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%.

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.

Indicator system of energy efficient technologies evaluation of residential buildings in hot summer and cold winter regions of China

The related existing energy saving index system of buildings is deficient in direction, index coverage, depth, and technological and economic considerations. Aiming at the deficient existing research and with the advancement of energy saving of buildings in China from northern heating regions to southern hot summer and cold winter regions, selecting residential buildings in hot summer and cold winter regions as the research object, and through much evaluation index reference and repeated demonstrations and the borrowing of literature research home and abroad and relevant energy saving standards, filters and eliminates energy efficient technologies evaluation indexes according to the design principle of index system, the factors influencing the energy saving of residential buildings are evaluated, index system weight is established by adopting analytic hierarchy process, and finally the evaluation index system of energy saving technologies of residential buildings in hot summer and cold winter area of China is established. Each target layer includes five standard layer indexes and sixteen index layer indexes. The standard layer of evaluation index, namely primary indexes, includes the technological, energy saving effect, economic, environmental, and social indexes. The secondary indexes are selected based on the principles of concision, comprehensiveness, representativeness and operability.

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.

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.

Construction practice of market system for energy saving renovation of existing buildings

The energy-saving reconstruction market of existing buildings is a complex system.It includes three subsystems:service market,capital market and technology market.The service market takes the relationship between energy service companies and owners as the core to establish service associated relationships.The capital market is based on the mechanism of"investment guarantees and risk sharing"to form structures of the capital market.The technology market relies on the"industry-university-research"mode to build technology supporting platforms.Being interdependent and mutually restricted,the three subsystems form the complete system of existing buildings in energy-saving reconstruction.

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）.

MA-2吸收剂在国能锦界电厂15万t/a碳捕集装置上的应用研究

由中石化南京化工研究院开发的MA系列(用于低分压碳捕集)吸收剂已经在国内近10套万吨级碳捕集示范装置上成功运行。较为详细地讨论了该系列中MA-2吸收剂在国能锦界电厂15万t/a碳捕集装置上的运行情况,在设计进气量条件下,考察了气液比、捕集率等因素对再生能耗的影响并确定了较优值分别为34 m3/m3及95.2%,对应再生能耗最低为2.72 GJ/t。在上述条件下又逐步考察半富液级间冷却、富液分流、贫液MVR等节能工艺对再生能耗的影响并确定较优值,即当富液分流比为5%,级间冷却为40℃,MVR压差为50 kPa时,装置再生能耗最低仅为2.30 GJ/t。考察了不同工况下MA-2吸收剂的逃逸情况为31~59 mg/m3。

基于S7-300PLC在循环水节能系统中的应用

做好节能降耗是企业控制生产成本的方式之一,也是响应国家关于节能减排的号召。随着工业自动化的不断发展,通信技术和控制技术的不断进步,各种节能措施不断涌现。在满足循环水系统的工艺要求下,本节能系统采用西门子S7-300PLC,通过PLC的逻辑控制程序控制系统各种工艺参数的检测和设备运行的控制,从而达到节能的效果。

基于5G-A/6G网络的绿色低碳技术分析

文中分析和探讨了5G-A/6G网络中的绿色低碳技术。首先,从硬件节能技术、软件节能技术、智能化节能技术、共建共享节能技术等方面,深入分析了5G-A/6G网络中的绿色低碳技术。其次,系统研究了5G-A/6G网络绿色低碳技术的演进趋势,包括智能节能调度、高效共建共享策略、极简网络架构设计、绿色器件应用等。通过研究,希望能为5G-A/6G网络的绿色低碳发展提供有力的理论支持和具体实践指导。

汽油发动机稀薄燃烧技术特性分析与应用

发动机节能技术一直是汽车制造厂商和科研工作者研究的重点,其中发动机稀薄燃烧节能技术最具有代表性。利用文献分析法综述了汽油发动机稀薄燃烧技术的机理、技术实现途径及应用情况,发现发动机稀燃技术具有明显的节能效果,可为相关领域科研工作者提供理论参考。

Application of Renewable Energies in the Construction of New Rural Residences

Based on the significance of renewable resources in relieving energy crisis,application of renewable resources for reducing energy consumption of rural housings and carbon emission of traditional energies are believed as an inevitable choice for the construction of a conservation-minded society.Taking easily-acquired and low-cost solar energy,biomass energy and rainwater for example,strategies of applying renewable resources in rural housings are discussed.And the research focuses on the application of solar energy PV Power System and solar energy photo-thermal power system in rural residence,significance of power system such as methane and waste reusing for the integrated utilization of biomass energy and residence,and also recycling and cooling effects of intermediate water.

高耗能产业技术创新-节能效率-减排效率协同发展的影响因素

为促进我国高耗能产业技术创新-节能效率-减排效率系统协同发展,在高耗能产业技术创新、节能效率、减排效率子系统间协同发展程度测算结果的基础上,利用PEST分析方法从4个维度分析系统协同程度的影响因素,并构建回归模型实证研究其影响程度和方向;根据实证分析结果,设计高耗能产业技术创新、节能效率、减排效率系统协同发展的动力机制、协调机制、约束机制和风险管理机制。

基于碳中和的人-机-料-法-环五位一体纺纱新技术解析

传统纺纱工序长而散、用工多,造成单产能耗高、产品一致性差、运营成本高等行业痛点问题;纱线原料的多元化使原料及成品回收难度大。为实现2030年碳达峰、2060年碳中和目标,提出了人-机-料-法-环的五位一体化碳中和纺纱的低碳生产策略,凝练并分析了集约型、简约型和延伸型低碳纺纱技术。分析结果表明:与传统纺纱相比,集约型智能纺技术运行成本降低32.67%,单位产品能耗降低17.5%、产品不良率降低61.54%,有效解决了纺纱行业的痛点问题,实现低碳高质纺纱;简约型高速纺纱技术能缩短或消除纺纱流程,纺纱速度高达550 m/min,实现了降低碳排放、提高效率的目标;低碳纺纱发展方向要向前后端延伸,对前端原料要多应用功能化循环利用技术、变废为宝技术、节能减排技术,在中端要发展固碳纺纱技术和循环利用技术,在终端研发绿色环保纺织品的制冷、隔热等功能纱制备技术。

我国工业化、城市化对能源消费强度的动态效应与区域差异——基于动态面板数据模型的系统广义矩(SYS-GMM)分析方法

基于2002-2012年中国的省际面板数据,将能源消费强度分为低、中和高三个层次,运用动态面板数据模型的系统广义矩(SYS-GMM)分析方法,对工业化、城市化对中国能源消费强度的动态效应与区域差异进行了实证分析。研究结果表明,工业化、城市化水平提高均会导致地区间能源消费强度的增加,但城市化对低能源消费强度区域的影响并不显著,而对高能源消费强度区域的影响却十分明显。此外,上一期的能源消费强度、地区经济发展水平、能源价格和技术创新等均对中国能源消费强度产生不同的影响,而且中国存在技术创新的反弹性效应且能源价格对技术创新有诱致性作用。

变频技术在DC-DC变换器中的研究与应用

提出了一种根据功率管导通时间,变换器在一组预先设定的频率之间自动选择工作频率的控制方法,在轻载时,能减小开关管的驱动损耗从而提高了效率,在提高瞬态响应速度的同时有助于实现变换器的高功率密度和成本的降低。实验数据表明,变换器在输出稳定的电压及驱动能力的同时,轻载时效率提高了近24%,因此该方法特别适用于电池供电的便携式仪器仪表设备,其能保持较长的电池使用时间。

资源型地区技术创新发展路径研究--以内蒙古为例

技术创新与技术进步是完成我国供给侧结构性改革、实现产品供给转型升级的关键,也是有效实现节能减排最重要的方式。从面上来看,我国节能减排在技术创新、技术进步以及提高技术效率上还有很大空间。在适当的市场环境和政策条件下,企业完全有动力也有能力通过技术创新来实现大幅度的节能减排,甚至由此盈利。目前我国经济结构调整、产业转型升级正处于阵痛期,经济增长放缓,这为我们冷静思考下一轮经济实现健康稳定可持续发展、采取技术创新实现产业转型升级赢得了宝贵时间。

YB32-200型压力机液压系统节能设计

环境恶化和能源危机使得在工程技术领域内,以"节能"、"环保"为特征的绿色液压技术得到推广和应用。材料成型设备YB32-200型压力机应用广泛,从节能角度对原有液压系统进行节能改造,利用蓄能器回收主液压缸无杠腔的高压能量,并应用西门子200PLC代替原有继电器控制,使压力机更加节能、工艺动作更准确、可控性更高。

减排约束下电力结构预测与优化研究--以江苏省2030年电力结构为例

以总发电成本最小为优化目标,考虑供需平衡、环境容量、技术扩散等影响因素,构建电力结构优化模型,分情景对2030年江苏省煤电和新能源发电装机容量进行预测。研究结果表明:(1)基准情景中煤电装机容量预计为7 373万kW,新能源将达到5 357万kW;(2)需求情景中,随着电力需求增速加快,煤电装机容量占比将由67.1%下降至51.2%,而风光发电装机将分别达到14.7%和19.9%;(3)减排情景中,减排力度的不断强化将促使煤电进一步减少,而风光发电装机将增长至15.7%和19.5%。因此,江苏省应着重发展能源互联网,加快风光发电技术创新和规模化生产。