Power & Energy Solutions

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Gas Recovery and Recycle 有限公司首席执行官兼英国皇家化学会院士 Rob Grant 博士做客 PES,为我们介绍了他们在氩气回收过程方面取得的最新进展。他们已经取得了巨大的进展,预计还会有更多突破。ArgonØ ¬™ 是环境友好型产品,使用该产品的公司通过回收再利用即可降低成本。难怪生意好! PES:Rob 博士,您好,很高兴能采访您。如您所知,我们已经关注 GR2L 多年,您也是《PES Solar/PV》杂志的老朋友了。首先,能否请您简要介绍一下贵公司的情况? Rob Grant 博士: GR2L 成立于 2008 年。我们与英国剑桥大学合作开发了化学循环燃烧净化技术,并将此技术推向商业应用。 这解决了当前常规气体净化技术未能解决的杂质水平在10-10,000ppm范围内的净化问题,此类问题常见于微电子等行业中。 GR2L 专门针对高价制造行业(如太阳能光伏、微电子和 3D 金属粉末添加剂制造)中使用的惰性吹扫气体进行回收、净化和再利用。如今,GR2L 的经营重点在于光伏产业对硅在结晶形成硅锭的过程(这是硅基太阳能电池制造的第一阶段)中所使用的大量氩气进行回收再利用。 2010 年,GR2L 与位于英国盖特威克附近的英国气体技术集团 (Gas Technologies Group) 建立了合作关系,旨在共同制造 GR2L 的旗舰产品 ArgonØ ¬™ 并将其推向市场。在半导体和医疗市场,英国气体技术集团在高纯度气体装置方面一直处于领先地位,并且正在与 GR2L 合作。 PES:您有多个行业的工作经验,那么太阳能对您有着怎样的重要意义?您认为该产业的市场是在不断扩大还是已经达到了顶峰? RG:目前为止,太阳能是我们最大的市场,也是我们在亚洲的主导业务,未来我们会继续扩展亚洲市场,对我们来说还没有达到顶峰。如今,每台太阳能硅锭生产设备都使用高纯度氩气来吹扫炉膛,以保持所生成硅晶圆的纯度和性能。 目前的行业趋势是摒弃多晶硅,转而使用单晶硅,氩气吹扫气体流量因此增加多达 50%。该趋势连同太阳能光伏市场的持续扩大意味着对高纯度氩气的需求正在增加,而其供应水平基本保持不变。氩气是空气分离的副产物,受到炼钢等其他行业的制约。 市场对高纯度氩气的需求持续增加,推动了氩气回收利用行业的发展,使得硅锭生产商能够降低成本并对成本进行长期控制,在硅锭的生产成本中,氩气成本占 3-5%。 PES:这对您的业务有何影响? RG:目前只有少数硅锭生产商实施氩气回收利用,但该行业的成本降低Argon0 Installation 意味着这一数字只会增加。在安装 1,000 个单晶炉的基础上有一个非常重要的改造机会,同时还需要对新设备进行规划和调试。

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我们很高兴在 PES 与 EKO Instruments China 的中国营销总监 Caris Chan 会面,了解这家业务遍布全球的知名公司的最新发展情况。精确度一直是行业关注重点,而随着中国新法规的实施,这一点变得更加重要。 PES:您好,Caris,非常欢迎您做客 PES China。我们非常希望了解 EKO Instruments 以及您在公司的工作职责。因此,在开始采访前,我们先来简单了解一下 EKO。 Caris Chan:EKO 设计、制造并供应行业领先的太阳能传感器和用于环境研究、可再生能源项目和材料分析的科学仪器。 90 多年来,我们始终专注于可靠性和精确度,如今,我们生产的各类仪器已广泛应用于全球各地;从亚洲各地的太阳能园区到海拔 2367 米的山顶气象站,再到南极的极寒之地均有部署。 EKO Instruments 享誉国际,以高品质和安全可靠著称;我们的核心理念就是不断创新,并坚持不懈地追求产品高精度。 PES:现在请谈谈您的工作背景,您在 EKO 工作了多长时间,以及是什么吸引您加入 EKO? CC:我曾作为材料性能仪器供应商工作多年,并于 4 年前加入 EKO。我主要与从事化学工程和聚合物加工的组织和研究人员合作;特别是涉及橡胶、塑料,以及石油勘探与开采领域的组织和研究人员。

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由香港中文大学(中大)机械与自动化工程学系副教授卢怡君教授领导的研究团队最近为水系锂离子电池研究了一款新型的电解液,它的材料成本低且不易燃、毒性低、相对环保,更重要的是新型电解液应用到电池中能提供稳定的电压作日常使用,朝改善水系锂离子电池的性能迈进了一大步。研究结果已刊登于国际期刊《自然材料》。 锂离子电池的未来:从易燃有机液到安全水系 全球的经济以及人类的日常生活一直依赖着各类型电子设备,例如手机和笔记本电脑等等,而锂离子电池因为能提供相对稳定的能量,而且可以再充电重复使用,成为了这些可充电式电子产品的核心要素。然而,制造锂离子电池的主要材料之一是有机电解液,即使经过多年改良,这些电解液仍然含有毒性及高度易燃,有机会引发严重的安全问题 — 早年三星Note7手机爆炸、锂离子电池在波音公司787新型客机起火等事故就是其中的例子。 科学界近年深入研究以水系电解液取代传统有机电解液,因水的特质可解决易燃问题。然而,水系锂离子电池一直有个弊病,就是其电池电压和能量密度受到水电解限制。当电压高于1.23伏特,电解液中的水分子便会分解为氢气及氧气,大大影响电池运作及电压输出。增加水系电池电压的新兴做法是利用高浓度锂盐(每公斤21至55摩尔)制造人工固体电极介面及减少自由水含量,以改善水的稳定性,然而这个方法引起了对成本和毒性的忧虑。

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单晶硅棒和多晶硅块的等级判定(以下简称“判定”)一直是光伏产业上游供应商最关心的问题之一。由于两种材料的生产工艺不同,它们的判定方法也有差别。 1.单晶硅棒的判定方法 对于单晶硅棒来说,业内的传统判定方法涉及多个步骤:先从硅棒头尾部切下厚晶圆,经热氧和化学腐蚀等处理步骤后,由操作员观察厚晶圆上是否有滑移线。如果有,还需继续向内切片;如果没有,也需要根据经验判断还需切除多少来让剩余部分不含任何黑边、黑环和黑心。这些都直接影响材料的最终电池效率。但是,这个方法检查一片厚晶圆不仅非常耗时,还很依赖操作员的个人经验。 为了缩短判断时间,部分生产商转而使用红外设备来纵向扫描整根硅棒,检测滑移线的位置。每根硅棒最快只需5分钟即可确定含有滑移线的部分。接下来,操作员可根据结果来切除硅棒的废料部分。但是,红外设备无法检测黑边、黑环和黑心等缺陷,因此操作员仍需根据经验向内切割。随之而来的问题是,切多少可以确保完全去除废料,并且不浪费优质部分呢? 近年来快速兴起的光致发光(PL)成像技术给这个问题带来了及时的解决方案。PL是材料吸收光子后的光辐射。 在光伏硅基材料上应用这个原理,带来了PL成像检测技术:使用模拟太阳光照射硅片或电池片,并用专用的PL镜头来获得样本的PL成像。

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VesBox launches solar energy tool to help the world Abstract: the renewable energy solar sector has seen a spike in demand for utility scale and residential solar as corporates and household owners aim to achieve energy security. VesBox has positioned itself as the ideal pre-feasibility tool to enable decision makers measure and analyse their renewable energy solar projects in less than 10 seconds. It is time to work smart and not hard. The world is changing as we know it. The emergence of COVID-19 has drastically changed the way we do business. Renewable energy industries are now adopting to this new norm by implementing better ways of conducting preliminary site assessment without having a physical presence for safety reasons. “Renewable energy solar will be a victor when this pandemic is over. There will be a huge influx in demand for both utility and residential solar energy. We estimate that initial requests for feasibility studies will be conducted via online software platforms with VesBox leading this trend” Dr Kofi Mbuk, Co-founder - VesBox.

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The true cost of broken backsheets in the solar industry Across the solar industry, backsheets can deliver outstanding benefits, both for performance and solar projects’ net present value (NPV) – but only when they work well. In fact, backsheet failure is all too common: in 2020, $260 million CAPEX is expected to be lost due to early backsheet failures. Materials supplier DSM has developed a high-quality solution to mitigate this issue – a polyolefin-core, co-extruded Endurance backsheet that can drive the long-term viability of solar modules. PES meets with Vivek Chaturvedi, new business lead for DSM’s Endurance backsheets, to discuss how this backsheet works and how DSM hopes to further penetrate the market. PES: Welcome back to PES. Could you briefly introduce DSM again and the role it plays in the solar industry? Vivek Chaturvedi: DSM is a global science-based company in health, nutrition, and sustainable living. Our mission is to create brighter lives for all, with a particular focus on addressing the UN’s Sustainable Development Goals (SDGs). In particular, we have more than 50 years’ experience in materials science, over a broad range of industries. DSM Advanced Solar develops material technologies that boost the power generated by solar photovoltaic (PV) systems and

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Damen Shipyards Group has established a firm foothold in the European offshore wind sector over the last decade. Now the Dutch shipbuilding and maritime services company is turning its attention to the emerging market of the American offshore wind industry. Here Damen’s Director Business Development & Market Intelligence, David Stibbe and Area Manager North America, Daan Dijxhoorn, discuss some of the main issues involved in the development of offshore wind in American waters, and the way that Damen is tailoring both its services and portfolio to meet American requirements. The fact that the offshore wind industry has its roots firmly planted in Europe is an undisputed fact. In the league table of installed power generation capacity, the UK, Germany, Denmark and the Netherlands hold the top four positions. The last five years, in particular, have seen a massive increase in installation and commissioning of new wind farms. The most notable trend is one of expansion: offshore wind farms are not only getting larger, they are also being built further out to sea in deeper, rougher waters. On top of that, components are getting bigger. While ten years ago the typical capacity for an offshore wind turbine was around 3MW, today all

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In recent years, manufacturers for wind turbine gearboxes have been challenged with high expectations from OEMs to continuously increase torque density and reduce costs. As rotor sizes have increased, rotational speed has decreased (in view of tip speed limitations related to noise) and design torque for the gearbox has increased proportionally. In view of transport, handling, and assembly limits, gearbox manufacturers are confronted with the need to design higher torque gearboxes in the same design space as previous generations of wind turbines. This explains the growing need for torque density increase, i.e. the ability to transfer higher torque levels through the same outer dimensions. In order to increase the Nm/kg and reduce the €/kNm, ZF Wind Power has assessed several approaches to increase gearbox torque density, which enables the company to develop gearbox solutions for higher torque levels. Measures must be taken on different components to increase overall gearbox loadabililty within the specified outer dimensions. This starts with the gear component loadability, but also includes loadability of the bearings as well as castings and connections. In recent years, ZF Wind Power has managed to increase gearbox torque density from 105 Nm/kg to 175 Nm/kg. Plain bearing technology is an important contributor

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Wirescan has offered the innovative and non-destructive LIRA cable testing technology to the market for some years now. We have been watching the industry and looking at innovation, new technologies and how the cable testing industry can make the transition to the digital age. We came up with Wirescan Digital, a cloud-based cable test database where you can upload and store all your cable test data. This solves many issues related to access and utilization of the data. In this article we will present some thoughts on the industry, and how our new product, the cable tester Wirescan GO!, together with our cloud service, Wirescan Digital, can improve cable operations and maintenance by digitalizing the condition assessment services. The article presents a timeline of cable testing where we will look at common practices and how digitalization is the future for cable condition assessment and monitoring. The Past Cable manufacturers, handlers, owners and operators have been collecting cable condition data from various sources in almost every cable installation project. Cable manufacturers perform regular quality assurance tests throughout the whole production process, and they ensure the quality of the final product with the Factory Acceptance Test (FAT). Cable handlers and installers now take over the

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Hamburg-based trading company, WINDSOURCING.COM, reaches customers in the wind industry worldwide via its online presence. Seher Kaygusuz, their Business Development, Marketing and Sales manager, dropped into PES to update us on what is happening in this expanding company. Business is good and more and more partnerships are forming, which in turn provide customers with valuable training opportunities. In fact they’ve had to move to bigger premises. PES: Hi Seher, it’s great to be talking with you again. We have spoken a lot about WINDSOURCING in the past, but I think a brief overview of the company and the history will be of interest to our new readers. Seher Kaygusuz: Thank you very much for having us. I am very happy to give the readers an overview. We are a specialist dealer for spare parts, accessories and materials for the maintenance and repair of wind turbines. The company was launched in 2011 and was the first online platform of its kind in the world, with a focus on the after-sales market for wind turbines. Our special feature is that the products are mainly distributed and communicated digitally. Customers worldwide have access to the online product catalogue on the multilingual website. Most new customers reach

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