地埋管地源热泵浅层土壤分层热物性测试实验及计算研究-供热、供燃气、通风及空调工程专业论文.docxVIP

内蒙 内蒙古科技大学硕士学位论文 PAGE PAGE III Abstract Shallow Ground Source Heat Pump (GSHP) system is mainly use of the thermal energy through shallow subsurface soils, and has attracted much attention because it does not pollute the natural environment and applicable to any area in theory. Currently, the system is mainly used to provide heat and provide cooling for the building in summer and winter. The different soil thermophysical properties in different regions and the diverse underground soil structure in the same area have both important influence to run complex soil shallow ground source heat pump system regulation.It makes the heat transfer performance is decided by groundwater seepage location, HYPERLINK /link?url=Kbr__9PDovVaef8R8wpni3H-kkuTeHX9wYUHBphh6YXHr4sLcVonVEH22Ia6V1J1sSq5GqEAR9UmG1SgJUhU1t6w-AL29Bt8TmB6N_hBfma flowability, flow rate and etc. The diversity of soil structure and the complexity of the heat transfer make the calculations not accurate, which leaded that the heat pipe can not be determined and the natural temperature changes in the environment also have an effect on surface temperature. How to accurate design of shallow ground heat exchanger pipe by determining shallow subsurface soil thermophysical properties becomes a difficult problem to limit GSHP development. Firstly, the paper introduce the development of shallow GSHP system and analyze the advantages and characteristics of shallow GSPH technology, noting it has broad prospects for development. Introduce GSHP technology for underground soil survey methods and points out deficiencies. Propose soil thermal properties test, the underground soil is divided into several layers, design and build the soil thermal properties of thermal testing experimental platform and detailed description the test platform, and conventional soil thermal testing and sub-experiment station layer of soil thermal properties test. Finally, the numerical simulation model for the layered soil thermal physical properties