基于Monte-Carlo参数模拟的体积法评价浅层地温能资源

为了准确评价浅层地温能资源以便科学合理的对其进行开发利用,在对已有的评价方法进行分析研究中,发现体积法在资源评价中存在参数赋值不确定的问题,而获取准确的计算参数对准确的评价地温能资源十分重要。采用蒙特卡罗法,通过计算样本的频率可以较好地评价和描述计算结果的可信度,弥补体积法的不足。该文以丹阳市滨江新城为例,基于现场热响应实验和开发利用适宜性分区成果,对研究区每个钻孔中的样品利用蒙特卡罗法模拟体积法计算不确定性参数,从而分区计算丹阳市滨江新城浅层地温能热容量、地下水地源热泵系统换热功率和地埋管地源热泵系统换热功率。结果表明,丹阳市滨江新城在200m深度范围内浅层地温能热容量为5.14×10~(13)k J/℃,在100m深度范围内浅层地温能热容量为2.81×10~(13)k J/℃。地埋管地源热泵系统的换热功率明显大于地下水地源热泵系统的换热功率,具有更广阔的开发前景。     

河北省浅层地热能资源潜力评价

浅层地热能是一种清洁的能源,分布广储量大,在供暖制冷等行业有着广泛的利用前景,其合理的开发利用需以资源量的合理评价为基础。通过层次分析法对河北省地下水源热泵系统和地埋管热泵系统进行适宜性分区,在分区基础上对适宜区和基本适宜区进行资源量评价,应用热储法计算河北省地源热泵系统热容量为505.1×10¹⁴ kJ,折合标准煤166 432.259×10⁴ t;利用地下水量折算法得出地下水源换热功率为地下水源热泵系统换热功率21.16×10⁷ kW,单位换热量法计算的地埋管热泵系统换热功率为51.27×10⁷ kW;开发利用潜力地下水热泵系统冬季可供暖面积47.02×10⁸ m²;地埋管热泵系统冬季可供暖面积113.93×10⁸ m²。可见河北省浅层地热能资源量丰富,开发潜力巨大。     

黄石城市规划区浅层地温能赋存条件及开发利用潜力评价研究

对黄石地区浅层地温能赋存条件及开发利用潜力的系统研究尚属空白.在系统分析黄石城市规划区浅层地温能赋存条件及相关热物性参数的基础上,开展浅层地温能开发利用适宜性分区及开发利用潜力评价.结果表明,研究区浅层岩土体地温为18～22℃,可开发利用条件较好;研究区地下水地源热泵建设较适宜区面积为6.94 km2,无适宜区;地埋管...     

商丘市城区地源热泵适宜区浅层地热能可利用量评价

采用热储法和单孔换热功率法对商丘市城区浅层地热能储存资源量及地源热泵适宜区浅层地热能可利用量进行估算和评价,得出商丘市浅层地热能资源总储量为992.96×10~(12)k J,在地源热泵适宜区150m以浅的范围内,可利用的浅层地热能资源量为198.50×10~(12)k J/a,折合标准煤为677.29×10~4t/a,实际应用后可以实现减排二氧化碳量1664.10×10~4t/a。     

贵阳市中心城区浅层地温能潜力评价及环境效益分析

对贵阳市中心城区的浅层地温能潜力和环境效益进行了评价、分析,其总能量为10.76×107GJ,可装备空调面积约16.53亿m2。浅层地温能如能充分地开发利用,则每年可节约标准煤214.45万t,减少511.68万t二氧化碳、3.65万t二氧化硫、1.29万t氮氧化物、1.72万t悬浮物粉尘以及21.45万t灰渣的排放,对贵阳市的节能减排具有重要意义。     

宁夏纺织园研发楼地埋管施工方法

结合项目区浅层地温能勘测与评估,主要从钻井工艺、成井、地埋管安等方面探索浅层地温能在该区域的适用性和可推广性,总结优化该区域浅层地温能开发与利用经验,制定合理可靠的施工方法。     

井陉县奥陶系灰岩浅层地温能开发利用潜力研究

为研究井陉县奥陶系灰岩所蕴藏的浅层地温能,在井陉县的河谷内实施热响应试验钻孔一眼,测试了其岩土体物理力学、热物性参数及地温场特征,发现该地区10 m以深平均地温达到了16.77 ℃,夏、冬季工况测试条件下单位延米换热量分别为68.38、65.78 W/m。通过选取地下水位埋深、地下水流速等8项指标对井陉县进行了地埋管地源热泵适宜性评价,将评价区划分为较适宜区、适宜区和不适宜区,其中较适宜区面积为244.12 km²,占总面积的16.82%。在此基础上对较适宜区进行了资源潜力评价,计算了其资源潜力及节能减排能力。为了更好的验证井陉县奥陶系灰岩所蕴藏的浅层地温能具有开发利用价值,安装了相关配套应用工程及监测设备,监测了在不同工况测试条件下的耗能量,通过与普通家用空调耗能量进行对比分析,使用地埋管地源热泵年运行成本约为使用空调成本的55%,具备开发利用价值。     

全国煤层气资源动态评价与可利用性分析

按照统一的全国油气资源评价方法体系框架,运用体积法,对陆上41个主要含煤盆地(群)煤层气资源的品质、分布状况以及可利用性进行了分析评价。结果表明:全国埋深2 000 m以浅的煤层气地质资源量为30.05×10~(12)m~3,可采资源量为12.50×10~(12)m~3。煤层气资源区域分布较为集中,鄂尔多斯、沁水等10个大型含气盆地煤层气资源占全国总量的85%以上,层系上主要分布在上古生界和中生界。煤层气整体品质一般,类型以II类为主,其次为Ⅰ类,可采性差异大,可采性较好的地区有限。与新一轮全国煤层气资源评价相比,本次动态评价地质资源量减少了6.76×10~(12)m~3,可采资源量增加了1.63×10~(12)m~3,主要由于含气量数据可靠程度增加和对埋深认识的变化。我国煤层气具有地面规模开发条件的可采资源量在4×10~(12)m~3左右。沁水、鄂尔多斯、滇东黔西、准噶尔等几个大型盆地具有优先开发的地质条件。     

国内首台车载浅层地温能响应试验台交付使用

不久前,由北京市地质勘察技术院华清荣吴公司自主研制的国内首台对外销售的大型车载浅层地温能冷热响应试验台通过验收并交付安徽省地质环境监测总站使用,标志着国内用于地埋管地源热泵系统前期岩土热物性及地埋管换热器换热能力实验设备商用的开始。     

浙江省嘉兴市浅层地温能资源量评价研究

随着嘉兴市社会经济的发展所带来的能源高消耗和强污染,节能势在必行,而浅层地温能以其经济节能、环境效益显著等优点获得社会的一致认可。通过对嘉兴地区岩土体热物性测试,获取了该区域不同岩土体热物性参数,对嘉兴城区浅层地温能资源量进行了评价,包括热容量计算和可利用资源量统计,获得了该市浅层地温能资源量的分布情况,有效评价了嘉兴城区浅层地温能的资源潜力,为嘉兴市浅层地温能地源的开发提供了重要数据支持和指导作用。     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

2014 second batch of rare earth quota released

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矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586