Performance Test And Energy Saving Of Underground Water Source Heat Pump System In Cold Area

Since the 21 st century,the problems of energy shortage and environmental pollution have become more and more serious,which have exerted a huge impact on the healthy and orderly development of human society.At the same time,the rapid growth of building energy consumption also aggravates the contradiction between energy reserve and energy demand,so taking the road of sustainable development has become a must for all countries in the world.In this context,the GWHP system,characterized by high efficiency,energy saving and environmental protection,came into being.This technology takes the underground water body as a cold and heat source and is a renewable energy utilization technology.Due to the high operating efficiency of the GWHP system,it has been widely promoted and applied in the world.However,it also causes some problems in practical engineering applications.For example,without an in-depth understanding of the hydrogeological conditions of the project location,the blind application of GWHP system cannot achieve the expected effect of energy saving and emission reduction.In the actual operation process,there are a series of problems such as too large equipment selection and improper operation management.Therefore the paper takes the underground water source heat pump heating system of a residential area in Zunhua city as the research object,and analyzes and studies the operation status,energy consumption and technical economy of the GWHP system from several aspects through the actual test data,so as to promote the popularization and application of the GWHP technology in cold areas.Firstly,the paper reviews the development,application and research status of GWHP system at home and abroad,discusses the working principle and characteristics of GWHP system,and summarizes the application conditions,existing problems and evaluation methods of GWHP system.Secondly,the paper tests the GWHP heating system of No.3 machine room in a residential area in Zunhua city.Through the test data,the heating effect,running condition,energy consumption and energy efficiency ratio of the GWHP unit and the system are analyzed and studied,and the problems existing in the actual operation of the system are pointed out.Thirdly,the paper uses DeST simulation software to simulate and analyze the heating load of No.3 machine room corresponding to the residential building.Based on the simulation results and the measured data,a comparative analysis is made between the GWHP heating system and the conventional heating system,so as to verify the energy-saving performance of the GWHP system.At last,through theoretical analysis and calculation,the paper puts forward the corresponding energy-saving reconstruction scheme for the problems existing in the actual operation of the GWHP heating system in the No.3 machine room.The energy saving transformation scheme and the conclusions obtained in this paper provide a reference for the design,performance improvement and system optimization of theGWHP project,and also provide a reference for the popularization and application of GWHP technology in cold areas.