火电厂CO2捕集技术浅析

随着温室效应的加剧,CO2减排及回收净化和再利用技术成为各国关注的焦点。介绍了近年来CO2捕集技术的原理及优缺点,并对CO2捕集技术的前景进行了展望。     

输油站队危害控制管理探讨

针对油气管道企业的实际生产运营特点,对风险管理的基本思路进行了探讨,就目前国内外常用危害因素的识别评判方法进行了归纳分析,给出了适合输油站队的风险控制的管理方法和措施。     

电火工品等效天线模型的建立与分析

简要分析了射频能量对电火工品的危害机制,建立了电火工品发火电路的等效天线模型,推导出了电火工品处于最大拾波方向且阻抗匹配的情况下桥丝接收的最大射频功率数学公式,分析了外界电磁场场强和波长变化对桥丝最大接收功率的影响。     

燃煤电厂LXMC型袋式除尘器仿真设计软件的开发研究

文章以某燃煤电厂300MW机组原始资料为研究对象,参考了新的火电厂大气污染物排放标准(GB13223-2011)中对除尘方面的最新要求,以Visual Basic 6.0语言为开发工具,分别从仿真软件的需求分析、内容、层次结构等方面描述了软件开发的缘由和总体的开发思路,探讨了该仿真软件的界面功能设计和界面的美化等,并通过设计结论,分析了袋式除尘器仿真设计软件的各种优点。该软件具有知识库管理功能、工艺仿真功能等。     

南京市水质自动站的发展趋势及管理模式探讨

从水质自动站发展特点和管理两个方面,阐述了南京市水质自动站的做法和经验,总结了水质自动站的发展趋势。     

Rearticulating Nuclear Power: Energy Activism and Contested Common Sense

This essay utilizes the perspective of articulation theory to examine how environmental advocates, public interest organizations, and citizen-consumers have challenged the nuclear industry's expansion efforts, linking strategies at local and global levels. The industry has articulated a material and discursive formation including reactor construction projects, financial and political arrangements, and an overarching narrative of nuclear necessity and inevitability. Opponents have responded by linking organizations, individuals, histories, geographies, and expertise, re-articulating the place of nuclear power in the field of energy choices. This essay examines those opposing articulations in the context of efforts to construct new nuclear power plants in the southeastern USA. There, opponents have challenged state-level regulatory approval of a corporate merger that would facilitate new nuclear construction and financing arrangements that would shift economic risks from the corporation to consumers. These local engagements have broader consequences: in challenging one corporation's nuclear ambitions, opponents also challenge the global industry narrative of nuclear necessity and inevitability.     

Viability of solar photovoltaics as an electricity generation source for Jordan

Viability of solar photovoltaics as an electricity generation source for Jordan was assessed utilising a proposed 5 MW grid‐connected solar photovoltaic power plant. Long‐term (1994–2003) monthly average daily global solar radiation and sunshine duration data for 24 locations – distributed all over the country – were studied and analysed to assess the distribution of radiation and sunshine duration over Jordan, and formed an input to the RetScreen Software for evaluation and analysis of the proposed plant's electricity production and economic feasibility. It was found that depending on the geographical location, the global solar radiation on horizontal surface varied between 1.51 and 2.46 MWh/m²/year with an overall mean value of 2.01 MWh/m²/year for Jordan. The sunshine duration was found to vary, according to the location, between 8.47 and 9.68 hours/day, with a mean value of 9.07 hours/day and about 3311 sunshine hours annually for Jordan. The annual electricity production of the proposed plant varied depending on the location between 6.886 and 11.919 GWh/year, with a mean value of 9.46 GWh/year. The specific yield varied between 340.9 and 196.9 kWh/m², while the mean value was 270.59 kWh/m². Analysis of the annual electricity production of the plant, the specific yield, besides the economic indicators, i.e. internal rate of return, simple payback period, years to positive cash flow, net present value, annual life cycle saving, benefit/cost ratio, and cost of energy – for all sites – showed that Tafila and Karak are the most suitable sites for the solar photovoltaic power plant's development and Wadi Yabis is the worst. The results also showed that an average of 7414.9 tons of greenhouse gases can be avoided annually utilising the proposed plant for electricity generation at any part of Jordan.     

System dynamics modelling of hybrid renewable energy systems and combined heating and power generator

The role of energy in the present world is critical in terms of both economical development and environmental impact. Renewable energy sources are considered essential in addressing these challenges. As a result, a growing number of organisations have been adopting hybrid renewable energy system (HRES) to reduce their environmental impact and sometimes take advantage of various incentives. When a HRES is being planned, the ability to model a HRES can provide an organisation with numerous benefits including the capability of optimising sub-systems, predicting performances and carrying out sensitivity analysis. In this paper, we present a comprehensive system dynamics model of HRES and combined heating and power (CHP) generator. Data from a manufacturing company using HRES and CHP generator are used to validate the model and discuss important findings. The results illustrate that the components of a HRES can have conflicting effects on cost and environmental benefits; thus, there is a need for an organisation to make trade-off decisions. The model can be a platform to further simulate and study the composition and operating strategies of organisations that are venturing to adopt new or additional HRESs.     

基于随机森林模型的辽河高时间分辨率氮、磷浓度模拟与预测

随着环境信息获取技术的飞速发展,水质监测数据逐渐呈现出高时间分辨率的特点.针对传统方法在模拟高频检测数据时的不足,本文基于随机森林建立了河流氮、磷逐日浓度预测模型,识别了影响辽河干流马虎山断面氮、磷浓度变化的主要因素,并预测了未来不同情景下氮、磷浓度变化特征.结果表明：①马虎山断面氮、磷浓度变化的主要影响因素是上游珠尔山断面的来水水质和本断面的流量;②随机森林模型在高时间分辨率的水质指标模拟中具有误差低和拟合优度高的特点,其中,TN浓度预测模型的RMSE为0.40 mg·L^-1,R²为0.95,TP浓度预测模型的RMSE为0.01 mg·L^-1,R²为0.96;③在不同水文、污染控制和来水水质的变化情景下,未来马虎山断面氮、磷浓度变化主要取决于上游 来水水质,加强全流域营养盐控制是确保断面水质稳定达标的重要基础.