太阳能LED杀虫灯的研究

太阳能光伏和LED照明技术是最有前景的无公害灭虫技术之一.为了开发低成本的无公害灭虫技术,设计了一种太阳能光伏LED杀虫灯系统.通过试验研究,取得了一定的效果.文章简述了害虫的趋光性、LED灯的光学特性和基于LED的杀虫技术.     

依靠科技进步推进节能降耗

2006年2月16日的《中国冶金报》刊登中国金属学会题为《谁是2005年的领跑者》的权威文章,:公布了2005年我国钢铁生产指标之最,在电炉生产一栏中,兴澄特钢以235千瓦时/吨名列全国电炉生产综合电耗最低.     

Research on an Arc Air-Lubricating Oil Radiator Equipped in Internal Surface of Air Intake for the Aero Engine

Due to huge-power aircraft development and more electronic devices applied onboard,high heat flow density and uneven thermal distribution are becoming new problems.One new try is adding an air-lubricating oil radiator as the secondary cooling component but there are still few reports on its research.Therefore,this paper proposes a newly-design plate-fin air-lubricating oil radiator different from tube-fin or shell-tube conventionally used in previous engine system.This radiator is arc,and equipped in internal surface of air intake.Numerical and experimental analyses were carried out on fin performance.Their results agreed well with average error of 13%on thermal resistance.Then heat and flow behaviors of oil side were presented with different structures and sizes of flowing passage.According to all research,optimized radiator is gained with fin spacing of 3.76 mm,fin thickness of 2 mm,single flowing path with width of 13 mm and gradient inlet and outlet.Its heat dissipation of 28.35 k W and pressure loss of 2.2 MPa can meet actual working requirements.The research proves an air-lubricating oil radiator with arc structure and layout mode of internal surface to be feasible,which is a new but efficient cooling scheme and can lead to an innovative but wide use in modern aircrafts.     

金晶出任太阳雨太阳能残奥助威团形象大使

5月6日,中国残奥委、中国残疾人事业新闻宣传促进会在人民大会堂联合举行新闻发布会宣布,我国能源行业新贵江苏太阳雨太阳能集团成为残奥助威团全程独家合作伙伴,在圣火传递中感动全球的残疾人运动员金晶成为"残奥助威团"的形象大使.     

1341材料在循环水泵上的应用

对热电厂发电机的三台循环水泵的运行状况进行了分析,并用BELZONA1341材料对水泵叶轮的表面进行了处理,减少了叶轮表面与水流的阻力和涡流的产生,降低了电机的有功电流,节约了电能,并且延长设备的寿命,效果十分明显.     

Analysis of Heat and Mass Transfer for a Single-Planar-Anode-Supported Solid Oxide Fuel Cell Considering Internal Reforming

The temperature uniformity and component concentration distributions in solid oxide fuel cells during operating processes can influence the cell electrochemical and thermal characteristics.A three-dimensional thermal-fluid numerical model including electrochemical reactions and water-gas-shift(WGS)reaction for a single channel solid oxide fuel cell was developed to study the steady-state characteristics,which include distributions of the temperature(T),temperature gradient((35)T/(35)x),and fuel utilization.It was shown that the maximum temperature(Tmax)changed with operating voltage and the maximum temperature gradient(((35)T/(35)x)max)occurred at the inlet of the channel of a solid oxide fuel cell by simulation.Moreover,the natural convection condition had a great influence on T and(35)T/(35)x.The thermal stress generated by temperature differences was the key parameter and increasing the convection heat-transfer coefficient can greatly reduce the thermal stress.In addition,the results also showed that there were lower temperature gradients and lower current density at high working voltage;therefore,choosing the proper operating voltage can obtain better cell performance.     

微型燃气轮机表面式回热器的应力分析

应用ANSYS软件,对100kW高效紧凑式微型燃气轮机用表面式回热器进行了应力分析,验证了选用的换热片材料(0Cr18Ni11Nb)的可靠性.结果表明:温度载荷所产生的热应力是应力中的主要部分,温度每升高50K,应力增大6MPa;换热片设计成燃气通道截面积大于空气通道截面积时具有最高的强度.     

木醋液的精制方法及其在农林生产上的应用

木醋液的性能越来越受到人们的重视,逐渐成为人们研究的热点.文章概述了木醋液精制方法的种类、原理和现状,并对其在农林生产上的应用作了详细的介绍,对木醋液的研究提出了相应的见解.     

风力机塔筒抗台风设计

总结了一套计算风力机塔筒静态强度的理论方法,计算了1.5MW风力机,风速在0～75m/s变化过程中塔筒的静态挠度、弯矩、弯应力及底端连接螺栓的拉应力.从而为改进风力机的抗台风设计提供了很好的依据.计算结果表明,叶片顺桨成功后,风向突然偏转90°是一个非常危险的工况.变桨距风力机要提高抗台风能力,一方面要尽量减少变桨距传动及控制系统的响应时间,另一方面可以把桨叶设计成柔性桨叶,当台风袭来时,桨叶变形,使其受力大大减少,保护机组主体不受损坏.     

2007年中国-欧盟能源环境项目执行动态

<正>中国-欧盟能源环境项目是中国和欧盟在能源环境方面合作开展的一个政府技术援助项目,2007年,中国-欧盟能源环境项目在国家发展和改革委员会和欧盟驻华代表处的高度重视和领导下,在资源节约和环境保护司、能源局等相关部门、机构的指导和大力支持、     

Estimating nonprocess energy from building energy consumption

From this research, an important technique for estimating the nonprocess energy (also known as overhead energy) in industrial and manufacturing buildings was examined. The building energy data for six industrial facilities were collected over multiple months in which production varied over these months. This technique then used a regression of monthly building energy or utilities' use versus monthly production rate. The nonprocess energy was estimated for each facility as the energy extrapolated to zero production in these regression models. The range of monthly production data was also used to determine a midpoint or average production at each facility and the corresponding average total building energy (process and nonprocess). The energy at zero production, as a percentage of the midpoint production energy, was thus the nonprocess energy percentage. In addition, the zero production power intensity (in watts per square meter) was compared to industry average nonprocess energy intensities (heating, cooling, lighting, and ventilation) to interpret the nature and possible improvement in nonprocess energy.     

实施能源审计,促进节能降耗

就目前中国石油天然气集团公司节能降耗的工作任务,以及企业能源审计中存在的问题、开展能源审计工作的难点及对策进行了详细的阐述。并根据国家能源审计的要求,探讨石油企业能源审计方法,为企业能源审计的发展提出了建立一套科学规范、可操作性强的审计思路。     

The effect of energy performance regulations on energy consumption

Governments have developed energy performance regulations in order to lower energy consumption in the housing stock. Most of these regulations are based on the thermal quality of the buildings. In the Netherlands, the energy efficiency for new buildings is expressed as the EPC (energy performance coefficient). Studies have indicated that energy regulations are successful in lowering the energy consumption in residential buildings. However, the actual energy consumption is usually different from the expected energy consumption. This paper explores the effectiveness of energy performance regulations in lowering the energy consumption of dwellings built in the Netherlands after 1996. The effect of the EPC and thermal characteristics on energy consumption was determined by statistical analyses of data on actual energy consumption. The results showed that energy reductions are seen in dwellings built after the introduction of energy performance regulations. However, results suggest that to effectively reduce energy consumption, the tightening of the EPC in not enough. Policies aimed at controlling the construction quality and changing occupant behaviour are also necessary to achieve further energy reductions.     

Singapore energy consumption and conservation

The paper gives a brief account of the energy situation in Singapore, which is a city-state with no natural energy resources. Singapore is not only a growing industrial center, but also a major sea and air port. Therefore, it handles considerable amounts of bunkers for ships and airplanes operating under the flags of many nations. Singapore is also the site of the third largest oil refining complex in the world, processing crude oil for a number of countries.The domestic energy-management policy is characterized by thrift and is enforced by strict administrative and financial measures. Steps taken to arrest the proliferation of oil-thirsty automobiles and to encourage the citizenry to use public transport proved to be very effective. On the whole the government keeps the energy problem in its grasp.     

Sectoral energy consumption in Turkey

Turkey expects a very large growth in energy demand, especially for electricity and natural gas. Today, Turkey’s energy production meets nearly 48% of the total primary energy demand. Total primary energy demand will reach 98 Mtoe in 2001 and 308 Mtoe in 2020. Import of primary energy will reach 226 Mtoe and production of primary energy will increase 81 Mtoe in 2020. As seen, Turkey is an importer country for primary energy. Turkey’s indigenous energy sources are limited, and the country is heavily dependent on the import of primary energy from abroad. The growth of Turkey’s industry is giving rise to a substantial increase in energy demand. In this paper, the primary energy production and sectoral consumption in Turkey is investigated. Further, a sectoral energy demand projection in Turkey is given until 2020.     

企业节能降耗大有作为

文章从技术改造、工艺创新和加强能源管理等方面阐述了在目前能源紧张状况下，企业节能降耗的潜力较大。     

能源审计工作推进节能降耗进程

阐述能源审计的概念及实施能源审计的作用,简单介绍能源审计的发展及我国实施能源审计所涵盖的内容,探讨广东省开展能源审计工作所存在的问题,针对其节能环节提出建议。     

电动汽车的能耗效率分析及提高能耗经济性的研究

通过对比电动汽车和内燃机汽油车的热效率及能耗,得出电动汽车的热效率及能耗明显优于内燃机汽油车的结论,并推断出降低电动汽车的运行能耗、提高其经济性是推动电动汽车产业化的关键因素之一。从整车动力系统、电池以及充电设备等几个方面分析了提高电动汽车能耗经济的途径,指出了今后需要重点研究的关键性问题。     

Mass effects in residential energy consumption

The objective of this study was to determine the effect of mass on both the annual energy consumption and the maximum rate of energy consumption. There have been recent references in the literature to such effects as ‘mass resistance’, ‘capacity insulation’, and ‘thermal inertia’, suggesting that mass can actually resist the flow of energy through a wall. In this study it is shown that the annual energy comsumption is dependent on the R-factor and the heat capacity per unit area. An example compares two buildings, one with walls that are 400 times as massive as those of the other, and yet the annual energy consumption is identical; hence, the idea of ‘mass resistance’ is to be avoided. The real effect of increased mass is typically to increase the heat capacity. The effect of increased heat capacity in a building is shown to lead to a slight decrease in the annual energy consumption and a significant decrease in the maximum rate of energy consumption.     

Turkey’s net energy consumption

The main goal of this study is to develop the equations for forecasting net energy consumption (NEC) using an artificial neural-network (ANN) technique in order to determine the future level of energy consumption in Turkey. In this study, two different models were used in order to train the neural network. In one of them, population, gross generation, installed capacity and years are used in the input layer of the network (Model 1). Other energy sources are used in input layer of network (Model 2). The net energy consumption is in the output layer for two models. Data from 1975 to 2003 are used for the training. Three years (1981, 1994 and 2003) are used only as test data to confirm this method. The statistical coefficients of multiple determinations (R²-value) for training data are equal to 0.99944 and 0.99913 for Models 1 and 2, respectively. Similarly, R² values for testing data are equal to 0.997386 and 0.999558 for Models 1 and 2, respectively. According to the results, the net energy consumption using the ANN technique has been predicted with acceptable accuracy. Apart from reducing the whole time required, with the ANN approach, it is possible to find solutions that make energy applications more viable and thus more attractive to potential users. It is also expected that this study will be helpful in developing highly applicable energy policies.