Energy-saving Technology of Vent in Passive Solar Wall of Rural House of Severe Cold Region

This paper aims at solving the problems of low thermal collection rate,inconvenient maintenance,hindering indoor using during the application of passive solar technologies in rural houses in severe cold region.All these defects prevent the passive solar houses' further development. This paper chooses trombe wall,which has higher thermal efficiency of the passive solar house,as research object. The traditional vent is improved into a new type of ventilation device. This improvement overcomes the shortcoming,which traditional vent loses huge heat,and simplifies the construction of vent. Comparing with traditional trombe wall,the energy saving rate is 15. 69%.

Determinants of agricultural water saving technology adoption:an empirical study of 10 provinces of China

In recent years, China has been faced by an increasingly severe water shortage due to the continual growth of demand on water resources. Although the Chinese government has been actively promoting the agricultural water-saving technology adoption, it is ill-informed of the adoption degree of the current agricultural watersaving technologies as well as the function of the governmental policies, Therefore, this paper＂ analyzes the aforesaid problems based on investigative data of 10 provinces in China. The results demonstrate that although there is a rapid increase of adopted agricultural water-saving technologies, the actual adoption area is rather limited. Moreover, the governmental policies and scarcity of water resources are the deierminants of agricultural water-saving technology adoption. Ultimately, the paper proposes some policy suggestions.

Application of Energy Saving Technology in Trichlorosilane Distillation Purification Process

The trichlorosilane(TCS)purification process consumes a significant amount of energy to achieve the high purity requirement for TCS quality(99.9999%).This work proposed a series of energy saving technology to enhance the TCS purification process,including the conventional process,the conventional process coupled with heat-pump(HP),the multi-effect distillation process,and the dividing-wall columns process.All proposed schemes have been conceptually constructed by Aspen Plus.The design and optimization of the processes have been performed by the sensitivity analysis and the response surface methodology.Moreover,the energy consumption and total annual cost(TAC)for these schemes were discussed.The simulation results show that the TAC of the conventional process coupled with the integrated heat pump can reduce 50.5%of energy consumption as compared with the conventional process;the double-effect and three-effect processes can save 15.6%and 33.8%of energy consumption,respectively;the dividing wall column process and that coupled with the heat pump process can reduce by 22.3%and 48.1%of energy consumption,respectively.It can be found that the operating cost can be saved by using the heat pump technology,while the capital cost increases due to the investment in the compressor,when the processes coupled with the heat pump are used.These results demonstrate that the conventional process coupled with the HP technology has advantages over other distillation schemes for TCS purification in terms of the energy saving and economic effects.

The technology and practice of water saving at Baosteel

With the development of the production scale and the increasing of the process technologies and facilities,product quality and the requirement of water supply continuously put forward new requirements to water treatment technology.The practice of the water saving technology should ensure the safe of water using and the innovation of technique data.Especially the stabilization of water quality should also meet the production at full capacity,reduce equipment failure rate and maintain the sustainable development under the condition of the minimal resource consumption.This article describes the practice of Baosteel saving technology,water-saving ideas from the system to start,according to Baosteel raw water intake requirements and process water and drainage characteristics,water and salt water tidal according to changes in the Yangtze River and the Yangtze River upstream and downstream trends in water discharge on water quality factors,established the electrical conductivity,chloride ion indicators for the control of the Yangtze River water,the implementation of 'avoid salt build light' water at the same time,combined with the actual situation of water pollution in the Yangtze River,the use of force coefficient correlation theory,the implementation of 'avoid taking clear pollution' to ensure the quality of raw water intake. System and cascade utilization of water,process water,based on whole plant water balance testing, analysis,technical parameters of the system and processes the user running the pressure balance pipe network,and implemented a stabilization system to adjust water pressure,reducing the water supply network systemwater loss;application of electrochemical principles,the implementation of the protection of underground pipes Baosteel,implemented a water use,steps to use,the operating mode of water supply in series to increase water reuse,reduce wastewater discharge system. Water quality stability and water-saving in the process;carry out water quality stability technology in the different complicated processes of the steel industry;apply the environmental protection and water quality, sterilization,non-phosphorus and low phosphorus technologies which are suitable for high concentration of circulating water.By these technologies,we achieved the water-saving in the process in different seasons and solved the technical problems affecting production such as equipment corrosion,scaling and the formation of the water quality proprietary technology under the conditions of high heat load production as well. The use of water ecological conservation and biological treatment technology:the implementation of the reservoir to the ecological technology is characterized by food chain and wetland environmental technology characterized by plants chain.Reservoir ecological management techniques in the use of natural conditions, wind direction,temperature,light and fish biomass in the reservoir water level regulation of balance and combination of organic,control and resolve the reservoirs in spring and summer algae problems and water quality changes rot of the 'fresh' operating problems.The artificial wetland technology develops a new way for metallurgical plants' wastewater treatment.All the measures by the implementation of water to create the conditions for the system to achieve the water target of constant innovation,reaching the advanced level of iron and steel enterprises.

Key Points of Installation Technology and Analysis of Energy Saving Measures on HVAC Equipment

HVAC equipment is very concerned in the current equipment operation process.Its safety,reliability and comfort will have a greater impact on the production and life of common people.In some projects,there are some problems in the installation of HVAC equipment,such as imperfect installation scheme,low installation quality and random selection of equipment parameters.These seriously affect the normal operation of the equipment,and it is not easy to achieve energy saving of HVAC equipment.In the future installation of HVAC equipment,it is necessary to continuously optimize the HVAC equipment installation system,fully compare the reliability and feasibility of the equipment installation scheme,and strengthen the application of energy-saving technology of HVAC equipment.In this way,the use cost of the equipment can be reduced and the comprehensive quality of the equipment can be improved.Therefore,this paper discusses this further and puts forward reasonable suggestions.

The Research on Energy Saving Technology Management of Urban Rail Transit

This paper summarizes the encrgy consumption of rail transit and the current situation of energy saving. Then it puts forward a number of policy support measures on the technology management from several aspects, such as the raft line, traction power supply, energy-saving mode and so on The related research helps urban rail transit enterprises save energy consumption, reduce costs to improve their market competitiveness, as well as to promote the enterprises to fulfill social responsibility and carry out the sustainable development idea.

Discussion about the standard system on urban domestic water saving technology in China

Standard is the technical foundation of national economic and social development, and it is the basic rule of establishing social regulation. Researching and constituting the standard system of urban domestic water saving technology is to offer important science basis for revising standard plan and standardize research plan. This paper introduces the present situation of our urban domestic water saving technical standard system, problem and the development direction in the future, as well as project planning of constructing urban domestic water saving technical standard system.

Energy saving analysis for CO_(2)–O_(2)mixed injection technology in converter steelmaking

Energy-saving in China's iron and steel industry still relies on the development and improvement of short-term energy saving technologies.Therefore,a special converter smelting technology incorporating energy saving was proposed.To evaluate the energy-saving potential of the CO_(2)–O_(2)mixed injection(COMI)technology,collected production data were used to develop an improved techno-economic model.Calculations reveal that the technology can save energy through auxiliary material consumption,sensible heat of solid by-product,iron loss reduction,and energy recovery.The application of COMI technology in an enterprise is cost effective,involving the energy saving potential of 0.206 GJ/t,the cost of conserved energy of−48.83 yuan/GJ,and a simple payback period of 0.35 year for a 60-million-yuan investment.Sensitivity analysis shows that the investment cost and discount rate primarily influence the cost of conserved energy of the technology.As the discount rate increased,the cost of conserved energy also gradually increased.Overall,the COMI technology is an energy-saving technology with good development prospects.

Application of the waste heat recovery system and energy-saving in the strip continuous annealing furnace

The common problem of cold strip continuous annealing furnaces is high exhaust gas temperature and great energy consumption. Taking the cold-strip continuous annealing furnaces of Baosteel No. 4 cold mill plant as an example, several waste heat recovery systems in the annealing furnaces are compared and their advantages and disadvantages are analyzed through different energy-saving technologies.

The application of the regenerative combustion technology to a radiant-tube furnace and its practice

This study compares the regenerative radiant-tube heater with the traditional radiant-tube heater, showing the regenerative radiant-tube heaters have many advantages in fuel consumption. Based on the experience of changing a heating system with traditional radiant-tube burners to a heating system with regenerative combustion, propositions are given for the combustion control system, pilot burner, flame detection and for trouble prevention in rebuilding the continuous annealing production line（CAPL） and the continuous galvanizing line（CGL）.

西南水稻主产区用水现状与绿色高效灌排技术

西南水稻主产区面临季节性干旱、工程性缺水等生产问题,绿色高效灌排技术是该区域实现节水稳产增效的关键举措,对保障国家粮食安全具有重要意义。本文系统梳理了包括云南省、贵州省、四川省、重庆市在内的西南地区水稻生产用水现状和灌排技术现状,阐述了西南水稻主产区绿色高效灌排体系的基本特征、绿色高效灌排的具体技术类型,提出了由稻田精准需水预报、灌区精量配水管理、田间高效用水管理、田间高效排水管理构成的绿色高效灌排技术模式。研究发现,西南水稻主产区水资源丰富但时空分布不均,节水灌溉和排水技术落后且对各地区气候条件、水资源量、地形的适用性有较大差异。建议研发稻田灌排高效协同调控新技术、推广绿色高效灌排技术体系、优化稻田水肥运筹模式、开发稻田智能灌排与信息化管理系统、构建水稻绿色高效灌排技术多维推广体系,据此推动西南水稻主产区节水提质增效与绿色减污降排多赢。

中国农业节水十年:成就、挑战及对策

水是农业的命脉。在水资源紧缺形势下,保障国家食物安全和农产品有效供给,必须实施农业节水,发展高水效农业。在系统总结过去10年我国农业节水在保障国家食物安全和农产品有效供给、促进区域农业可持续发展和生态环境改善、促进现代农业转型升级和提质增效以及带动农业节水产业发展等方面取得的巨大成就基础上,分析了当前我国农业节水与国际先进水平的差距,以及在农业节水相关基础数据观测和长期积累、节水评价指标体系和考核标准、灌溉面积盲目扩张与农业适水发展、灌区续建配套节水改造和高标准农田建设衔接、高效节水灌溉与农艺技术配套、农业水价综合改革与节水灌溉工程设施可持续运行机制和政策、农业节水科技创新与节水产业发展等方面面临的问题和挑战,提出了促进农业节水高质量发展的建议。

基于物联网农业灌溉系统精准控制模型的研究

为进一步提升我国农业灌溉系统的综合作业效率,体现灌溉的先进性与科学性,提出以精准控制模型为切入点,以物联网技术为主体支撑平台,针对其作业系统展开设计与优化。通过引入物联网强大的系统性架构,规范与强化各网络节点的部署与协作关系,科学搭建用于实现精准灌溉控制的数学模型,同时导入合理的系统软件设计程序与硬件功能组件配置,形成完整集成式的农业智能灌溉系统。结果表明:基于物联网平台技术的精准控制模型应用后,整体的作业效率得到显著提升,系统精准度、系统响应率分别相对提高了6.25%和7.68%,动作延迟率相对降低了2.72%,灌溉节水效率提升至91.50%。物联网平台下的精准控制模型应用效果良好,设计理念正确,可为灌溉领域实施节能降耗提供参考。

城市轨道交通车辆基地用电节能新技术的应用

[目的]车辆基地用电量占城市轨道交通总用电量的比例较大。为了降低车辆基地的用电量,需结合用电节能新技术研究其在城市轨道交通车辆基地中的应用。[方法]通过分析车辆基地的功能布局和设备设施用电量,结合用电节能新技术的应用状况,对光能技术、节能灯具技术及智能照明控制技术等在车辆基地中应用的可行性进行了研究,分析了太阳能加热器、光伏发电设施、管道式日光照明系统、高大厂房光源、智能照明控制系统等的节能效果及效益。[结果及结论]太阳能加热器、光伏发电设施及管道式日光照明系统等用电节能新技术在车辆基地的应用中能够取得显著的节能效果;无极灯在车辆基地高大厂房的应用中具有较强优势,能避免产生大面积的光晕现象,较金卤灯年节省用电量39.8%;智能照明控制系统可对车辆基地照明系统实现智能管理和控制,使车辆基地照明按最佳经济方式运行,较非智能照明系统可节能10%~20%,有效降低了运营成本。

炼化企业低温热系统优化技术及应用

石油炼化企业低温热系统有着巨大的节能潜力,但并没有得到企业足够的重视。针对企业低温热系统存在建设、管理分散,运行经济性低等实际问题,为了满足企业降低成本、节能减耗的目的,深入剖析了现今炼化企业低温热系统优化的关键问题,提出了炼化企业低温热系统的优化技术,建立了低温热系统的全流程优化模型,开展了低温热系统的操作优化与改造优化。应用结果表明,该技术节能降碳效果显著,而且大大提升了企业低温热系统的数字化水平。

“绿数互联”——基于蒙德里安新造型主义的展览建筑节能技术研究

在建筑的全寿命周期内,最大限度地节能减排是建筑设计的趋势。文章以蒙德里安造型的展览建筑为例,提出将参数化设计与性能模拟技术相结合,并在建筑设计阶段融入绿色建筑技术的新思路,以此提升绿色建筑设计的效率和质量。

数控技术在农机零部件加工中的优化及应用

随着农业机械加工及制造行业的快速发展,为了满足农业机械多样化设计要求,数控节能加工技术通过精密的计算机控制,能够实现对农机零部件加工过程中各个参数的准确控制。针对传统农机零部件加工过程能耗大及难以控制的问题,基于带精英策略的非支配排序遗传算法NSGA-Ⅱ对加工工艺参数进行多目标优化,并进行实验对比分析。研究结果对于提高农机零部件加工精度、降低能耗、减少加工时间等提供技术参考与借鉴。

新型灌溉技术在果树中应用的研究进展

果树是我国农业中重要的支柱产业,而我国水资源匮乏是影响果树生产的瓶颈问题。近年,研究学者根据果树的需水特性、生长发育规律、栽培环境条件等因素,研制多种新型节水灌溉技术,并得到较好的试验印证效果,该文将国内外有关新型灌溉技术在果树中的研究进行综合阐述,并对今后新型灌溉技术进行展望,以期将新型灌溉技术更好地服务于果树生产、提高果园管理水平提供借鉴。

外窗节能设计与集成技术

建筑外窗作为建筑围护构件中最不节能的部件,包括传热系数(U值)、可见光透射率(T_(vis))、太阳热增益系数(S_(HGC))等在内的光热性能指标直接影响了建筑的能耗。为了更加全面地了解建筑外窗节能设计的关键技术,通过数据库资料详细梳理了前人的相关研究成果。研究发现:窗墙比、建筑遮阳、窗框、窗玻璃、气密性等是影响建筑外窗节能的关键要素;集成技术在外窗节能设计方面具有明显的优越性,能够极大提高外窗的节能效率;人的行为方式对外窗节能效率也会产生较大的影响。

无线灌溉控制系统的设计与试验

南疆的温带大陆性气候为棉花生长提供了良好的自然条件,该地区棉花种植范围广,但干旱少雨。为解决传统灌溉方式自动化程度低、水资源浪费严重等问题,本文以LoRa无线通信、传感器、远程控制等技术,设计了一套基于LoRa通信技术的农业灌溉控制系统。该系统采用高精度土壤墒情传感器,远程在线采集土壤温湿度,远程控制电磁阀开关等控制方式,获得作物最佳灌溉时间、灌溉水量。试验结果表明:应用该系统进行灌溉后,灌溉效率有了显著提高,灌溉均匀度可达95%以上,效果良好,可为大田灌溉提供参考。