Source-Load Coordinated Optimal Scheduling Considering the High Energy Load of Electrofused Magnesium and Wind Power Uncertainty

In fossil energy pollution is serious and the“double carbon”goal is being promoted,as a symbol of fresh energy in the electrical system,solar and wind power have an increasing installed capacity,only conventional units obviously can not solve the new energy as the main body of the scheduling problem.To enhance the systemscheduling ability,based on the participation of thermal power units,incorporate the high energy-carrying load of electro-melting magnesiuminto the regulation object,and consider the effects on the wind unpredictability of the power.Firstly,the operating characteristics of high energy load and wind power are analyzed,and the principle of the participation of electrofusedmagnesiumhigh energy-carrying loads in the elimination of obstructedwind power is studied.Second,a two-layer optimization model is suggested,with the objective function being the largest amount of wind power consumed and the lowest possible cost of system operation.In the upper model,the high energy-carrying load regulates the blocked wind power,and in the lower model,the second-order cone approximation algorithm is used to solve the optimizationmodelwithwind power uncertainty,so that a two-layer optimizationmodel that takes into account the regulation of the high energy-carrying load of the electrofused magnesium and the uncertainty of the wind power is established.Finally,the model is solved using Gurobi,and the results of the simulation demonstrate that the suggested model may successfully lower wind abandonment,lower system operation costs,increase the accuracy of day-ahead scheduling,and lower the final product error of the thermal electricity unit.

Energy Consumption and Energy Use Characteristics of High-Rise Hotels: A Case Study of Xi'an, Shaanxi

In this paper, 5 high-rise hotels in Xi'an were selected for research, their energy consumption data from 2015 to 2016 were collected and analyzed, their comprehensive energy consumption per unit area was compared by using the standard coal coefficient, and their energy use characteristics and influencing factors were obtained. The test analyzed various parameters of the indoor environment and evaluated the indoor environmental quality according to the specifications and standards. Starting from the perspective of energy use systems, this paper found energy consumption priorities and problems of these hotels, and proposed feasible energy conservation measures, in a view to providing a reference for energy conservation design of high-rise hotels in Xi'an.

Evaluation of Radon Indoor Pollution Risk in High Efficiency Energy Buildings

The target of achieving high energy efficiency standard in order to comply with the EU Directives is leading to remarkable efforts to improve the performance of the building envelope. Excellent thermal insulation and airtight sealing of leakages are of the utmost importance to fulfil the expected targets. Unfortunately, airtightness produces the negative effect of increasing the indoor concentration of air pollutants like radon. Despite the seriousness of the problem is generally misconceived, long-term exposition to radon is acknowledged to be the second cause of lung cancer after smoke. The paper outlines the implications for the building sector and focuses on design and preventive criteria as well as on mitigation and remedial techniques.

Study of High Efficiency Membrane Pilot Test for Membrane Design Optimisation in Order to Reduce the Electrical Consumption

Regarding the studies of other authors about energy performance of a reverse osmosis desalination plant operating with variable pressure; about desalination efficiency in their different recent articles, we continued working in this way researching in a real seawater reverse osmosis plant following the items below. The objectives of this test are to get the minimum electrical consumption and energy costs for the operation of a sea water desalination plant using membranes. We need to compare the performance of the different membranes manufacturer＇s and to determine, under this new thermal scenario, the optimal configuration to get the water quality and quantity needs with the minimum energy consumption.

Industrial Vision of High Efficiency Motors

This paper discusses the prospect of high efficiency motors based on usage in industrial sectors. In fact, energy consumption is globally classified into the industrial sector, transport system, residential and commercial building, agriculture and others sectors. In all the sectors, energy is eventually consumed by electrical appliances and equipments and the industrial sector accounts for the largest share of the overall energy consumption. The study concerns to identify the energy consumption using qualitative method. The main emphasis was given to comparison of the motor with high efficiency motors （HEMs） and traditional standard motors to investigate energy savings. According to the study, industrial sector has up to 25% of electrical energy conservation potential. Almost 70%-75% of the electrical energy consumption in industry is on account of use of electrical motors being used by pumps, fans, compressors and other motor driven system. Therefore, the potential for energy conservation through electric motors is quite high. Using high efficiency motors （HEMs） can thus reduce the losses and hence save vital energy costs. This paper will provide a contribution to electrical motors arena and will be a systematic knowledge base for researchers in this field.

考虑时段划分的高风电渗透率系统储能配置

随着风电渗透率不断升高,其波动性、随机性的特点使得电力系统出现严重的弃风及调峰困难问题。为此,提出一种考虑时段划分的高风电渗透率系统储能优化配置模型。首先,在净负荷的基础上计算峰谷隶属度,综合考虑风电消纳、峰谷差和用户满意度,采用量子粒子群算法寻优;其次,在最优时段的基础上综合考虑火电机组和储能的成本及收益,以净成本最小为目标函数优化出最优储能配置方案;最后,通过不同风电渗透率的算例分析验证所提优化模型的合理性和有效性。

某酒店制冷机房运行策略优化

对华东地区某酒店制冷机房运行策略进行了优化,利用能耗模拟软件对多种运行方案进行了仿真分析。结果表明:原方案仅对冷水泵采用变频控制,制冷机房能效比为4.62;优化方案1采取传统变频方式,对冷水泵、冷却水泵、冷却塔风机采用变频控制,制冷机房能效比达到5.32,与原方案相比提升了15.1%;优化方案2通过对冷水机组、冷水泵、冷却水泵、冷却塔风机进行优化控制,制冷机房能效比为5.48,与原方案相比能效比提升了18.6%,且每年可减少约79 t碳排放量,节能效果显著。

具有紧时、高能耗特征的混合流水车间多目标调度优化问题

针对具有紧时、高能耗工序特征的混合流水车间调度问题,以优化产品暴露时间、最大完工时间和能源消耗为目标,建立混合流水车间调度模型,并提出一种改进的多目标粒子群算法进行有效求解。首先构建了基于ISDE指标的档案维护策略及局部邻域搜索策略,辅助算法跃出局部极值及减少生产阻塞。之后,提出一种基于模糊理论的决策分析方法选取最优调度方案。最后,通过仿真实验验证提出的多目标调度模型与算法的可行性和优越性。

碳排放权交易能提升高能耗企业韧性吗?——基于准自然实验的证据

当前全球经济模糊性、复杂性和不稳定性突出,企业韧性成为评价企业可持续发展能力的新指标,而碳排放权交易政策是我国实现“碳达峰、碳中和”目标的重要抓手。基于中国2009—2022年八大高耗能行业上市企业数据,运用多时点双重差分模型探究碳排放权交易政策对高能耗企业韧性的影响及作用机制。研究发现,碳排放权交易政策有助于提升高能耗企业韧性,主要通过发挥创新效应、信息效应和绿色治理效应提升高能耗企业韧性水平。内部控制水平和政府补助在这一关系中发挥正向调节作用,融资约束发挥抑制作用。异质性分析表明,在非国有、大规模以及高科技企业中,碳排放权交易对高能耗企业韧性的提升作用更显著。因此,研究碳排放权交易政策对高能耗企业韧性这一微观层面的经济后果,对我国实现“碳达峰、碳中和”目标、保持企业持续稳定健康发展具有重要意义。

耗能不花钱的发动机设计

热泵产生的热量是输入电能的COP倍,COP=3-6,利用其能效高的特点,设计了热泵发动机,将热泵的热利用引申到一个新的领域——热泵的机械利用;为了提高热机效率,采用了将热泵串联起来升温的方法,又将热泵热利用引申到另一个新的领域——热泵的高温利用。综合以上两个领域的研究,设计出了一种耗能不花钱的发动机,指出了该发动机带来的三个有益效果:一是不用花钱就能输出能量,二是大力推广就解决了能源危机,三是减少了温室效应,有利于早日实现“双碳”目标。

超高层连体建筑——核心区域立体城市的切片探析

超高层建筑在近20年呈现出不可思议的蓬勃发展之势,也伴生了一定的质疑与讨论。本文从规模效应、中国城镇化现状与低能耗目标出发,探讨了超高层建筑、超高层建筑群的适用范围,并以近期的超高层连体建筑实践为例,分析说明了其在设计过程中面临的重点与难点,以对超高层连体建筑的设计提出一定的建议。

改良MVR蒸发器在煤矿超高矿化度浓水处理中的应用

反渗透工艺是目前处理高矿化度矿井水常用的工艺,该工艺浓缩分质后会产生超高矿化度的氯化钠、硫酸钠浓缩盐水。这种浓缩盐水只能蒸发结晶处理后方可排放,传统的蒸发结晶工艺由于能耗非常高限制了其应用。近来年,相对能耗较低的MVR蒸发结晶工艺在国内外得到较多应用。针对煤矿矿井水浓缩的超高矿化度特点,在MVR工艺的基础上对蒸发器进行改良,增设由高温超导材料制成的原液预热器,进一步提高传热效率。改良制造的MVR蒸发器(150 kg/h)应用于陕西小纪汗煤矿超高矿化度浓水的应用试验中,传热面积由2.80 m^(2)提高至4.89 m^(2),蒸汽消耗量由179.40 kg/h减少到149.85 kg/h,每小时节约30 kg蒸汽,折合标准煤约2.8 kg,节能及碳减排效益显著。

某调度通信楼空调系统节能减碳改造设计实践

重点介绍了某调度通信楼空调系统的节能减碳改造设计,通过综合运用余热回收、可再生能源、固体蓄热、高效制冷机房等多项技术,构建了安全可靠、绿色低碳、高效节能的空调系统。采用HDY-SMAD空调负荷计算及分析软件模拟了建筑物全年的空调能耗,并对优化前后空调系统的运行能耗和碳排放进行了测算。结果显示,优化方案空调系统全年节约电量100万kW·h,全年碳减排573 t,节能减碳效果显著。

德国电力市场能源转型建设及启示

中国正在推进能源结构清洁化转型。如何通过市场建设促进新能源高比例消纳是能源结构调整重点关注的问题。国外电力市场在支撑能源转型方面具有较为丰富的可借鉴经验,以德国电力市场为借鉴对象,对比总结其促进新能源消纳的过程和成效,可为内蒙古电力市场建设提供有益参考。首先分析对比内蒙古自治区与德国在能源供给和消费总量、新能源装机和消纳方面的水平差距;其次介绍德国电价体系和电力市场体系,并通过参考因素的平均绝对误差指标对德国电力市场在适应高比例新能源方面的运行成果进行深度分析;最后总结德国电力市场建设在政策与市场衔接、跨国大市场建设和区域自平衡机制等方面的经验,并提出适应内蒙古电力市场建设的建议。

CO_(2)熔盐捕集与电解单质碳过程调节

CO_(2)熔盐捕集与电解制备单质碳材料由于具有良好的选择性,被认为是一种极有前景的碳捕集利用与封存(CCUS)技术.然而,目前关于CO_(2)在熔盐体系下的动力学捕集机理研究尚显不足,并且电解过程中电耗较高,生产成本偏大,因此CO_(2)高效捕集与低电耗电解是关键.本文计算了CO_(2)熔盐捕集转换碳酸盐热力学和碳酸盐电解理论电压与电耗,通过在线气体质谱仪、碳硫分析仪等研究了典型CaCl_(2)基熔盐中CO_(2)捕集动力学规律.通过恒电压电解、扫描电子显微镜(SEM)、拉曼光谱(Raman)等,在典型三元Na_(2)CO_(3)–K_(2)CO_(3)–Li_(2)CO_(3)熔盐和三元CaCl_(2)–NaCl–CaO熔盐中考察了温度和电压对CO_(2)电解制备单质碳材料电解过程、电耗和产物结构的影响规律.结果表明,相比于碱金属氧化物,CaO是较佳的CO_(2)捕集剂,捕集转化获得的CaCO_(3)具有最低的理论分解电压和电耗;在典型CaCl_(2)–3.0%CaO(质量分数)熔盐中,CO_(2)的捕集容量为0.016 gCO_(2)·g^(−1);相比于Na_(2)CO_(3)–K_(2)CO_(3)–Li_(2)CO_(3)熔盐,CaCl_(2)–NaCl–CaO熔盐捕集CO_(2)具有更低的电解电压和电耗,750℃和1.5 V最佳条件下,电解单质碳材料电流效率达到95.3%,电解电耗最低仅为14.1 kW·h·kg^(−1).本研究不仅为寻找性能优异、价格低廉、环境友好的CO_(2)熔盐捕集材料提供了基础,也为实际电解优化工艺指标提供理论依据.

“双碳”目标下新能源高质量发展路径研究

新能源高质量发展是我国实现“双碳”目标、推进能源革命、构建现代能源产业体系的必由之路,其内涵就是要立足能源安全与“双碳”目标,通过体制机制与技术创新,突破能源“不可能三角”。我国新能源产业经过多年积累发展,新能源装机容量、发电量全球领先,并建立了系统完善的产业链,但未来高质量发展仍面临多方面挑战。通过SWOT分析,我国新能源发展的“优势”主要集中在规模上,而“劣势”主要表现为供应稳定性不足、配套软硬件不完善,“机会”主要来自“双碳”目标下多方因素共同推动新能源发展,“威胁”则主要来自规模日益增长下的自我协调能力不足。我国新能源产业高质量发展应双管齐下,坚持供给侧改革与需求侧响应并进的发展道路。推进风光水火储协同发展,提高负荷侧分布式新能源项目及产业运行质量,在提升负荷侧电力用户需求响应能力的同时,进一步提升发电侧的余电消纳水平。同时要做好顶层设计与动态调整,优化新能源产业布局,持续优化分时电价政策,加大智能化技术研发与应用力度,建设全国统一电力大市场,进一步改革电价形成机制。

高层建筑节能设计问题及优化策略研究

随着城市化进程的加速,高层建筑在城市中的比重逐渐增加。高层建筑所消耗的能源占据了城市总能源消耗的相当大比例,对环境产生了巨大影响。因此,研究高层建筑的节能设计问题,并提出相应的优化策略,对于实现可持续发展目标具有重要意义。旨在探讨高层建筑节能设计的问题,并提出一系列优化策略,以减少能源消耗、提高能源利用效率和改善室内舒适度。

高速铁路委托运输问题分析与对策建议

我国高速铁路一直采用委托运输管理模式,为进一步优化委托运输管理机制,健全管理制度,提升管理水平,从生产布局、运行机制、管理制度3个方面归纳梳理存在的问题及原因,有针对性地提出改进措施。通过优化管理机构,有效解决人力资源浪费问题;通过实施设备维保费用归口收取、大修技改费用包干使用和备品备件维保单位自购自储等运行机制,消除设备维保费用多头收取、“责权利”不统一以及备品备件管理流程繁琐等弊端;通过健全主体工程质量保障、设备安全问责和节能降耗考核等制度,促使委受托双方以及维保单位视设备质量为各方利益的共同体,弥补追责问责不到位和能源浪费等管理缺陷。

浅谈TIE-固定篦床的优化升级

TIE-固定篦床采用中心分区供风、微调风阀、水滴型高效篦板等技术,用水平出风的高速气流快速急冷熟料,不仅系统可获得温度较高且稳定的二次风,还能均布熟料,减少粗细熟料的离析分布,从源头上控制“红河”的产生;在稳定较高的二次风温下,还可将料层厚度总体降低至650mm左右,大幅减小后续所有冷却风机的总体负载阻力,进一步有利于熟料的冷却和降低冷却电耗。实践表明,使用TIE-固定篦床局部替换旧的固定篦床,能有效地提高二次风温,降低烧成系统的能耗,还可显著提高熟料的质量。