| In today’s society,energy is a top priority problem,it is an important cornerstone of economic development and social progress.Energy plays a vital role in human development.President Xi Jinping pointed out that the development of clean energy is an important task to improve energy structure,ensure energy security and promote the construction of ecological civilization.The shallow geothermal energy is a clean and environmentally friendly energy,which has been clearly listed in the 《Renewable Energy Law》 for the development of new energy.The ground source heat pump system is one of the forms of shallow geothermal utilization.Nowadays,all walks of life are advocating energy saving and emission reduction.Ground source heat pump,as a clean energy,is developing rapidly.So we have to go through careful plan design,plan analysis and plan comparison before each project starts,making full use of the advantages of ground source heat pump so as not to waste energy and capital.Firstly,through the various reports and experimental data provided by the cooperative units,this paper carries out a detailed preliminary investigation and detailed analysis,so as to determine the design principles.Based on the shallow geothermal resource conditions presented in the geological prospecting report and the local soil heat transfer experiments,the conditions of soil thermal energy and shallow groundwater resources were compared and analyzed,and the utilization mode of shallow geothermal resources was determined as ground source heat pump.According to the local climatic conditions and relevant specifications,the actual indoor and outdoor parameters of the plot are determined.The cooling and heating loads and the cooling and heating loads of the typical buildings are simulated and calculated by the HVAC load calculation software.The two important data,the load index and the simultaneous use coefficient,are used to estimate the typical buildings.The cold and heat load of the building and the total cold and heat load of the whole block.By calculating the heat load of the most disadvantageous room under radiator heating and floor radiant heating in winter,the temperature of water supply and return in winter is determined,and the temperature of water supply and return in summer is determined according to the practical engineering experience value,thus the operating temperature parameters of ground source heat pump units are determined.According to the building area of different functional buildings in the block,the cold and heat load values of the block are calculated.It is concluded that the central cold source in the energy station is provided by the ground source heat pump,and the concentrated heat source is provided by the ground source heat pump + urban thermal system.In order to promote energy conservation,improve energy utilization efficiency,optimize energy structure,construct a sustainable energy supply system to make it safe and efficient for human use,analyze the demand of the automatic control system for the section,requirements of monitoring system are put forward to make it energy-saving,safe and efficient for human use.Finally,through the comparison of the economic indicators of the regional energy system and the conventional energy system,it is concluded that the ground source heat pump has good economic benefits. |
PDF Full Text Request