Study On Solar Energy Dehumidification And Evaporative Cooling Radiating Plate Displacement Ventilation And Air Conditioning System

With the rapid development of economy and environmental pollution,resource shortage contradictions gradually increased,the energy-saving emission reduction and renewable energy to become the main way to solve the resource advantages of solar energy to it.Richly endowed by nature,has become a new hotspot of research in the field of new energy.In order to achieve energy-saving emission reduction and utilization of renewable energy,this paper presents a the new air conditioning system,air conditioning system of displacement ventilation dehumidification and evaporative cooling panel.This paper describes the working principle of the system,and established the mathematical model and the coupling model of the various components of the system.Through the preparation of the simulation program of the system mathematical model is established by MATLAB simulation software,simulation analysis and energy saving potential is carried out.Firstly,the effect of evaporative cooling radiation plate and desiccant wheel on the performance of evaporative cooling radiating plate and desiccant wheel is analyzed.The results show.1.The evaporative cooling radiating plate:Passage width,air velocity,indoor temperature,humidity,The effect of radiation on convection cooling capacity and radiation conduction plate is the same.With the increase of their data,the convection cooling capacity decreases and the average roof temperature increases.2.The desiccant runner:As the air inlet temperature is treated in the dehumidification zone,the humidity increases.The air humidity increased after treatment,and decreased with the decrease of air inlet temperature or humidity in regenerated area.Secondly,taking an office building in Beijing as an example,the DEST software is used to simulate the hourly load of the office building for 8760 hours per year with the step size of 1.The results show that the maximum cooling load in summer is 71kWh.The maximum heat load in winter is 50kWh.Then the system is simulated year by year by using MATLAB software.The solar energy and electric energy are used to drive the desiccant runner and evaporative cooling radiator displacement ventilation air conditioning system and traditional air conditioning system respectively.The result shows:The annual sensible heat recovery of the sensible heat recovery runner is 5.98×10~3kW;The annual heat transfer of solar heaters is 8.52×10~3kW;Evaporative cooling radiating plate can bear indoor sensible thermal cooling load of 6.85×10~3kW in summer.In summer;the energy saving rate of solar driven dehumidification and evaporative cooling radiation plate displacement ventilation and air conditioning system is 27.9%;Power driven dehumidification and evaporative cooling radiating plate displacement ventilation and air conditioning system energy saving rate of about 10.2%.