Research On The Selection Of Ground-Source Heat Pump System For Chengdu Area Under Typical Sandy Gravel Geological Condition

In today's world, rapid economic development and the sharp improvement of people's living standards which trigger human depending on energy increasing,and in the other side,present main energy Tossil fuels being drained,the two opposite sites result in sharp contradiction.Building energy consumption accounts for a significant proportion in all energy consumption.Mainly due to the previous building energy-saving technologies are not taken seriously,China's building energy consumption is much higher than any other developed country,but in recent years,our country has gradually put emphasis on energy-saving technology development and applications.Ground-Source heat pump system is one of the key building energy-saving technology,by absorbing the energy from the earth, including soil, wells, lakes and other natural energy,and by using Ground-Source heat pump system units, Ground-Source heat pump heating (cooling) system supplies heating or cooling to buildings.This is a efficient energy-saving and pollution-free system which can supply heating and cooling through the using of renewable energy.Chengdu is a city which is hot in summer and cold in winter,so it is very suitable for the use of the underground soil heat storage.But using Ground-Source heat pump system should be based on the load of specific architectural characteristics and groundwater environment, the geological environment, ecological environment.And now research on macroscopic choose of chengdu Ground-Source heat pump system under the geology and hydrology is blank.Little basic materials,reference works can not be used to actual project,moreover,in different locations to take the selection of what kind of Ground-Source heat pump system,in no grasp the local geology hydrological conditions and design,rely on temporary geological rospecting and design, which will make the selection and design of Ground-Source heat pump system can not achieve the best effect of energy saving and even make choice of it is not reasonable.According to characteristics of Ground-Source heat pump system, in this paper,1 studies the geology hydrology condition in Chengdu,establish the geology and hydrology database and put focus on underground heat transfer situation under the geology and hydrology in Chengdu Area,moreover, in order to determine the selection of Ground-Source heat pump system,and give a technology reference to large-scale adoption of Ground-Source heat pump,I use ANSYS finite element method studying heat transfer simulation over experimental wells in 19 sections in Chengdu.