Operation Monitoring And Energy Saving Analysis Of Ground Source Heat Pump Project In Extreme Cold Area

With the rapid development of economy,the consumption of energy is more and more,if we do not take measures,it will lead to energy depletion,environmental degradation and other serious consequences.In the country's strong support,the heat pump technology have a rapid development.The ground source heat pump system with the earth as heat source and heat sink has been widely put into use,but its actual operating performance is often neglected.Therefore,it is necessary to monitor and evaluate the performance of the ground source heat pump system.First,of all,this paper put a soil source heat pump demonstration of cold region project as the research object,establish a set of ground source heat pump real-time monitoring system,the soil temperature field in the operation of the soil source heat pump system,indoor and outdoor temperature and humidity,air-conditioning side for the return water temperature and pressure and flow,ground source side for the return water temperature and pressure and flow,power system parameters such as effect of heat pump system energy efficiency ratio of factors of real-time monitoring and analysis,and also explore the soil temperature field change rule and the unit operation efficiency ratio.Secondly,through the monitoring of the soil source heat pump demonstration project,it is known that the soil temperature field changes periodically under the condition of the winter and the summer condition.However,due to the cold winter heating period up to 168 days,if not to take effective measures,it will lead to the problem of soil thermal imbalance because of the imbalance between the cold and hot load.In order to solve this problem,this paper puts forward the "area thermal compensation technology",which is to regulate the heating / cooling area in order to solve the problem of soil thermal imbalance.After nearly three years of monitoring and analysis,it is proved that the use of "area thermal compensation technology" can effectively solve the problem of soil thermal imbalance,by alternately running summer and winter conditions,soil temperature field can restore the original soil temperature.Although there are various factors due to the actual geological conditions that make the soil temperature of each layer have different degree of change,but the efficiency of the system is not affected.Finally,the suitability of the soil source heat pump system in severe cold region is analyzed from the aspects of technology,energy saving,environmental protection,economy and so on.The use of soil source heat pump technology can effectively reduce the burning of fossil fuels,improve the efficiency of energy use,and has good economic benefits.In terms of environmental protection,it has a significant effect on reducing emissions of greenhouse gases,harmful gases,dust and other pollutants,and it can also effectively reduce the degree of pollution of the atmosphere and prevent the occurrence of haze.To sum up,ground source heat pump system set energy-saving,efficient,environmental protection in one with more extensive application prospect of energy saving and environmental protection technology.At the same time,the "area of the thermal compensation technology" for the research and application of ground source heat pump in cold region provides an important reference.