Energy Consumption Simulation Analysis And Energy Saving Optimization Of Air Conditioning System In A Public Building In Changsha

Building energy efficiency is more and more important today,the problem of building energy consumption is also more and more attention from scholars and research,and the energy consumption of HVAC system in the whole building energy consumption accounted for more than 60%,and it plays an irreplaceable role in our daily life.In all buildings,the energy consumption of large public buildings can not be ignored,the data show that the construction area of less than 5%of large public buildings can reach 25%of all building energy consumption.Therefore,we must take effective measures to improve the energy efficiency of HVAC systems,to achieve energy saving in the field of HVAC,which has a very important practical significance for the entire building energy saving field.Through a lot of reading the relevant literature and analysis software of energy consumption in Changsha heart star International Building simulation analysis using DeST to simulate energy consumption.By adding the air conditioning system of building model,system analysis,system analysis and analysis of water chamber,air handling,analysis of energy consumption and economy,finally choose a comfortable to meet people system demand and energy saving,and draws a series of conclusions,and on this basis for further optimization,including the selection of the appropriate window than wall,glass,and heat recovery system,to reduce the energy consumption to a minimum.The first chapter of this thesis mainly introduces the research background and the research status of building energy efficiency at home and abroad;In the second chapter,the simulation software of DeST energy consumption is introduced briefly,and the load of the heart star International Building is simulated to provide the original data for energy consumption simulation;In the third chapter,three different air conditioning schemes are given,and the system scheme is analyzed respectively,and get the satisfaction result of different scheme in the same room;The fourth chapter carries on the choice and the determination of the cold and heat source plan,and carries on the simulation to the water system,obtains the water system energy consumption situation,carries on the economic analysis on this foundation,finally determines the plan two is the best plan;The fifth chapter carries on the further optimized design to the plan two from the envelope structure and the air conditioning system two aspects,causes it to achieve the most energy conservation effect.This paper analyzes the energy saving optimization of existing large public buildings in Changsha area,which has a certain representative,and it has certain guiding significance to the energy saving transformation and operation management of typical public buildings in Changsha area.