Underground Heat Exchange System Hydraulic Conditions And Economic Analysis

The technology of ground source heat pump respond to the energy-saving low carbon,is widely used in China and other parts of the world.This paper mainly relying on actual project,summed up the current practical engineering severalcommon outdoor horizontal pipe connection ways,In the local well group basis,design calculation and analyze the water resources distribution, and further to analyze their respective advantages and disadvantages.Describes underground (underground construction) horizontal pipe connections, analyze the influence of different velocity,vertical buried pipe depth,loop length and other aspects on the local system unbalance rate.Combining different horizontal pipe connection way of initial investment and their basic characteristics,select a more reasonable design,allowing the system to meet the design requirements, while reducing operating costs and maintenance costs, have certain reference value for practical engineering applications.First of all, the paper describes the development and application of groundheat exchanger system.And then points out the problems of the practical engineering, the heat pump system in the design and construction stage in varying degrees,on this basis, the hydraulic condition and the importance of initial investment of ground-source heat pump system are analyzed.Secondly, the hydraulic conditions of underground heat system is analyzed in the paper,respectively from the hydraulic imbalance, the hydraulic stability andhydraulic balance three aspects, analysis of their impact on hydraulic conditions.Then from the pipe diameter, buried depth and so on several aspects to analyze its influence on the hydraulic distribution.Summary of several common in actual engineering pipe connection,base on feixiang actual cases to calculate the hydraulic analysis of their distribution.Then,the design and construction phases points of underground heat exchange system are described.This paper outlines the basic components of the groundheat exchanger system,then introduce the mode of connection of pipe system for well group arrangement and buried.Through the reasonable arrangement of system,, can make the system holistic and local water distribution uniformity, enha nce system stability.Every link of the construction stage are the key,the safe andreliable system can be able to make the system run on rational design of hydraulic conditions.Finally, the economic of underground heat exchange system is analyzed.Onthe whole, local initial investment analysis,compare the characteristics of severalcommon horizontal pipe connection,to provide a theoretical support for differentcircumstances reasonable selection of construction scheme design.On this basis,this paper analyzes the system operation cost and energy saving heat recovery.