Research On The Coupling System Research With The Comprehensive Utilization Of Natural Gas And Ground Source Heat Pump

This paper proposes a distributed energy coupling system with natural gas as the main energy and geothermal sources as auxiliary energy, which comprehensively utilize of natural gas and geothermal sources, provide support for the energy supply system and complementary, and maximize resource utilization. Coupling distributed energy system with heat pump system maximum uses of potential energy and clean energy environment, improves the comprehensive utilization of the energy, reduces environmental emissions. Therefore, the effective technology development of energy coupling system coupled the distributed energy system with heat pump distributed has important practical significance.This paper mainly divided into three parts:First, the coupled energy efficiency of each subsystem coupled with ground source heat pump. Second, a distributed energy coupled with renewable energy figures out the conversion of qualitative (quantity) the amount of conventional energy saving and emission pollution index. Third, through specific project examples, it is given to illustrate the feasibility of distributed coupling energy. Topics include the following:(1) User heat load calculation and analysisUsers thermal loads mainly include heating, domestic hot water and medical steam, etc. There is a flow chart can be drawn by the heat load can be obtained in three ways, one is heat pump and water-water heat exchanger via; one is geothermal source-lithium bromide absorption heat pump way; one is high-temperature gas-HRSG way. All of three ways provide total system heat load, each way due to the coupling of the geothermal source changes the working curve equipment, etc. finally, achieve the purpose of energy saving.(2) User cooling load calculation and analysisThe cooling load can be obtained in two ways, one is driven by high-temperature flue gas of lithium bromide absorption chiller; one is ground source heat pump system into the groundwater.(3) Users electrical load analysisHospital uses power grid, don’t surf the Internet, the part of power system of internal combustion unit provides the part of power consumption and all of electrical equipment and system equipment, external power grid make up the electricity part which the distributed energy system is insufficient to provide. Electric load rate of distributed energy output coupling system has a certain impact on system efficiency and equipment performance.(4) Energy saving contrastThis paper is mainly to compared the primary energy consumption and the energy consumption rate with three kind of systems that are the distributed energy coupling system,conventional distributed energy system and regular supply system, based on generate the equal electricity, heat and cold, calculate each rate of primary energy consumption and energy consumption of disposable, then analysis and comparison.(5) The amount of pollutant emissionsConventional energy combustion will produce carbon dioxide, sulphur dioxide, nitrogen oxides, dust and other contaminants. In this paper, the distributed energy coupling systems integrates nature gas with renewable energy coupled comprehensive utilization. Natural gas and renewable energy is clean energy that have environmental protection. By calculating system of cold, heat, electricity load and the system energy consumption, reducing the energy consumption of conventional in this paper, we can finally calculate the emissions of pollutants,.