The Analysis Of The Ground Source Heat Pump System Based On The Thermo-economic

Ground source heat pump is a more and more attention-getting technique based on the world-wide energy saving and environment protection. GCHP system has provided a new developing direction for energy efficiency and environmental protection technology with it's advantages such as high efficiency,low environment pollution,stable running,etc.Usually,we regard GCHP as an energy saving technique,do it save the money?It's first cost,running cost will influence the consumer's decision. There are a lot of factors influencing the GCHP's economical efficiency,not only the thermodynamics,but also the cost,the price of fuel and electricity.However,it hasn't a long time since the first GCHP used in China,it is necessary to study the GCHP with the thermo-economic method to analyze it's application,cost,running and so on . In order to promote the generalization and application of the GCHP technology,this paper gives an overview of thermo-economic analysis of GCHP system.In the article,the author introduces the formation of the GCHP,explains it's system composition and principle for the energy saving . The author argues that the thermo-economic analyzing method is a satisfying approach to achieve energy and low expense after introducing it's two theoretic foundation:the thermodynamics foundation and the economics foundation,then put forward that the thermo-economic analyzing method is a good route to solve the energy and economy problem. This paper analyzed the GCHP system of one villa building in Binzhou,Shandong province,establishs the thermo-economics analyzing model of GCHP, the heat economics balance formula and the price model of the products' exergy cost ,drawing the conclusion that the exergy cost of different parts of the system varies and shows an increasing trend. After analyzing the system roundly,the author establishs the model of exergy analysis which is used to analyze the exergy lose of underground tubes,evaporator,condenser,throttling gear,compressor and fan coil ,then establishs the exergy lose formula.This paper establishe the thermo-economics analyzing model of GCHP in summer and winter mode by the algebraic methods and the exergy flow . And analyzs exergy efficiency,costs of unit cold and heat exergy and the unit cold and heat capacity of GCHP using the principle of black box .the author calculate the data above by the project example which can be used as standards for evaluation and comparison,it supports the conclusion that GCHP system is better than air source heat pump system and the thermo-economic analyzing method is more accurate than that based on energy.Moreover, this paper establishs the object function to optimize the GCHP system, with which we can find the road to let the system more energy-saving.And establishs scientific evaluating architecture.