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.

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.

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%.

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.

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.

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.

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）.

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。

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。

节能低碳政策对企业技术创新和污染减排的影响

本文通过构建环境规制影响企业创新选择的理论模型,揭示严格的命令-控制型环境规制能够同时产生创新补偿效应、遵循成本效应的理论机制。基于中国工业企业数据库、中国创新企业数据库以及中国工业企业污染排放数据库,以“十二五”期间政府实施“万家企业节能低碳行动”为准实验,构建双重差分模型对上述理论进行验证。研究发现,“万家企业节能低碳行动”这一节能低碳政策能够产生较为明显的“波特效应”,在降低企业污染排放的同时倒逼企业技术创新。机制检验表明,创新补偿效应大于遵循成本效应,是节能低碳政策推动企业技术创新的重要机制。异质性分析显示,与高融资约束企业和非资源型城市相比,节能低碳政策在低融资约束企业和资源型城市中更容易产生“波特效应”。拓展分析发现,伴随节能低碳政策强度由低到高,企业技术创新呈“先降—后升—再降”的倒S型特征,即存在一个“最优政策强度”区间。本文为完善节能低碳政策体系提供了来自发展中国家的理论依据与微观证据。

公众环境关注是否促进减污降碳协同增效?——来自居民与企业的机制考察

在减污降碳亟须协同增效的背景下,探究公众环境关注的协同减污降碳成效与增效路径,有助于以多元共治的环境治理体系建设实现人与自然和谐共生的中国式现代化。基于2011—2021年中国277个地级以上城市数据,通过双向固定效应模型和两阶段最小二乘回归模型,评估公众环境关注的协同减污降碳治理成效,并验证了可能存在的作用机制。研究发现:公众环境关注显著促进了减污降碳协同治理增效,这一结论经过稳健性检验后依然成立;异质性分析发现,协同治理成效随城市规模扩大而持续削弱,资源城市的协同治理成效较非资源城市更为明显。机制分析发现,公众环境关注驱动了企业的绿色技术进步,以创新激励效应促进减污降碳协同增效;同时,公众环境关注培育了居民的绿色节能生活方式,以节能优化效应促进减污降碳协同增效。

农业机械节能减排技术在现代农业中的应用与发展策略

通过查阅相关资料及调查研究的方法,介绍了农业机械节能减排技术在现代农业中的作用。同时,还分析了农业机械节能减排技术在现代农业中的应用,最后,详细阐述了农业机械节能减排技术在现代农业中的发展策略。建议加大政策支持力度,引导农业生产者应用,利用新能源技术,推广节能型农业机械设备,优化农业生产模式,提高设备节能性,完善协同创新机制,加强农业科技创新,重视人才,加强农机高级人才培养与引进。

电气节能与新能源技术的应用

随着电力电子技术的发展,电能逐渐被广泛应用于各个领域。在能源紧缺的时代背景下,加强电气节能技术应用,发展新能源技术,不仅能够缓解当前电能紧缺的问题,也能提升能源的利用率。本文阐述了电气节能与新能源技术应用的意义,探讨了电气节能技术的应用策略,围绕新能源技术应用于电信领域提出了几点措施。

光储一体化电源系统节能分析

文章介绍了光储一体化电源系统项目实施的背景,以及光储一体化电源系统的组成、功能原理、关键技术、主要特性、性能参数等,并进行了节能效果分析计算,对打造绿色低碳机房,实现节能减碳降费将起到重要作用。

石墨化阴极在350 kA铝电解槽上的应用

在“双碳”以及阶梯电价政策的双重背景下,通过技术升级降低吨铝电耗成为电解铝企业生存和发展的“生命线”。国内某公司350 kA系列铝电解槽采用沈阳铝镁设计研究院有限公司铝电解节能技术进行内衬优化升级,取得了降低铝液直流电耗321 kWh/t-Al的节能效果,全部推广后预期节电约1.12亿度/年,减少CO_(2)排放约6.5万吨/年。

热电发电技术回收工业余热分析

工业余热资源形式多样且总量巨大,节能潜力可观。利用热电发电技术将工业余热资源转化为电能,既能提升能源利用率又可以降低热污染,是实现双碳目标的重要技术途径。介绍了工业中不同类型余热的分布占比情况和热电发电的基本原理,重点对热电发电技术在工业领域中的应用研究进展进行了综述,并针对热电发电技术以及该技术在工业应用中存在的一些问题进行了分析、总结和展望。