Application Research Of Temperature And Humidity Independent Control Of Air-conditioning System Based On Ground Source Heat Pump

At present,our country construction scale increases year by year,building energy efficiency is the most effective way to energy conservation and emissions reduction,central air conditioning energy consumption accounts for the proportion of building energy consumption is more and more heavy,so to reduce building energy consumption of air conditioning is imperative.Conventional air conditioning system energy loss and the disadvantages of poor air quality,people demand for air conditioning systems tend to be more energy efficient and can provide better air quality.Ground source heat pump is a kind of using green energy air conditioning technology,temperature and humidity independent control air conditioning system have an advantage in saving energy and improving air quality.Combining of these two kinds of air conditioning technology,the paper puts forward a temperature and humidity independent control air conditioning system based on ground source heat pump,which is beneficial to the innovation and development of air conditioning energy saving technology,and conforms to the development trend of air conditioning technology.Temperature and humidity independent control system is a design concept which separate temperature and humidity control of the air conditioning.Energy-saving advantages of temperature control system is the use of high temperature cold source,so the use of ground source heat pump buried pipe straight for the cold water as the cold source of temperature control system,using liquid desiccant fresh air handling crew indoor moisture load;At the same time,the use of ground source heat pump heating function for making living hot water in winter,so as to solve the problem of soil source heat balance throughout the year.Of a hospital complex building construction is carried out by load analysis,separate building heat and moisture load calculation,determine the application of temperature and humidity independent control based on ground source heat pump air conditioning system design scheme,puts forward the design of the temperature and humidity air-conditioning steps and main equipment selection scheme.In this paper,through the study of the theoretical analysis of the case engineering system energy saving,respectively from the aspects of cold source,air terminal,distribution system cop,calculating the concluded that temperature and humidity system overall performance coefficient is higher than traditional online air conditioning systems.Through the analysis of the energy efficiency of buildings each equipment to load,analysis system for further energy saving potential.Annual operation cost and the return on investment research system economic benefits,at the beginning of the analysis compared with VRV air conditioning system,temperature and humidity independent control system is higher initial investment,lower running cost,considerable economic benefit in the design and operating life.Finally,according to the engineering application,the paper summarizes the problem of the dissemination of the temperature and humidity independent control system,and raises some suggestions on the promotion.