Because of the importance of measurement of ground thermal conductivity for the design of ground-coupled heat pump system,ground thermal conductivity test system is developed using electric-heater method.
土壤导热系数是土壤源热泵中地下埋管换热器设计的重要参数,其大小对钻孔深度与个数有显著影响;针对土壤导热系数的测定对土壤源热泵系统设计的重要性,利用电加热法研制了土壤导热系数测定系统;系统的控制部分基于先进的LonWorks现场总线技术,并结合DDE标准与Visual Basic数据库开发技术构建;整个系统包括控制器的软硬件设计以及上位机监控软件设计;系统根据实验条件对输入功率进行了精确地控制,实验获得的数据满足进行土壤导热系数计算的需要。
The ground heat exchanger size and cost are highly dependent on the ground thermal conductivity.
根据传热学理论,利用土壤热响应的原理,建立了一套可用于现场测量土壤导热系数的方法,测试方法方便快捷,计算方法简单,实测结果与传统的查手册结果比较,更准确可靠,能确保地源热泵系统设计的可靠性。
A study on the correlative influence of wax thickness and overall heat transfer coefficient of soil is carried out in the light of low throughput operation of TieDa Oil Pipeline.
针对铁大线低输量运行开展了管道结蜡的预测及与土壤总传热系数相关性影响研究,给出了铁大线低输量运行条件下的经济结蜡厚度以及结蜡厚度与土壤总传热系数的相关式,确定了各站间的总传热系数和管道的安全最低输量,提高了管道在综合处理工艺条件下的热力校核的准确性,为铁大线低输量运行热力系统改造节约了费用。
The testing method of soil thermal conductivity is introduced.
介绍了土壤热导率的测试方法,根据传热模型反解法设计了土壤热导率测试系统。
Taking directly buried steam pipeline using centrifugal glass wool as inside insulating material and polyurethane as outside insulating material for example,the thicknesses of inside and outside insulating layers at different soil thermal conductivities are calculated,and the influence of soil thermal conductivity on the insulating layer thickness is analyzed.
以内层保温材料为离心玻璃棉,外层保温材料为聚氨酯的直埋蒸汽管道为例,计算了不同土壤热导率时内、外保温层的厚度,分析了土壤热导率对保温层厚度的影响。
Methods for Determining the Thermal Conductivity of Underground Soil and Results Analysis;
地下土壤导热系数计算方法及结果分析
Influence Factors Analysis on In situ Test of Ground Thermal Conductivity
现场测定土壤导热系数的影响因素分析
Fractal model for efficient thermal conductivity of soil sample
土壤样品有效导热系数的分形计算模型
The warm oil will produce thawing of ice rich soil adjacent to the pipeline when it crosses through permafrost zone, resulting in thaw settlement of the pipeline and variation of soil properties.
埋地热油管道通过永冻地带时，会导致土壤解冻，进而导致管道沉陷和土壤物性参数变化。
Experimental study on thermal conductivity of the surface layer concretes
表层混凝土导热系数规律的试验研究
The prediction models of thermal conductivity of concrete and their application
混凝土导热系数的理论模型及其应用
Numerical Simulation and Heat Conductivity Identification of Deep Earth Freezing Temperature Field;
深土冻结温度场数值模拟及其导热系数识别
Mensuration of Thermal Conductivity Coefficient and Linear Thermal Expansion Coefficient of Shale CeramicsGrain Concrete Products;
页岩陶粒混凝土制品导热系数及线性热膨胀系数测定
Application of Pedo-transfer Functions in Calculating Saturated Soil Hydraulic Conductivity of Fengqiu County
土壤传递函数在计算土壤饱和导水率中的应用
ANALYSIS ON THE GROUND HEAT BALANCE OF GROUND COUPLED HEAT PUMP SYSTEM
土壤源热泵系统地下热平衡问题分析
Study on Effects of Interaction and Model and Character Coefficients of Water and Temperature in Soil-Crop Systems;
土壤——作物体系中的水热耦合效应及模型与特征参数研究
Most of these areas are occupied by acid tropical upland soils.
这些地区大多数为酸性热带旱地土壤。
Numerical Simulation on Soil Temperature Field and Heat Drop in Hot Crude Pipeline
热油管道温降及土壤温度场数值模拟
Influence of latent heat energy storage on performance of solar-assisted ground source heat pump heating system
潜热蓄热对太阳能-土壤源热泵系统影响
Study for Thermal Conductivity Measure of Geotechnical Materials and Simulation and Experiment of Water Source Heat Pump in the Lab
岩土材料导热系数及水源热泵室内模拟试验研究
Study of Geothermal Heat Exchanger for Integrated System Soil Thermal Storage and Ground-source Heat Pump;
土壤蓄能与土壤源热泵集成系统地埋管换热特性研究
Simulation of Borehole Heat Exchanger for a Ground-coupled Heat Pump;
土壤耦合热泵U型埋管换热器数值模拟
Numerical Simulation of Vertical U-tube Underground Heat Exchanger for GSHP
土壤源热泵垂直U型地埋管换热的数值模拟
