小说网,《完美世界》txt全集,天蚕土豆 http://s21345.cn/industries/electronics zh-hans 電子產(chǎn)品保護(hù) http://s21345.cn/areas-of-expertise/protection-of-electronics <span>電子產(chǎn)品保護(hù)</span> <span><span>munters_admin</span></span> <span>2017/08/25</span> Fri, 25 Aug 2017 07:10:02 +0000 munters_admin 988 at http://s21345.cn 空氣溫濕度控制 http://s21345.cn/areas-of-expertise/climate-control <span>空氣溫濕度控制</span> <span><span>munters_admin</span></span> <span>2017/08/25</span> Fri, 25 Aug 2017 06:15:50 +0000 munters_admin 987 at http://s21345.cn 實(shí)驗(yàn)室和無(wú)塵潔凈室濕度控制 http://s21345.cn/areas-of-expertise/rd-labs-and-clean-rooms <span>實(shí)驗(yàn)室和無(wú)塵潔凈室濕度控制</span> <span><span>munters_admin</span></span> <span>2017/08/25</span> Fri, 25 Aug 2017 05:54:08 +0000 munters_admin 981 at http://s21345.cn 腐蝕 http://s21345.cn/we-can-help-you-with/corrosion <span>腐蝕</span> <span><span>munters_admin</span></span> <span>2017/08/20</span> Sun, 20 Aug 2017 13:55:16 +0000 munters_admin 962 at http://s21345.cn HP Elektronikmontage - Dry store for electronics http://s21345.cn/munters/case-studies/hp-elektronikmontage-ap <span>HP Elektronikmontage - Dry store for electronics</span> <span><span>munters_admin</span></span> <span>2017/07/20</span> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"> <div class="Content-primary column medium-8"> <div class="row"> <div class="medium-12 column"> <nav><ul class="Breadcrumb u-cf"><li>您在此</li> <li><a href="http://s21345.cn/munters/case-studies/">Case Studies</a></li> <li>HP Elektronikmontage ApS</li> </ul></nav></div> </div> <div class="Intro-Image u-cf"> <div class="block column medium-12"><img alt="M_Ravn.jpg" src="http://s21345.cn/sites/default/files/globalassets/inriver/resources/m_ravn.jpg" /></div> </div> <div class="row"> <div class="medium-12 column"> <h1>HP Elektronikmontage - Dry store for electronics</h1> <p class="Preamble">Fully controlled dry store of only 5%RH for sensitive electronics</p> </div> </div> <div class="row"> <div class="medium-7 column"> <h2>Drying capacity needed</h2> <p>Production of PCBs often include handling<br /> of Moisture Sensitivity Level (MSL) Class<br /> 3-6 components, which only tolerate the<br /> natural moisture level of the ambient air<br /> for a very limited time.</p> <h2>Munters had the solution</h2> <p>Michael Ravn contacted Munters as he had worked with them in the past and was familiar with Munters' dehumidification solutions<br /> for applications within the electronics industry. Based on HP Elektronikmontage ApS’s requirements, Munters recommended an ML180 desiccant dehumidifier with<br /> a specially designed rotor system to deliver constant relative humidity of 5% RH in a dedicated 12m3 dry storage room.<br /> The dehumidifier operates with a rated air flow of 180 m3/h, and is now placed in an adjacent room, the dry air delivered via a duct system to the dry store where the sensitive electronics<br /> are stored on shelves. The wet exhaust air from the dehumidifier is led to the outside, and the air for reactivation process is taken from the room where the ML180 is placed. The dehumidifier<br /> is controlled using a built-in electronic high-precision humidistat, which measures both relative humidity (% RH) and temperature.<br /> The new dry store is operating to Michael Ravn's full satisfaction:<br /> "This new dry store has provided us with a much better overview of our stored products, and the handling of the components has become so much easier when compared to using the dry cabinet. In addition, the vacuumsealing of components has been<br /> made redundant. The investment has been roughly identical to purchasing yanother dry cabinet, but in return we have achieved a capacity nearly 10 times bigger. Humidity conditions in the dry store are completely stable and fully controlled. Our own data<br /> loggers prove that even after a period of service and cleaning with open door, the relative humidity is reduced from 30%RH to 5%RH in just 20 minutes. We are very impressed with the Munters solution! "</p> </div> <div class="medium-5 column"> <div class="Teaser"> <div class="Teaser-item"> <h3>事實(shí)瀏覽</h3> <ul class="List List--noPadding"><li>Fully controlled and stable humidity of 5% RH</li> <li>Safe storage of MSL class 3-6 components prevents damage</li> <li>High flexibility to adapt to customer needs</li> <li>Increased capacity compared to electrical dry cabinet</li> <li>Simple construction of dry store with small lock</li> </ul></div> </div> <figure class="Image-holder"><img alt="" src="http://s21345.cn/sites/default/files/globalassets/inriver/resources/hp_pcb_web.jpg" /></figure></div> </div> </div> </div> Wed, 19 Jul 2017 16:30:02 +0000 munters_admin 843 at http://s21345.cn Innovative Solutions Supercharge Design of World-Class Battery Research Lab http://s21345.cn/munters/case-studies/air-treatment-dry-room-lab <span>Innovative Solutions Supercharge Design of World-Class Battery Research Lab</span> <span><span>munters_admin</span></span> <span>2017/07/20</span> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"> <div class="Content-primary column medium-8"> <div class="row"> <div class="medium-12 column"> <nav><ul class="Breadcrumb u-cf"><li>您在此</li> <li><a href="http://s21345.cn/munters/case-studies/">Case Studies</a></li> <li>Air Treatment Dry Room Lab</li> </ul></nav></div> </div> <div class="Intro-Image u-cf"> <div class="block column medium-12"><img alt="UnivMI-Process-Equipment_PIM.jpg" src="http://s21345.cn/sites/default/files/globalassets/inriver/resources/univmi-process-equipment_pim.jpg" /></div> </div> <div class="row"> <div class="medium-12 column"> <h1>Innovative Solutions Supercharge Design of World-Class Battery Research Lab</h1> <p class="Preamble">Developing a dry room for an advanced lithium-ion battery production lab is a precise task requiring ultra-low dew point levels. The task becomes monumental when that lab project also required renovating an existing space, isolating it from the rest of an occupied building and placing needed mechanical equipment two floors above. Working together, the teams from Scientific Climate Systems (SCS), Munters and Innovative Air Systems provided the expertise needed to design and develop a world-class lab and ensure consistent and accurate conditions were met. The setting for this complex assignment is the University of Michigan Energy Institute's Battery Lab in Ann Arbor, Mich. The facility offers university researchers, materials scientists and engineers, as well as suppliers and manufacturers, state-of-the-art equipment to develop less expensive and longer lasting energy-storage devices for grid storage, transportation and consumer products. “Our primary focus in the dry room is electrolyte filling and final cell assembly for lithium-ion batteries,” said Greg Less, Ph.D., senior laboratory manager with the University of Michigan Energy Institute. “Having a moisture-free environment is essential for longevity and safety in lithium-ion batteries.” Houston-based SCS, specializes in designing and installing precise low humidity environmental conditions for dry rooms, with more than 200 installations worldwide, was selected to design and build the dry room. The work encompassed a complete integration, mechanical systems, controls for monitoring and dapting to ambient conditions and all the equipment needed to achieve design requirements.</p> </div> </div> <div class="row"> <div class="medium-7 column"> <h2>Lab Design Challenges</h2> <p>Developing the 700-square foot lab presented several unique challenges. For one, the project required converting an existing, second story space in a three-story building into a dry room.<br /><br /> “The building functions as a multi-purpose research and study facility, and the laboratory was to be installed in a space that was used for study work areas,” said David Parkman, senior project engineer with Scientific Climate Systems. “Installing this lab meant totally isolating the area from the surrounding adjacent spaces and hallway.”<br /><br /> Second, the mechanical equipment had to be located on the roof and connected to the second floor of the building without disturbing occupants on the third floor.<br /><br /> In addition, all of the equipment had to be specified to fit on the available roof space and designed to operate with minimal sound and visual impact.<br /><br /> The design of the lab took more than a year with several meetings to review design concepts and details to the installation schedule and coordination with a local contractor to arrange space on the roof and use of an industrial crane to lift the mechanical equipment in place.<br /><br /> Based on the size and activity within the room, design conditions were set at 70°F and ≤ -40°C dew point or ≤ 0.5% relative humidity. Holding these conditions was essential as high energy lithium-ion batteries must be produced in environments with less than one percent relative humidity to prevent hydrolysis of the electrolyte salt.<br /><br /> Lab staff also wanted the benefit of windows in the dry room to correspond with the building windows for natural light. With the separation of mechanical equipment on the roof and the dry room two levels below, the supply air conditions from the dehumidification system must be maintained to provide the drying capacity needed to control the space at 70°F, ≤ -40°C dew point or ≤ 0.5% relative humidity.<br /><br /> “We had to accommodate the needs of the lab but also work around other areas between the mechanical equipment location and the dry room site,” said Parkman. “Therefore, the supply air ductwork needed to be equally vapor tight, as well as the return air.<br /><br /> “We have to hold a lab that’s surrounded by rooms at 75°F and 60% relative humidity at a half of percent relative humidity,” added Parkman. “That differential makes the integrity of that dry room critical, and we had to ensure every seam was precisely sealed.”<br /><br /> Where there were other functional areas within the building, multiple small access hatches were required in the dry room to adjust utilities associated with these rooms and other labs. These had to be gasket sealed along with the room enclosure to maintain conditions.<br /><br /> “Because this space wasn’t ever really meant to be a dry room, let alone a lab, there were several panels needed inside of the room to allow access to control valves and shut off switches for building services that had to be incorporated into the design,” said Less.<br /><br /> SCS utilized its extensive experience to incorporate quality insulated panels and sealed all joints to provide a vapor tight enclosure. In addition, all penetrations for sprinklers, electrical power and compressed air were sealed with the same quality control as the room. Lab staff gain access to the dry room by entering and exiting<br /> through an airlock to prevent moisture infiltration from outside sources.<br /><br /> With proper sealing in place, the dry room requires only 200 CFM of positive pressure to avoid moisture infiltration that would affect conditions inside. To achieve this level of control required a large amount of mechanical equipment, including an advanced dehumidification system, all strategically placed on the building’s rooftop.</p> <h2>Munters Dehumidification System Delivers</h2> <p>The design criteria and expected activity within a dry room determine the equipment performance requirements. For the University of Michigan Battery Lab, the supply air temperature and moisture needed to be lower than the design set point to accommodate three sets of conditions: the internal sensible and latent loads from the number of people working in the space, any exhaust air from workstations, and the heat load from people, processing equipment and lights.<br /><br /> “The Munters Green PowerPurge desiccant system was chosen as the central component of the mechanical system because it’s specifically designed to meet the needs of advanced battery manufacturers requiring low dew point control, while at the same time consuming less energy than other systems,” said Jeff Siemasko, Munters director of sales, North America.<br /><br /> “The Green PowerPurge high performance desiccant system uses the least amount of energy possible, and was precisely developed for the low dew point application required by the lithiumion battery dry room industry,” said Curtis Musall, president of Innovative Air Systems and SCS OEM account manager for Munters.<br /><br /> The Green PowerPurge is energy efficient because the unit acts as an energy recovery system, collecting waste heat off of the hottest section of the desiccant wheel and using it to help with the regeneration. This process reduces the energy required for reactivation, while lowering the discharge temperature of the process air, decreasing energy costs for post cooling the air being delivered to the dry room.<br /><br /> “Green PowerPurge easily can supply dew points at -70°F/-56°C supply air while saving between 25% and 45% of the dry room cooling cost and 35% to 50% of desiccant reactivation energy cost,” said Musall.<br /><br /> The Munters dehumidification system effectively and efficiently controls the dew point and the unit’s refrigeration provides the initial stage of temperature and moisture removal before the final drying through the dehumidifier for the supply air to the dry room.<br /><br /> Results: Lab Conditions Exceeding Expectations According to Less, conditions in the facility have actually exceeded expectations.<br /><br /> “Our humidity is usually lower than the spec by quite a bit,” said Less. “We are easily able to monitor conditions via a digital readout outside the room that also is connected into the University building monitoring system.”<br /><br /> “The support provided by Curtis and the Munters team in confirming the design features and performance was essential to the success of the project,” said Parkman. “Munters has been providing energy-efficient dehumidification systems for this application for nearly 40 years and has been our source for these dry room design specifications.<br /><br /> “Munters quality and performance are consistent with our requirements in designing the facility to control these extreme conditions,” added Parkman. “Where the installation requires total integration, Munters supplied the dehumidification system and Innovative Air Systems provided the refrigeration equipment needed to match the dry room/dehumidification system requirements.”<br /><br /> “Scientific Climate Systems worked with us to make sure we received the exact type of lab that we wanted and made sure we understood all of the parameters,” said Less. “Working together we developed a fantastic, world-class space for our customers to produce batteries.”</p> </div> <div class="medium-5 column"> <div class="Teaser"> <div class="Teaser-item"> <h3>事實(shí)瀏覽</h3> <ul class="List List--noPadding"><li>Complete supply and installation of a dry room</li> <li>Consistent and accurate conditions optimized for battery production</li> <li>Ultra-low dew point of less than 0.5% relative humidity</li> <li>Cutting edge mechanical design including Green PowerPurge? system for increased energy efficiencies</li> </ul></div> </div> <figure class="Image-holder"><img alt="" src="http://s21345.cn/sites/default/files/globalassets/inriver/resources/univmi-with-green-powerpurge_pim.jpg" /></figure><figure class="Image-holder"><img alt="" src="http://s21345.cn/sites/default/files/globalassets/inriver/resources/univmi-dehumidifier_pim.jpg" /></figure></div> </div> </div> </div> Wed, 19 Jul 2017 16:27:27 +0000 munters_admin 834 at http://s21345.cn 為華威大學(xué)的鋰電池材料測(cè)試生產(chǎn)線設(shè)計(jì)實(shí)驗(yàn)室干燥室轉(zhuǎn)輪工業(yè)除濕機(jī) http://s21345.cn/munters/cases/wmg-university-of-warwick <span>為華威大學(xué)的鋰電池材料測(cè)試生產(chǎn)線設(shè)計(jì)實(shí)驗(yàn)室干燥室轉(zhuǎn)輪工業(yè)除濕機(jī)</span> <span><span>munters_admin</span></span> <span>2017/07/19</span> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"> <div class="Content-primary column medium-8"> <div class="row"> <div class="medium-12 column"> <nav><ul class="Breadcrumb u-cf"><li>您在此</li> <li><a href="http://s21345.cn/munters/cases/">inRiverAssociations</a></li> <li>Warwick Manufacturing Group (WMG)'s Innovation Centre</li> </ul></nav></div> </div> <div class="Intro-Image u-cf"> <div class="block column medium-12"><img alt="MDU_WMG_web.jpg" src="http://s21345.cn/sites/default/files/globalassets/inriver/resources/case-studies/mdu_wmg_web.jpg" /></div> </div> <div class="row"> <div class="medium-12 column"> <h1>為華威大學(xué)的鋰電池材料測(cè)試生產(chǎn)線設(shè)計(jì)實(shí)驗(yàn)室干燥室轉(zhuǎn)輪工業(yè)除濕機(jī)</h1> <p class="Preamble">華威大學(xué)能源創(chuàng)新中心設(shè)有一間電池鑒定實(shí)驗(yàn)室并且有電動(dòng)/混合動(dòng)力驅(qū)動(dòng)測(cè)試設(shè)施。中心設(shè)備先進(jìn),裝有一條價(jià)值1300萬(wàn)歐元的電池材料試點(diǎn)生產(chǎn)線,便于進(jìn)行新型電池一站式研發(fā),為汽車、發(fā)電廠、消費(fèi)性電子產(chǎn)品等應(yīng)用情景進(jìn)行詳細(xì)的產(chǎn)業(yè)評(píng)估。</p> </div> </div> <div class="row"> <div class="medium-7 column"> <p>華威大學(xué)能源創(chuàng)新中心設(shè)有一間電池鑒定實(shí)驗(yàn)室并且有電動(dòng)/混合動(dòng)力驅(qū)動(dòng)測(cè)試設(shè)施。中心設(shè)備先進(jìn),裝有一條價(jià)值1300萬(wàn)歐元的電池材料試點(diǎn)生產(chǎn)線,便于進(jìn)行新型電池一站式研發(fā),為汽車、發(fā)電廠、消費(fèi)性電子產(chǎn)品等應(yīng)用情景進(jìn)行詳細(xì)的產(chǎn)業(yè)評(píng)估。</p> <p>華威大學(xué)能源創(chuàng)新中心設(shè)備先進(jìn),裝有一條價(jià)值1300萬(wàn)歐元的電池材料試點(diǎn)生產(chǎn)線,便于進(jìn)行新型電池一站式研發(fā),為汽車、發(fā)電廠、消費(fèi)性電子產(chǎn)品等應(yīng)用情景進(jìn)行詳細(xì)的產(chǎn)業(yè)評(píng)估。</p> <p>蒙特的專業(yè)空氣處理團(tuán)隊(duì)為中心設(shè)計(jì)、制造并安裝了節(jié)能干燥室,內(nèi)置蒙特的高效<a href="http://s21345.cn/munters/products/combined-temperature--humidity-control/mdu">MDU系統(tǒng)</a>,設(shè)計(jì)核心在于其創(chuàng)新的熱回收方案。</p> <p>蒙特的設(shè)備讓露點(diǎn)溫度始終保持 -45℃,為實(shí)驗(yàn)室提供穩(wěn)定環(huán)境,使電解液盡可能保持干燥,這是生產(chǎn)和測(cè)試軟包鋰電池的關(guān)鍵一步,因?yàn)樽⒁簳r(shí)水分子的進(jìn)入會(huì)損害電池性能。</p> <p>蒙特<a href="http://s21345.cn/munters/products/combined-temperature--humidity-control/mdu">MDU系統(tǒng)</a>位于干燥室旁,用于維持環(huán)境條件恒定,另外采用西門子綜合控制系統(tǒng)監(jiān)控水分含量。蒙特MDU2000內(nèi)設(shè)高效節(jié)能方案,空氣處理系統(tǒng)的核心是干燥劑轉(zhuǎn)輪。</p> <p>干燥室是試點(diǎn)生產(chǎn)線的一部分,9m x 5m的空間可容納六名工作人員,相對(duì)濕度低于1%,露點(diǎn)溫度保持-45℃。</p> <p>干燥室內(nèi)備有制造軟包電池所需的所有設(shè)備。電池材料的濕敏特性可能在以下步驟帶來(lái)潛在問(wèn)題:<br /> -- 電極烘干與剪切<br /> -- 電池組組裝<br /> -- 包裝<br /> -- 注液</p> <p>蒙特<a href="http://s21345.cn/munters/products/combined-temperature--humidity-control/mdu">MDU系統(tǒng)</a>位于干燥室旁,用于維持環(huán)境條件恒定,另外采用西門子綜合控制系統(tǒng)監(jiān)控水分含量。蒙特MDU2000內(nèi)設(shè)高效節(jié)能方案,空氣處理系統(tǒng)的核心是干燥劑轉(zhuǎn)輪工業(yè)除濕機(jī)。</p> <h2>電池</h2> <h2>干燥室</h2> <h2>轉(zhuǎn)輪工業(yè)除濕機(jī)</h2> </div> <div class="medium-5 column"> <div class="Teaser"> <div class="Teaser-item"> <h3>事實(shí)瀏覽</h3> <ul class="List List--noPadding"><li>精準(zhǔn)調(diào)節(jié)并維持穩(wěn)定環(huán)境條件</li> <li>提供干燥室建設(shè)交鑰匙工程</li> <li>-45℃的超低露點(diǎn)溫度</li> <li>先進(jìn)設(shè)計(jì)</li> <li>MDU2000工業(yè)除濕機(jī)</li> <li>精準(zhǔn)監(jiān)測(cè)與控制,操作簡(jiǎn)便友好</li> <li>節(jié)能</li> </ul></div> </div> <figure class="Image-holder"><img alt="" src="http://s21345.cn/sites/default/files/globalassets/inriver/resources/case-studies/wmg---paul-blackmore.jpg" /></figure><figure class="Image-holder"><img alt="" src="http://s21345.cn/sites/default/files/globalassets/inriver/resources/inriverassociations/dry-room-for-lithium-battery-process.jpg" /></figure></div> </div> </div> </div> Wed, 19 Jul 2017 15:37:55 +0000 munters_admin 720 at http://s21345.cn GREENDRY系列獨(dú)立式工業(yè)轉(zhuǎn)輪除濕機(jī)組 http://s21345.cn/munters/products/dehumidifiers/greendry-series <span>GREENDRY系列獨(dú)立式工業(yè)轉(zhuǎn)輪除濕機(jī)組</span> <span><span>munters_admin</span></span> <span>2017/07/02</span> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"> <div class="Content-primary column medium-8"> <div class="row"> <div class="column medium-4 Gallery-view"> <div class="Gallery"> <div class="Gallery-panel Gallery-view" id="toggleView"><img alt="GreenDry系列獨(dú)立式工業(yè)轉(zhuǎn)輪除濕機(jī)組" data-entity-type="file" data-entity-uuid="d5420448-6502-4065-b1c2-fbff32a5c5e8" src="http://s21345.cn/sites/default/files/inline-images/greendry.jpg" /></div> </div> <div id="video-view">?</div> <div class="availability Gallery-view"> <h3>銷售地區(qū)</h3> <p>中國(guó),亞太</p> </div> </div> <div class="column medium-8"> <h3 class="Headline Headline--light">除濕機(jī) / 單體除濕機(jī)</h3> <h1>GREENDRY系列獨(dú)立式工業(yè)轉(zhuǎn)輪除濕機(jī)組</h1> <div class="ProductPicker u-hidePrint"> <h3 class="Headline Headline--light ProductPicker-heading">GREENDRY系列轉(zhuǎn)輪除濕機(jī)</h3> </div> <p>GREENDRY系列獨(dú)立式工業(yè)轉(zhuǎn)輪除濕機(jī)組能精準(zhǔn)控制環(huán)境濕度,從而降低企業(yè)總體運(yùn)營(yíng)成本、提高生產(chǎn)效率并改善工作環(huán)境舒適度,廣泛適用于食品、醫(yī)藥和電子等對(duì)空氣濕度高度敏感的行業(yè)。</p> <p><strong>蒙特轉(zhuǎn)輪除濕機(jī)組的顯著優(yōu)勢(shì)</strong></p> <ul class="List List--Highlight"><li>高效節(jié)能的轉(zhuǎn)輪除濕機(jī)組</li> <li>無(wú)框架結(jié)構(gòu),完全密封的整體發(fā)泡設(shè)計(jì)</li> <li>操作簡(jiǎn)單便捷、設(shè)備運(yùn)行狀況實(shí)時(shí)可控</li> <li>易于維保的平開門設(shè)計(jì)</li> <li>更大的檢修空間設(shè)計(jì)</li> <li>降低轉(zhuǎn)輪除濕機(jī)組的能耗和運(yùn)營(yíng)成本</li> <li>超低的維修成本和維護(hù)頻率</li> <li>防止霉變、腐蝕造成的除濕設(shè)備故障或產(chǎn)品損失</li> </ul><p><b>工作原理</b></p> <p>? ? ?● 除濕機(jī)利用干燥劑吸附空氣中的水蒸氣,對(duì)潮濕空氣進(jìn)行除濕<br /> ? ? ?● 蒙特除濕機(jī)組的核心技術(shù)為蒙特自研產(chǎn)品——載有干燥劑并持續(xù)轉(zhuǎn)動(dòng)的轉(zhuǎn)輪<br /> ? ? ?● 360°的轉(zhuǎn)輪分為兩個(gè)區(qū)域,其中270°區(qū)域?yàn)樘幚韰^(qū)域,90°區(qū)域?yàn)樵偕鷧^(qū)域<br /> ? ? ?● 潮濕空氣通過(guò)轉(zhuǎn)輪的處理區(qū)域時(shí),濕空氣中的水蒸氣被轉(zhuǎn)輪材料上的干燥劑吸附<br /> ? ? ?● 轉(zhuǎn)輪轉(zhuǎn)到再生區(qū)域時(shí),高溫再生空氣通過(guò)轉(zhuǎn)輪,干燥劑上的水分被脫附<br /> ? ? ?● 轉(zhuǎn)輪上的干燥劑被再生,轉(zhuǎn)輪重新獲得吸收水蒸氣的能力<br /> ? ? ?● 轉(zhuǎn)輪持續(xù)低速運(yùn)行,除濕和再生是不間斷的過(guò)程,為用戶持續(xù)不斷提供干空氣<br /> ? ? ?● 專用超低露點(diǎn)節(jié)能選項(xiàng),全球研發(fā)平臺(tái)保駕護(hù)航,蒙特轉(zhuǎn)輪除濕機(jī)組的更高節(jié)能可達(dá)40%</p> <p><strong>轉(zhuǎn)輪除濕機(jī)GREENDRY產(chǎn)品特點(diǎn)</strong></p> <p>? ? ● 1950年代,瑞典發(fā)明家卡爾·蒙特先生發(fā)明轉(zhuǎn)輪除濕技術(shù),并創(chuàng)建蒙特公司<br /> ? ? ● 自工業(yè)轉(zhuǎn)輪除濕技術(shù)誕生以來(lái),蒙特公司不斷改進(jìn)生產(chǎn)工藝和方法,使得蒙特除濕轉(zhuǎn)輪始終立于行業(yè)專業(yè)地位,成為除濕行業(yè)爭(zhēng)相效仿的典范<br /> ? ? ● 吸濕因子——硅膠是一種無(wú)毒、無(wú)味、化學(xué)性質(zhì)極其穩(wěn)定的惰性物質(zhì),具有極強(qiáng)的吸濕性<br /> ? ? ● 嚴(yán)格的第三方測(cè)試認(rèn)證——證明蒙特除濕轉(zhuǎn)輪具有殺菌效果,并且無(wú)任何揮發(fā)物質(zhì)<br /> ? ? ● 卓越的處理工藝,確保相對(duì)濕度達(dá)到100%的情況下,硅膠仍然不會(huì)流失<br /> ? ? ● 耐腐蝕性——耐弱酸性物質(zhì)、含硫物質(zhì)等化學(xué)制品的腐蝕<br /> ? ? ● 蒙特公司已為全球高品質(zhì)產(chǎn)品生產(chǎn)線和環(huán)境提供30多萬(wàn)套除濕機(jī),為各行業(yè)高品質(zhì)產(chǎn)品和高品質(zhì)生活提供了更理想的空氣環(huán)境</p> <p><strong>機(jī)械結(jié)構(gòu)—堅(jiān)固穩(wěn)定,易于清潔</strong></p> <p>GREENDRY系列轉(zhuǎn)輪除濕機(jī)組采用的是蒙特公司自研的無(wú)框架空調(diào)箱體,提高了機(jī)組的除濕性能和耐用性<br /> ? ? ● 徹底消除冷橋現(xiàn)象,無(wú)傳統(tǒng)空調(diào)箱體的鋁合金框架結(jié)構(gòu),徹底消除轉(zhuǎn)輪除濕機(jī)組表面結(jié)露<br /> ? ? ● 高保溫性,除濕機(jī)組內(nèi)外面板之間充注厚度達(dá)60mm的聚氨酯發(fā)泡,提高箱體的高保溫性能,減小能量損失,其中內(nèi)面板可選不銹鋼<br /> ? ? ● 高密封性,轉(zhuǎn)輪再生和處理側(cè)的密封設(shè)計(jì),在減小轉(zhuǎn)輪阻力的同時(shí)使兩側(cè)達(dá)到高效密封<br /> ? ? ● 易清潔,箱體內(nèi)表面過(guò)渡和轉(zhuǎn)角處連接順暢,除濕機(jī)組內(nèi)表面光滑平整,便于維護(hù)保養(yǎng)<br /> ? ? ● 低漏風(fēng)率,檢修門采用鉸鏈結(jié)構(gòu),門把手采用無(wú)冷橋結(jié)構(gòu)設(shè)計(jì),門框采用高彈性橡膠密封,充分提高除濕機(jī)組隔熱性能并降低漏風(fēng)率</p> <p><strong>電氣控制—靈活管理,智能監(jiān)測(cè)</strong></p> <p>GREENDRY系列轉(zhuǎn)輪除濕機(jī)組均采用靈活便捷的西門子智能邏輯控制器,可實(shí)現(xiàn)對(duì)運(yùn)行工況的實(shí)時(shí)檢測(cè)和控制。同時(shí)通過(guò)LCD顯示屏可一目了然地監(jiān)測(cè)各項(xiàng)參數(shù)<br /> ● 機(jī)組當(dāng)前運(yùn)行狀態(tài)<br /> ● 再生溫度<br /> ● 處理風(fēng)/送風(fēng)溫濕度(選配)<br /> ● 多級(jí)電再生的運(yùn)行狀態(tài)<br /> ● 運(yùn)行計(jì)時(shí)器<br /> ● 其它預(yù)留接口,可以擴(kuò)展功能清晰的全中文報(bào)警信息提示,使機(jī)組更容易維護(hù)和排除故障<br /> ● 再生加熱溫度過(guò)熱報(bào)警<br /> ● 轉(zhuǎn)輪堵塞或停轉(zhuǎn)報(bào)警(選配)<br /> ● 處理風(fēng)/再生風(fēng)過(guò)濾器堵塞(選配)<br /> ● 處理風(fēng)機(jī)/再生風(fēng)機(jī)過(guò)載故障<br /> ● 再生風(fēng)溫度傳感器故障<br /> ● 其它可擴(kuò)展的報(bào)警功能</p> <p><strong>配置靈活——量身定制 提供全面解決方案</strong></p> </div> </div> <div class="row"> <div class="column small-12"> <hr /></div> </div> <div class="row"> <div class="medium-12 column"> <h2 id="type">工業(yè)除濕機(jī)設(shè)備分類</h2> <ul><li>空氣處理設(shè)備 -> 空氣除濕機(jī) / 空氣除濕器 / 空氣除濕系統(tǒng) -> 工業(yè)除濕機(jī) / 工業(yè)除濕器</li> <li>環(huán)控系統(tǒng) -> 氣候環(huán)境溫濕度控制器 / 氣候環(huán)境溫濕度控制儀 / 氣候環(huán)境溫濕度控制系統(tǒng)</li> <li>空氣處理設(shè)備 -> 全空氣處理機(jī)組 / 全空氣處理器 / 全空氣空調(diào)系統(tǒng) / 全空氣空調(diào)機(jī)組 / 全空氣系統(tǒng)</li> <li>空氣處理設(shè)備 -> 空氣干燥機(jī) / 空氣干燥器 -> 工業(yè)干燥機(jī)</li> </ul></div> </div> <div class="row"> <div class="medium-12 column"> <h2 id="alias">工業(yè)除濕機(jī)設(shè)備別稱</h2> GreenDry系列獨(dú)立式工業(yè)轉(zhuǎn)輪除濕機(jī)組,GreenDry高效節(jié)能獨(dú)立式空氣轉(zhuǎn)輪除濕干燥機(jī)組,GREENDRY系列轉(zhuǎn)輪除濕機(jī),GreenDry?系列轉(zhuǎn)輪除濕機(jī),GreenDry高效節(jié)能獨(dú)立式工業(yè)除濕機(jī),GreenDry?系列空氣轉(zhuǎn)輪除濕機(jī)</div> </div> <div class="row"> <div class="medium-12 column"> <ul class="List List--teaserGrid u-cf u-noHeight"></ul></div> </div> </div> <p>?</p> <h3 style="font-size: 18px">相關(guān)文檔下載</h3> <ul style="list-style: none"><li><a class="pull-left" href="http://s21345.cn/sites/default/files/2022-05/蒙特產(chǎn)品樣本%20-%20GREENDRY系列除濕系統(tǒng)%20-%20Copy.pdf">產(chǎn)品手冊(cè)-GREENDRY系列轉(zhuǎn)輪除濕機(jī)組</a></li> </ul></div> Sat, 01 Jul 2017 21:07:47 +0000 munters_admin 111 at http://s21345.cn VOCs沸石濃縮轉(zhuǎn)輪系統(tǒng) http://s21345.cn/munters/products/pollution--voc-control/basic-unit-bu <span>VOCs沸石濃縮轉(zhuǎn)輪系統(tǒng)</span> <span><span>munters_admin</span></span> <span>2017/07/02</span> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"> <div class="Content-primary column medium-8"> <div class="row"> <div class="medium-12 column"> <nav><ul class="Breadcrumb u-cf"><li>您在此</li> <li><a href="http://s21345.cn/munters/products/">產(chǎn)品</a></li> <li><a href="http://s21345.cn/munters/products/pollution--voc-control/">污染和揮發(fā)性有機(jī)化合物(VOC)控制</a></li> <li>Basic Unit (BU)</li> </ul></nav></div> </div> <div class="row"> <div class="column medium-4 Gallery-view"> <div class="Gallery"> <div class="Gallery-panel Gallery-view" id="toggleView"><img alt="VOCs沸石濃縮轉(zhuǎn)輪系統(tǒng)基本風(fēng)機(jī)單元" class="Gallery-image" src="http://s21345.cn/sites/default/files/Temp/at_series_bu-amer-202672559.png" /></div> </div> <div id="video-view">?</div> </div> <div class="column medium-8"> <h3 class="Headline Headline--light">污染和揮發(fā)性有機(jī)化合物(VOC)控制 / ZEOL</h3> <h1>VOCs沸石濃縮轉(zhuǎn)輪系統(tǒng)</h1> <div class="medium-12"> <ul class="List List--horizontal List--withIcons"></ul></div> <div class="ProductPicker u-hidePrint"> <h3 class="Headline Headline--light ProductPicker-heading">Basic Unit (BU)</h3> </div> <p class="p" style="margin-bottom:6.0000pt"><span style="background:#ffffff"><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">蒙特</font><font face="宋體">ZEOL沸石轉(zhuǎn)輪系統(tǒng)采用了蒙特HoneyCombe</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">技術(shù),由蒙特?fù)碛械姆惺捌?lt;/font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">它無(wú)</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">機(jī)材料合成的波紋狀礦物纖維基材制成,具有物理完整性、硬度及足夠的柔韌性,能承受很高的熱應(yīng)力。此外,采用</font></span><span style="font-family:宋體"><font face="宋體">HoneyCombe</font></span><span style="font-family:宋體"><font face="宋體">技術(shù)的蒙特</font><font face="宋體">ZEOL沸石轉(zhuǎn)輪能承受高達(dá)593.33</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">℃</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">的高溫,不會(huì)和強(qiáng)酸等腐蝕性物質(zhì)發(fā)生化學(xué)反應(yīng),也不會(huì)被高沸點(diǎn)溶劑、顆粒物或樹脂材料等堵塞。經(jīng)過(guò)轉(zhuǎn)輪蜂窩的空氣流均勻、低速,并且壓降很低(低于</font><font face="宋體">250Pa)。該系統(tǒng)只有少量運(yùn)動(dòng)部件,也沒(méi)有吸附劑磨損,可以長(zhǎng)時(shí)間連續(xù)運(yùn)作,保證產(chǎn)出穩(wěn)定。轉(zhuǎn)輪配有的密封圈摩擦系數(shù)很小,可以避免泄露。</font></span></span></span></p> <p class="p" style="margin-bottom:6.0000pt"><span style="background:#ffffff"><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">對(duì)于現(xiàn)有的活性炭或沸石濃縮轉(zhuǎn)輪系統(tǒng),蒙特可以為其更換定制的蒙特沸石轉(zhuǎn)輪。</font></span></span></span></p> <ul class="List List--Highlight"><li>低壓降</li> <li>多種尺寸可以適用不同處理流量</li> </ul></div> </div> <div class="row"> <div class="column small-12"> <hr /></div> </div> <div class="row"> <div class="medium-12 column"> <p class="p" style="margin-bottom:6.0000pt">?</p> <h2 id="type">行業(yè)應(yīng)用示例</h2> <p>?</p> <p class="p" style="margin-bottom:6.0000pt"><span style="background:#ffffff"><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">安裝蒙特沸石轉(zhuǎn)輪及熱氧化燃燒系統(tǒng)之后,飛機(jī)制造商可實(shí)現(xiàn):</font></span></span></span></p> <p class="p" style="margin-bottom:6.0000pt"><span style="background:#ffffff"><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">? 1,高效地搜集和去除有機(jī)溶劑</font></span></span></span></p> <p class="p" style="margin-bottom:6.0000pt"><span style="background:#ffffff"><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">? 2,VOCs去除率高達(dá)95%以上</font></span></span></span></p> <p class="p" style="margin-bottom:6.0000pt"><span style="background:#ffffff"><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">? 3,實(shí)現(xiàn)高可靠性,穩(wěn)定的排放</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">,</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">系統(tǒng)壓力波動(dòng)</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">很</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">小</font></span></span></span></p> <p class="p" style="margin-bottom:6.0000pt"><span style="background:#ffffff"><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">? 4,大幅降低運(yùn)營(yíng)成本</font></span></span></span></p> <h1 class="p" style="margin-bottom: 6pt;"><span style="background:#ffffff"><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">為什么會(huì)選中蒙特?</font></span></span></span></h1> <p class="p" style="margin-bottom:6.0000pt"><span style="background:#ffffff"><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">為符合當(dāng)?shù)丨h(huán)保法規(guī),噴涂線排放的廢氣需要經(jīng)過(guò)特殊處理,以去除揮發(fā)性有機(jī)混合物(</font><font face="宋體">VOCs)。然而,在飛機(jī)噴涂線揮發(fā)出的大量空氣中,VOCs的濃度很低。</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">某</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">飛機(jī)制造商提出的設(shè)備選型標(biāo)準(zhǔn)包括:</font><font face="宋體">VOCs減排方案必須效率高,投資和運(yùn)營(yíng)成本低,質(zhì)量可靠并且應(yīng)用經(jīng)驗(yàn)豐富。</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">而</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">蒙特沸石濃縮轉(zhuǎn)輪系統(tǒng)能滿足</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">他們</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">苛刻</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">的</font></span></span><span style="font-size:12.0000pt"><span style="font-family:宋體"><font face="宋體">要求。</font></span></span></span></p> <h2>?</h2> <h2 id="type">空氣凈化設(shè)備分類</h2> <ul><li>環(huán)境控制 -> 空氣凈化系統(tǒng) / 揮發(fā)性有機(jī)化合物控制 / 空氣污染控制 / VOC控制 / 污染治理系統(tǒng) -> 空氣污染凈化器 / 空氣濾清器 / 廢氣超低排放凈化器 / 揮發(fā)性有機(jī)化合物污染治理系統(tǒng) / VOCs污染治理系統(tǒng) / 氨氣排放限制控制器</li> <li>環(huán)境控制 -> 轉(zhuǎn)輪系統(tǒng) / 加熱器 / 熱氧化爐 / 沸石轉(zhuǎn)輪 / VOCs轉(zhuǎn)輪 / 焚燒爐 / ZEOL濾料 / 沸石濾料 / 轉(zhuǎn)輪濃縮機(jī) -> 沸石濃縮轉(zhuǎn)輪系統(tǒng) / 廢氣排放處理沸石轉(zhuǎn)輪 / VOCs處理沸石轉(zhuǎn)輪 / 大風(fēng)量沸石轉(zhuǎn)輪系統(tǒng) / 燃?xì)馐郊訜崞?/ 蓄熱式焚燒爐</li> </ul></div> </div> <div class="row"> <div class="medium-12 column"> <h2 id="alias">空氣凈化設(shè)備別稱</h2> VOCs沸石濃縮轉(zhuǎn)輪系統(tǒng)基本風(fēng)機(jī)單元,多尺寸多風(fēng)量沸石濃縮轉(zhuǎn)輪系統(tǒng)基本風(fēng)機(jī)單元,VOCs廢氣治理沸石吸附濃縮轉(zhuǎn)輪,多風(fēng)量沸石轉(zhuǎn)輪濃縮系統(tǒng)</div> </div> <p>?</p> <div class="row"> <div class="medium-12 column"> <ul class="List List--teaserGrid u-cf u-noHeight"></ul></div> </div> </div> </div> Sat, 01 Jul 2017 20:53:33 +0000 munters_admin 53 at http://s21345.cn GLASdek系列蒸發(fā)冷卻介質(zhì) http://s21345.cn/munters/products/coolers--humidifiers/glasdek <span>GLASdek系列蒸發(fā)冷卻介質(zhì)</span> <span><span>munters_admin</span></span> <span>2017/07/02</span> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"> <div class="Content-primary column medium-8"> <div class="row"> <div class="medium-12 column"> <nav><ul class="Breadcrumb u-cf"><li>您在此</li> <li><a href="http://s21345.cn/munters/products/">產(chǎn)品</a></li> <li><a href="http://s21345.cn/munters/products/coolers--humidifiers/">冷風(fēng)機(jī)和加濕器</a></li> <li>GLASdek<sup>?</sup></li> </ul></nav></div> </div> <div class="row"> <div class="column medium-4 Gallery-view"> <div class="Gallery"> <div class="Gallery-panel Gallery-view" id="toggleView"><img alt="GLASdek系列蒸發(fā)冷卻介質(zhì)" height="180" src="http://s21345.cn/sites/default/files/Temp/at_series_glasdek1722861650.png" width="100" /></div> <ul class="Gallery-thumbnails u-cf"><li><span class="Gallery-thumbnail"><img alt="GLASdek系列蒸發(fā)冷卻介質(zhì)" src="http://s21345.cn/sites/default/files/Temp/at_series_glasdek1722861650.png" /></span></li> <li><span class="Gallery-thumbnail"><img alt="GLASdek系列蒸發(fā)冷卻介質(zhì)" src="http://s21345.cn/sites/default/files/Temp/at_product_gx40-1938510392.png" /></span></li> </ul></div> <div id="video-view">?</div> </div> <div class="column medium-8"> <h3 class="Headline Headline--light">冷風(fēng)機(jī)和加濕器 / 濕簾</h3> <h1>GLASdek系列蒸發(fā)冷卻介質(zhì)</h1> <div class="medium-12"> <ul class="List List--horizontal List--withIcons"></ul></div> <div class="ProductPicker u-hidePrint"> <h3 class="Headline Headline--light ProductPicker-heading">GLASdek<sup>?</sup></h3> <select data-module="input-redirect"><option>選擇產(chǎn)品型號(hào)</option><option value="/munters/products/coolers--humidifiers/gx40/">GX40 evaporative media</option></select></div> <p>一款為滿足更高要求而研發(fā)的蒸發(fā)介質(zhì),尤其是有更高的防火要求的應(yīng)用。</p> <p>GLASdek<sup>?</sup>由無(wú)機(jī)、不燃材料制成??芍苯邮褂米詠?lái)水,無(wú)需進(jìn)行水處理(即脫礦植物)。在水質(zhì)條件不好的情況下,可能需要進(jìn)行水處理,但不需要使用銀電離過(guò)濾器。殘留在蒸發(fā)介質(zhì)中的礦物質(zhì)和污染物隨著排出的水沖洗掉,使整個(gè)蒸發(fā)加濕過(guò)程保持純凈。</p> <p>GLASdek專為對(duì)防火等級(jí)有要求的應(yīng)用而開發(fā)。提供GLASdek,可封裝在不銹鋼框架內(nèi)。</p> <h4>顯著優(yōu)勢(shì)</h4> <ul class="List List--Highlight"><li>陶土無(wú)機(jī)材料</li> <li>不易燃</li> <li>低壓降</li> <li>符合VDI6022標(biāo)準(zhǔn)</li> <li>無(wú)需水處理</li> <li>安全衛(wèi)生</li> <li>GREENGUARD GOLD認(rèn)證*</li> </ul><p>?</p> </div> </div> <div class="row"> <div class="column small-12"> <hr /></div> </div> <div class="row"> <div class="medium-12 column"> <h2 id="type">冷風(fēng)機(jī)和加濕器設(shè)備分類</h2> <ul><li>空氣處理設(shè)備 -> 冷風(fēng)機(jī) / 加濕器 / 風(fēng)機(jī) / 加濕機(jī) -> 冷風(fēng)機(jī)濕簾 / 風(fēng)機(jī)水簾 -> 降溫水簾 / 濕簾加濕器</li> <li>空氣處理設(shè)備 -> 商用溫控系統(tǒng) / 商用加濕系統(tǒng) / 商用空氣制冷系統(tǒng) -> 蒸發(fā)冷卻機(jī)組</li> <li>空氣處理設(shè)備 -> 制冷系統(tǒng) / 制冷機(jī)組 / 冷卻空調(diào)系統(tǒng) -> 直接蒸發(fā)式制冷機(jī)組 / 蒸發(fā)冷卻空調(diào)系統(tǒng)</li> <li>空氣處理設(shè)備 -> 制冷系統(tǒng) / 制冷機(jī)組 -> 機(jī)房制冷系統(tǒng) / 數(shù)據(jù)中心制冷機(jī)組</li> <li>空氣處理設(shè)備 -> 水槽 -> 加濕制冷水槽 / 蒸發(fā)式濕簾配水槽</li> <li>空氣處理設(shè)備 -> 其它 -> 加濕器 / 冷風(fēng)機(jī) -> 噴霧加濕器 / 霧化加濕器 / 蒸發(fā)式冷風(fēng)機(jī) / 空氣制冷器 / 蒸發(fā)加濕器 / 空調(diào)系統(tǒng) -> 高壓噴霧器 / 霧化加濕器 / 蒸發(fā)式預(yù)冷機(jī) / 燃?xì)廨啓C(jī)蒸發(fā)冷卻器</li> </ul></div> </div> <div class="row"> <div class="medium-12 column"> <h2 id="alias">冷風(fēng)機(jī)和加濕器設(shè)備別稱</h2> GLASdek系列蒸發(fā)冷卻介質(zhì),GLASdek系列建筑物室內(nèi)高效蒸發(fā)式冷卻介質(zhì),Glasdek系列玻璃纖維濕膜加濕器,CELdek系列 GLASdek<sup>?</sup> 商用空氣制冷系統(tǒng)</div> </div> <div class="row"> <div class="medium-12 column"> <h2>降溫水簾設(shè)備型號(hào)</h2> <ul class="List List--teaserGrid u-cf u-noHeight"><li class="column medium-6"> <div class="row"> <div class="column medium-4"><a class="u-stateUnderline" href="http://s21345.cn/munters/products/coolers--humidifiers/gx40/"><img alt="GLASdek GX40蒸發(fā)冷卻介質(zhì)" src="http://s21345.cn/sites/default/files/Temp/at_product_gx40-788094637.png" /></a></div> <div class="column medium-8"> <h3 class="u-stateUnderline-item"><a class="u-stateUnderline" href="http://s21345.cn/munters/products/coolers--humidifiers/gx40/">GLASdek GX40蒸發(fā)冷卻介質(zhì)</a></h3> <p>?</p> </div> </div> </li> </ul></div> </div> </div> </div> Sat, 01 Jul 2017 20:47:14 +0000 munters_admin 22 at http://s21345.cn