculation and analysis solar radiation conditions in Shenyang area so that study the change rule and use value of solar energy.Through building and analysis mathematical model of solar collector system,determine the optimal inlet flow and inlet temperature,improve the efficiency of the system.Through building and analysis mathematical model of heat storage water tank,and determine the volume of heat storage water tank.Considering the system determine the shape of a solar collector,area,the volume of the heat storage water tank and use of solar energy heating equipment.Using Matlab,Simulation studies the Shenyang area when no heating in winter room temperature as well as the basis of the dynamic characteristic of the heating energy consumption,provide theoretical support for the joint heating system.Simulation studies the Shenyang area room which is in no heating temperature as well as the basis of the dynamic characteristic of the heating energy consumption,provide theoretical support for the joint heating system.Determine the control conditions by analyzing different operating conditions of the SCECH system.Edite the control language by Matlab,and make it graphical by Simulink.Establish the control module of collectors.Using fuzzy PID to control indoor temperature adjustment improve the comfortableness.According to the control conditions of SCECH system and mathematical model of each subsystem,using Matlab/Simulink software to establish the simulation model of each subsystem and analyze the result.Establish the simulink model of couping heating system by combination and packaging the subsystem.By analyzing the dynamic characteristics of couping heating system,we know that the solar can offer 71.58%heating load at the beginning of the heating period,41.6%collector efficiency,14.0%tank heating efficiency.In the extreme weather of the middle of the heating period,the solar can offer 25.6%heating load,6.58%collector efficiency,2.89%tank heating efficiency.In the end of heating period,the solar can offer 50.7%heating load,78.37%collector efficiency,20.26%tank heating efficiency..In the whole heating period,the solar can offer51.17%heating load,37.56%collector efficiency,11.20%tank heating.