| Energy consumption in buildings account for a large proportion of total energyconsumption, while HVAC energy is the biggest factor of consumption building, With theproblem of scarcity of resources and increasing environmental pollution, Shallowgeothermal energy has been paid more attention by architectural designers andresearchers. ground source heat pump is a New and efficient air conditioning systemwhich is using shallow geothermal energy. It can be both heating and cooling, It hassignificantly development in recent years with the rapid growth in domestic and overseasair conditioning market.We take the main district of Xi’an and the surrounding area as the research area, selectthe representative points of thermal response tests and Combined with the geological,hydrogeological conditions survey data to analyze the influence of Groundwater depthand geotechnical thermophysical characteristics on ground heat exchanger performanceand ground source heat pump system construction. From the perspective of economic andenvironmental benefits, to make the analysis of ground source heat pump applicationsuitability. For shallow soil thermal parameters in Xi’an By comparison with theconventional air conditioning systems analysis,Through experiments and analysis come the following conclusions: Dive-bit range andsurrounding the main city of Xi’an is360m to550m, along the southeast to the northwestlevel decrease. Basic vadose zone thickness in3-30meters, loess plateau and other localtopography reach60meters.The thermal conductivity of soil is shallow range1.551W/(m K) to2.0W/(m K), the volume heat capacity range is2.225×106J/(m3℃) to2.709×106J/(m3℃), within120meters of geotechnical average temperature rangeis16℃to18℃.By comparison of annual energy consumption value and economic comparison, we getthe conclusion that energy saving effect of ground source heat pump system is obviousbetter than conventional air conditioning system,and it has significant economic benefits.we analyze the suitability of ground source heat pump system and make the sortof ground source heat pump system suitability according to geomorphic units in studyarea by considering social and economic benefits of the projectCome to the main city of Xi’an and the surrounding topography of each unit, groundsource heat pump system energy savings than conventional air conditioning system heatsource is obvious, significant economic benefits. Comprehensive social and economicbenefits of the project, the study of regional ground source heat pump air conditioningsystem application suitability for analysis, according to the study area geomorphic unitsof ground source heat pump system suitability to make the sort.This paper aims to evaluate energy consumption value the suitability of development ofthe use of ground heat pump system and provides assistance to the healthy developmentof surrounding ground source heat pump in the main district of Xi’an and the surroundingareas. |
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