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geothermal energy     
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  地热能
     Development Strategy of China's Geothermal Energy in 21st Century
     21世纪中国地热能发展战略
短句来源
     Biomass,wind and geothermal energy are commercially competitive with conventional energy.
     与传统能源相比,生物质能、风能和地热能等资源更具备商业竞争力。
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     Study on the methods and avenues of applying geothermal energy in mines
     地热能在矿山的应用途径和方法
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     Development Trend of Geothermal Energy Resource in China
     中国地热能发展趋势
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     Study on the Gradient Utilization of Low Temperature Geothermal Energy for Space Heating System
     低温地热能梯级利用供暖系统研究
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  地热
     THERMODYNAMIC ANALYSIS OF R_(115) GRAVITY-HEAD GEOTHERMAL ENERGY CONVERSION SYSTEM
     R_(115)重力升压地热发电系统的热力学分析
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     Geothermal Energy for Heating Control System Based on LonWorks Technology
     基于LonWorks技术的地热供暖控制系统
短句来源
     (2) in the hot dry rock geothermal energy extraction system , the temperature of wall rock mainly trend to descend , the temperature vary on the logarithm rule (y=-29. 559Ln(x)+385. 13) nearby the production well, but on the linearity rule (y = -20.339x+573. 13) nearby the injection well.
     (2)在地热开采过程中,温度整体呈下降趋势,在生产井附近区域,温度早对数规律变化,y=-29.559Ln(x)+385.13,而在注水井附近太原理工人学硕士研究生毕业论文I三域,呈线性规律变化,y=一20.339x+573.13。
短句来源
     Geothermal energy will be one of the main energy resources in the 21st century.
     地热资源将成为21世纪的主要能源之一。
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     THE UTILIZATION AND DEVELOPMENT PROSPECT OF GEOTHERMAL ENERGY RESOURCE
     地热能源利用现状及发展前景
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  地热资源
     Geothermal energy will be one of the main energy resources in the 21st century.
     地热资源将成为21世纪的主要能源之一。
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     The Study on the Exploitation of Geothermal Energy Resouces of Anyang City
     安阳市地热资源开发利用研究
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     Low in the cost of exploration and high in industrial reward, geothermal energy can be widely used in such fields as electricity generation, heating and medical treatment.
     地热资源开采成本低 ,工业回报率高 ,在发电、采暖、医疗等领域具有广泛的用途。
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     This article introduces the current state, corresponding problems and prospect of exploration and development of geothermal energy in Daqing area, and points out that effective development and exploitation of geothermal energy resource will definitely further sustainabledevelopment of Daqing area.
     本文介绍了大庆地区地热资源勘探开发现状、存在的问题及发展前景 ,指出大庆作为以油气资源生产为主的城市 ,随着丰富地热资源的有效开发和利用 ,必将进一步推动大庆地区的可持续发展
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     A Discussion on Exploration and Development of Geothermal Energy Resource in Daqing Area
     大庆地区地热资源勘探与开发利用的探讨
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  地热能源
     THE UTILIZATION AND DEVELOPMENT PROSPECT OF GEOTHERMAL ENERGY RESOURCE
     地热能源利用现状及发展前景
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     The method of electric sounding was employed in the prospecting of geothermal energy So that the relationship was uncorvered beteen the regional anomalies of vertical electrical sounding and the geological structure of the geothermal field in the northeast part of North China Plain.
     作者将电测深法用于地热能源普查勘探中,揭示了华北平原东北部垂向电测深区域异常与该区域地热田所赋存的地质构造之间的相关性.
短句来源
     Mathematical model for the above three fields, a non-linear one, can not only used for reservoir numerical simulation, but also for the development of geothermal energy and underground engineering in deep zone.
     流体渗流场、地应力场和地温场相互耦合的数学模型为非线性动力学模型。 该模型除可用于油藏数值模拟外 ,还可用于深部地下工程和地热能源的开发。
短句来源
     Geothermal Source Heat Pump(GSHP)is developing fastest in current world to exploit geothermal energy. It is also one of the most hopeful fields in our country to directly exploit geothermal sources.
     地源热泵(GeothermalSourceHeatPump—GSHP)在当今世界地热能源开发利用方面发展得最为迅速,也是我国直接利用地热资源最有前景的一个领域。
短句来源
     Furthermore,with respecting to the cost of explorations and exploitation,geothermal energy has more future development potential.
     从其开发利用成本来看,地热能源相对于其他可再生能源更有发展潜力。
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  geothermal energy
The modelled body may be the source for the inferred geothermal energy of the region.
      
Low enthalpy geothermal energy resources in Denmark
      
Preliminary investigations of the geothermal energy potential in Sweden are being carried out in crystalline rocks of Precambrian age, as well as in the Triassic Buntsandstone.
      
Conversion of this geothermal energy into electrical energy is also unlikely to be economical.
      
The Parana Basin is found to offer at present the best site for extraction of geothermal energy in Brazil.
      
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The Xizang Plateau is the most intense area for geothermal aetivi tyes in our country the crustal structure is very complex and earthqueke activities are extremely frequent.Based on geothermal data and various features of geophysical fields in the region research and analyses has been made in this paper. A unified interpretion of the nature in the deep part of the crust is gi ven. It in dicates that the cause of geothermal distribution and its activity in Xizang Plateau is due to the high temperature in the...

The Xizang Plateau is the most intense area for geothermal aetivi tyes in our country the crustal structure is very complex and earthqueke activities are extremely frequent.Based on geothermal data and various features of geophysical fields in the region research and analyses has been made in this paper. A unified interpretion of the nature in the deep part of the crust is gi ven. It in dicates that the cause of geothermal distribution and its activity in Xizang Plateau is due to the high temperature in the crustal medium and the existence of melting or partial melting matter in the crust. The geothermal display is affected by the deep crustal structure and material migration and the geothermal energy is provided by the quantity of heat produced by the collision process of the Indian plate against the Eurasian plate and the magmatic intrusion.

本文根据西藏高原地热活动与温泉分布和各种地球物理场的特征,进行了综合分析与研究,给出了地壳深部要素的统一解释。说明了西藏高原水热分布及其活动原因是由于地壳介质中温度很高,地壳中存在着物质的熔融或部分熔融所致。水热显示是受深部地壳构造与物质运移所制约,其热能是由印度板块与欧亚板块碰撞过程中所产生的热量和岩浆上涌所提供的。

The paper analyzes the requirements, problems and the difficulties of heat power cycles and installations in application of single heat source (SHS) power stations using low-moderate temperature heat sources, and then sugqests the theory to combined utilize several heat sources to install a power plant by means of multi-heat sources (MHS) thermodynamic cycle and discusses its advantages as well as requirements. The paper also projects some combined installations utilizing the solar energy, fuel burning energy...

The paper analyzes the requirements, problems and the difficulties of heat power cycles and installations in application of single heat source (SHS) power stations using low-moderate temperature heat sources, and then sugqests the theory to combined utilize several heat sources to install a power plant by means of multi-heat sources (MHS) thermodynamic cycle and discusses its advantages as well as requirements. The paper also projects some combined installations utilizing the solar energy, fuel burning energy and geothermal energy or the ocean thermal energy, and compares the calculated results of both SHS and MSH cycles by using lists to prove that MHS power plant has its great significance in both technology and economy.

本文分析了单热源动力装置中利用中、低温热源的热力循环,及其装置的要求和存在的问题后,提出:用多热源热力循环联合利用几种不同热源发电的理论和装置。作为例示,拟出太阳热,火力与地热或深水温差热相联合的热力循环和装置,并对它们和单热源的热力循环进行热力计算,将结果列表示知,以判断多热源发电厂在技术经济上的优越性。

An attempt has been made to study the mechanism of utilizing geothermal energy to preheat the air flow in shallow drift and its practical applications. Hence a new calculating method based on definite difference theory with the aid of computer is developed.Summary. Mathematical models involving the radial distribution of rock temperature) the axial distribution of air flow temperature and the relevant preheating parameters in the heat-exchange process between country rock surrounding a drift and air flow...

An attempt has been made to study the mechanism of utilizing geothermal energy to preheat the air flow in shallow drift and its practical applications. Hence a new calculating method based on definite difference theory with the aid of computer is developed.Summary. Mathematical models involving the radial distribution of rock temperature) the axial distribution of air flow temperature and the relevant preheating parameters in the heat-exchange process between country rock surrounding a drift and air flow in drift are set up and shown by a flow chart (cf. Fig.10). Some new viewpoints are put forward to describe the air-geothermal preheating mechanism and its application as follows.1. The periodic variation of superficial atmospheric temperature leads the distribution of rock temperature surrounding drift to fluctuate periodically. As a result, the country rock surrounding a shallow drift serves a function as heat reservoir to regulate intake air temperature under heat-exchange. The heat resource which is used to preheat intake air in winter derives itself mainly from the heat absorbed and stored by country rock from warm air flow in summer.2. In summer, the renewal of heat retained in rock with fan-ventilation is much better than that without fan-vetilation. To ensure the preheating effect in winter from heat loss, the drift zone to be preheated should be fan-ventilated at the time when the superficial atmospheric temperature raises to an annual peak and then closed thereon. In winter, the starting time to preheat drift zones should be retarded as far as possible so as to provide the heat requirement for severe winter.3. A thermal hysteresis phenomenon occurs in the interval from the time of hardest preheating to the time when intake air having lowest temperature.In conclusion, preheating technique utilizing geothermal energy in waste drift or in goaf (sometimes, if necessary, a few of exclusive drifts are excavated) is superior to that by other ways in both cost and technology.The method presented in this paper can be used to solve the problem of air-cooling in deep mines as well. Fig.1 Allocation of radial difference rings in country rock surroundingdriftFig.2 Axial variation of air flow along a drift Fig.3 Dimensionless radial temperature distribution in country rock,solution by the present model is compared with that by R. Nottrot. Fig.4 Dimensionless axial distribution of air flow temperature along drift,solution by the present model is compared with that by C. VanHeerden.Fig.5 Axial distribution of air flow temperature along drift, solution by the present model is compared with measuring values in Chaihe Mine Ⅰ, Ⅱ,Ⅲ,Ⅳ-solved by the present modeh○, △, ●, ×--measured values corresponding to the time asabove, respectively. Fig.6 Axial time-dependent distribution of air flow temperature, solution by the present model is compared with measuring values in Chaihc MineⅠ-temp. of intake air;Ⅱ-temp, of pt. at a dist. 134m;Ⅲ-temp, of pt. at a dist. 216m;Ⅳ- temp, of pt. at a dist. 302m; FO-Fourier No., symbolized as the dimensionless time.Fig.7 Some radial distributions of rock temperature at different importantmoments Fig.8 comparison of radial distributions of rock temperature with andwithout fan-ventilation Fig.9 Dependence of air flow temperature on dimensionless time FO atdifferent positions in drift Appendix Flow chart

本文对浅部水平巷道地温预热的机理和技术作了系统的研究。根据差分原理结合电算给出了非稳态巷道围岩与空气热交换过程中的岩温径向分布和风温轴向分布及有关的预热参数。对预热机理提出了新的观点,并对合理利用地温及充分发挥预热效果的技术途径提出建议。

 
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