Dynamic Analysis Of The Technology And Economy On Ground-source Heat Pump Air-conditioning System

Nowadays,energy efficiency and environmental protection are drawing more and more attention;In addition,the sustainable development theory has been put forward in recent years.As a result,the ground-source heat pump air-conditioning system has become a hotspot in research on air-conditioning system.GSHP system has provided a new developing direction for energy efficiency and environmental protection technology with its advantages such as high efficiency,low environment pollution,stable running,etc.However,the GSHP system causes added expense of out-door earth exchanger,thus leads to relatively higher initial cost.Besides,the application research and analysis of GSHP system aren't perfect enough at present.Therefore,the development of the GSHP technology has been restricted heavily.In order to promote the generalization and application of the GSHP technology,this paper gives an overview of technological and economic analysis of GSHP system,and compares it with the air source heat pump system.In this article,the author analyzed the formation of the GSHP technology, illustrated its mechanism and classification,and analyzed the conditions of the application of China's ground source heat pump system to carry out.The basic theory of economy dynamic analysis is introduced.A formula for calculating the operation cost of ground-source heat pump is put forward.Using the present value and annual value method,the cost of ground-source heat pump system and the economy is calculated.Finally,the investment payback period of ground-source heat pump system' multi-investment is calculated by additional investment payback period of dynamic.This paper also describes the principles of risk analysis,the risk factors of ground-source heat pump system is identified. Comprehensive evaluation index system of risk of ground source heat pump system is put forward.The step of risk analysis of application to ground source heat pump system is given by Fuzzy Analytic Hierarchy Process.This paper analyzed the air-conditioning system of one specific office building in Wuhan,calculating the present value,annual value and additional investment payback period of dynamic of adopting GSHP system and air source heat pump system separately.And the risk of ground-source heat pump system is evaluated. The example show that the operation cost of ground-source heat pump system is lower than that of traditional air-source system,and ground-source heat pump system has obvious effectiveness of energy saving and environmental protection, and it has lower risk than air source heat pump system in this paper.