太阳能技术在新疆油田的应用研究

以新疆地区太阳能开发优越的自然条件分析为基础,介绍了太阳能发电抽油机技术、供热水的应用,以及太阳能发电供热水的技术原理、系统构成、重要技术参数等。通过实际应用,解析了太阳能利用中最关键的经济效益和节能减排效益两方面的问题,并通过与常规燃煤火力发电技术的对比分析,证明了太阳能发电供热的技术优越性。太阳能发电供热的大规模推广应用,对响应国家节能减排政策,提高油田的节能减排效益和经济效益,创建绿色油气田具有深远的意义。     

生化恐怖威胁谱系研究进展

评述国内外生化恐怖威胁谱系研究现状;从基于综合因素、基于使用可能、基于杀伤破坏能力和基于袭击主体等方面对生化恐怖威胁源的分类体系和威胁清单进行归纳与梳理;建立了以易得性、毒害性、可用性和防护性为主要评价指标的生化恐怖威胁源评估体系;对进一步开展生化恐怖威胁谱系研究提出了若干建议和思考。研究表明:生化恐怖威胁谱系是一个动态的复杂概念集合,科学地确定评价指标、深入开展生化恐怖威胁谱系研究对于鉴别生化恐怖威胁源及建设反生化恐怖技术能力意义重大。     

太阳能路灯技术的国内外研究动态及其在浙江新农村建设中的应用

针对中国太阳能利用技术的现状，分析比较了太阳能路灯在国内利用的可行性，详细介绍了浙江某示范村的太阳能路灯工程情况，并对该工程进行了经济可行性的分析。     

复合絮凝剂聚硅酸铝铁的形貌结构及性能研究

向聚硅酸中引入铝盐、铁盐制得聚硅酸铝铁(PFAS)复合絮凝剂,用电子显微镜观察分析了不同Al/Fe/Si摩尔比的PFAS形貌,用红外光谱研究了其中铝离子、铁离子与聚硅酸的相互作用情况,并对其絮凝性能进行了考察.结果发现:聚硅酸铝铁的形貌均为枝杈状聚集态,并带有分形特征,完全不同于聚硅酸的球形或椭球形,也不同于聚铝、聚合铝铁的晶形;Al/Fe/Si摩尔比对形貌有较大影响.红外光谱证实了PFAS中部分铝离子、铁离子及水解络合铝离子、铁离子可与共存的聚硅酸起螯合(络合)反应生成铁铝硅聚合物,PFAS的絮凝性能高于聚硅酸铝、聚硅酸铁.     

RESIDUAL POWER AND ECONOMIC FEASIBILITY OF A SOLAR POWERED IRRIGATION SYSTEM1

ABSTRACT: The problem of nonmatching irrigation and solar power production seasons creates the problem of what to do with the surplus power. The economic law of opportunity cost dictates that substitution for currently commercially purchased power is the best use for this power. This law also allows for new power using enterprises that satisfy specific criteria to be used on the farm before sale of the residual to a local public utility can be considered. Economic and Financial Evaluation of the solar powered irrigation system show that the price of commercially purchased power must reach 9.5 cents per Kwh before the system is feasible under the ideal assumption of complete use of the residual power to substitute for commercially purchased power.     

大气中γ辐射空气吸收剂量率的波动机制

基于广西防城港市、福建福清市和宁德市的3个滨海核电厂周边γ辐射空气吸收剂量率长时间高频率的连续观测数据,从不同时间尺度进行系统解析.研究发现,在年际尺度上,2014～2020年间宁德嵛山岛站位γ辐射空气吸收剂量率呈现先上升后下降的趋势,与太阳活动的先减弱后增强存在一定的反相位关联;在季节尺度上,2019年度3个站位的观...     

使用开关电源的产品的电磁干扰抑制对策实例

本文简要介绍了开关电源产生电磁干扰的机理以及滤波的原理,并结合实例论述了一种较为实用的开关电源电磁干扰抑制方法。     

TiO2与Cu2O光催化降解对硝基苯酚比较研究

分别采用自制的纳米TiO2和Cu2O研究对硝基苯酚的光催化降解.结果表明,模拟阳光条件下,100mg·l-1对硝基苯酚水溶液的氧化亚铜催化反应半衰期为20.0min,而二氧化钛不具备可见光催化能力;在SGY-1多功能光化学反应器中,TiO2催化降解对硝基苯酚的半衰期是48.1min.产物分析表明,n-型半导体二氧化钛的光催化反应存在两种降解历程,生成二羟基硝基苯或脱除硝基.而p-型半导体氧化亚铜催化的光降解反应未检出脱硝基产物,仅检出1,2-二羟基-4-硝基苯.     

Development of new monthly global and diffuse solar irradiation estimation methodologies and comparisons

In assessing and deciding the prediction schemes of solar irradiation countrywide, better the accuracy means better the management of energy transition toward renewables. Consequently, the present study is on the development of new models to make the most accurate possible estimations of the global and diffuse solar irradiation based on ground measurements. Such analysis produces the most accurate estimations for the input of solar energy systems. This is utmost significant for deciding the investments on solar energy systems and their design periods. Turkey is a high-potent country whose solar energy market has been growing rapidly. She doesn’t have adequate reliable measurement network and there is no estimation methodology developed for each and every point within its territory. Moreover, installing such a measurement system network doesn’t seem to be economically feasible and technically possible, inter alia. Accordingly, this study defines a methodology to make the most accurate estimations of monthly mean daily solar irradiation on horizontal surface and its diffuse and beam components. For the global and diffuse estimations, new methodologies in linear and quadratic forms are developed, compared, and discussed. The comparison is applied by using mean bias error and root mean square error statistical comparison methods. The measured data values used for modeling and comparisons are provided from the State Meteorological Service of Turkey responsible authority for solar irradiation measurements. The results revealed that the methodologies explained in this study give very high accurate values of total solar irradiation on a horizontal surface and its diffuse component.