机房内照明及与总耗电之比：5.5MW，0.49％；
参考北京地区的平时电价（0.821元/度）计，年总电费：79.93亿元。
UPS的整机效率对于其耗电也有重大影响，例如：
当η＝0.963时，UPS系统耗电30.79MW；
当η＝0.976时，UPS系统耗电19.70MW；
效率提高后节电30.79－19.70=11.09MW，每年11090×24×365＝97,148,400度电；每年节约电费0.821×97,148,400≈79,758,836元≈0.8亿元！
2）直流UPS系统供电方式（直流UPS效率93％，输出48V）
数据中心总耗电：1185.43MW，电能利用效力（PUE）：1.48，总耗电/建筑使用面积：2.37KW/M2，发电机组容量：1179MW。其中
LONG蓄电池LGK75-12N 系列说明及简介销售
广隆LONG蓄电池公司自1990年创立以来已20年，是国内取得保税工厂及股票上市之铅酸蓄电池製造厂。近五年以来每年电池出货数达30%的複成长;创造高达40亿元的营业收入。为求分散生产风险与扩大销售市场，採取国际分工的产销政策，早在1996年即于越南国之滨沥县设厂，为早于当地建立电池生产基地之投资之外资企业。后于1999年与2000年分别完成ISO9001与ISO14001认证，2002年通过OHSAS18001认证，并于同年于台湾挂牌上市。至2007年又完成佔地达20万平方公尺之越南德和厂兴建，2008年通过TL9000通信/通讯电子业品质系统验证，并于2009年底起至2010年持续进行德和厂生产基地第二第三期的扩建工程。
于产品的製造，广隆除了对各生产环节严格的把关外，从技术体系到管理方法与业务流程都有著革命性的创新与实践。我们的产品在製造及确保产品遵循依品质管理系统下，全系列密闭式电池产品皆通过UL安规标准。另针对欧洲区安控市场的高品质需求，我们亦通过了德国VdS的认证。产品品质深受国内外之跨国企业的厚爱与认可。我们相信，客户满意度不仅只来自于产品本身，即时的服务提供与客户的友好关系建立更能提升客户满意的附加价值。广隆不仅获颁客户满意度金质奖外，产品亦荣获经济部评选为『台湾精品奖』的肯定。
我们的创新发展来自丰硕经验与能量，广隆拥有产品线广度完整及弹性製造技术的竞争优势，迄今已开发出超过400种不同用途之电池，并持续开发电动车，太阳能及风力等再生能源用电池。对于产品创新发展无穷尽的追求与态度，广隆自1993年起陆续与工研院材料所合作深度放电用密闭式电池、电动机车用电池及高功率改质电池等之开发，并多方引入新技术，更投资了许多先进的设备来彰显我们对客户与时俱进；永续发展的信念与承诺。
立足台湾，深耕越南，放眼环宇。广隆，以能为全球消费者提供更洁淨能源，并担负社会与环境的责任与维护的决心，进而带动公司持续成长与永续经营，兢兢业业努力不懈。
Guanglong long battery Co., Ltd. has been established for 20years since 1990. It is a professional lead-acid batterymanufacturer that has obtained bonded factory and stock listing inChina. In the past five years, the number of battery shipments peryear has increased by 30%, and the business income has reached 4billion yuan. In order to diversify the production risk and expandthe sales market, we adopted the production and marketing policy ofinternational division of labor. As early as 1996, we set up afactory in Binli County, Vietnam, which is a foreign-fundedenterprise with investment earlier than the local establishment ofbattery production base. After 1999 and 2000 respectively completedISO9001 and ISO14001 certification, passed OHSAS18001 certificationin 2002, and listed in Taiwan in the same year. By 2007, it hadcompleted the construction of Dehe factory in Vietnam with an areaof 200000 square meters. In 2008, it had passed the TL9000communication / communication electronic industry quality systemverification. From the end of 2009 to 2010, it continued to carryout the expansion project of the second and third phase of theproduction base of Dehe factory.
In the manufacturing of products, Guanglong has revolutionaryinnovation and practice from technical system to management methodand business process, in addition to strict control over allproduction links. Our products are precisely manufactured andguaranteed to follow the quality management system. All series ofsealed battery products have passed UL safety standard. Inaddition, we have also passed the German VDS certification for thehigh-quality demand of the security control market in Europe.Product quality is deeply loved and recognized by well-knownmultinational enterprises at home and abroad. We believe thatcustomer satisfaction not only comes from the product itself, butalso the value added of customer satisfaction can be improved byestablishing a friendly relationship with customers through instantservice provision. Therefore, Guanglong won not only the Gold Awardfor customer satisfaction, but also the "Taiwan boutique Award" bythe Ministry of economy.
Our innovation and development come from abundant experience andenergy. Guanglong has a complete product line and competitiveadvantage in flexible manufacturing technology. So far, it hasdeveloped more than 400 kinds of batteries for different purposes,and continues to develop batteries for renewable energy such aselectric vehicles, solar energy and wind power. For the endlesspursuit and attitude of product innovation and development,Guanglong has cooperated with the Institute of materials of theInstitute of engineering and research since 1993 to develop thesealed battery for deep discharge, the battery for electric motorvehicles and the battery for high power upgrading, and introducednew technologies in many ways, and invested many advanced equipmentto show our faith and commitment to keep pace with the times andsustainable development.
Based in Taiwan, deeply ploughing in Vietnam, looking around theworld. Guanglong is committed to providing cleaner energy forglobal consumers, shouldering social and environmentalresponsibilities and maintenance, so as to drive the company'ssustainable growth and sustainable operation, and make unremittingefforts.
广隆LONG蓄电池基本特性：
1.贮藏容量高。
2.充放电无酸雾。可大电流充电（0.8C-1C
3.充电接受能力强。8秒内30C放电电流，
4.可大电流放电。电流不损伤。可多次尽放电，
5.可超深度放电。电池不会损害。可在50~60℃温度下使用。
6.适温性极强。完全免维护，
7.自放电小。全充电后，常温存放一年仍可正常使用。为铅酸电池的一倍。
8.使用寿命长。报废后全部资料可再生回收，
9.绿色环保无污染。电解质无污染。能在各种恶劣的环境下安全使用。
10.抗震性能好。使用时可任意方位放置。
Basic characteristics of Guanglong long battery:
1. High storage capacity.
2. There is no acid mist during charging and discharging. Highcurrent charging (0.8C-1C
3. Strong charging acceptance ability. 30C discharge current in8 seconds,
4. High current discharge. The current is not damaged. It candischarge several times,
5. It can discharge beyond the depth. The battery will not bedamaged. It can be used at 50 ~ 60 ℃.
6. The temperature adaptability is very strong. Completelymaintenance free,
7. Small self discharge. After fully charging, it can still beused normally after being stored at normal temperature for oneyear. Double the lead-acid battery.
8. Long service life. All data can be recycled afterscrapping,
9. Green and environmental protection without pollution. Noelectrolyte pollution. It can be used safely in all kinds of badenvironment.
10. Good seismic performance. It can be placed in anydirection.
.整流器主要作为充电器使用，功率大大降低（输出80KW的不间断直流电源，其充电器容量只需21.6KW！），制作成本下降、可靠性提高；
6. 不用考虑旁路问题，去掉重复变换，线路结构简化，减少了故障点，其体积、重量大大降低。
7. 直流输出不存在谐波和功率因数问题。
8. 减少热耗，即减少了空调的消耗。
9. 上级电网负担小且由于发电机直接对负载，大大减少其容量。
10. 输出端可设大电容，方便储能且提高直流输出波形的平滑性。
11. 不受电源相数约束，小功率充电器可为单相。
12. 电池组电压低，安全；也方便连接太阳能极板。
其中主要好处是：节能且容易并机；理论上并机数量不受限制。
我觉得人们做事，从开始到成功，好比要从A点到达B点，如果有若干条路径可选，那末，自然
会选择短路径，而不会去绕远。在实际做事中，却往往没有选择短路径；其原因是：不能认识到还有更短路径；或认识到了但执行较难。我认为数据中心采用直流供电系统的问题属于第二种情况。数据中心机房供电中用直流UPS系统是必然趋势，这是由数字设备的直流供电需求和交流UPS原理所决定的。其实很多人也有同样想法，并在努力探索。
近期的情况表明，一些数据中心的建设方强烈要求采用直流UPS供电系统；似乎美好想法要变成现实了！在项目方案设计中，我深感还不是那么简单！
我想用某个数据中心项目实例说明当前的问题所在。
某项目建筑面积：60万平米，40000个机柜，20KW/机柜，10个机柜/列，特别重要负载总用电量800MW。
用电量估算
1）交流UPS系统供电方式（交流UPS效率97.6％，输出380V/220V）
数据中心总耗电：1111.32MW，电能利用效力（PUE）：1.39，总耗电/建筑使用面积：2.22KW/M2，发电机组容量：1104.89MW。其中
UPS系统耗电及与总耗电之比：19.7MW，1.77％；
空调系统耗电与总耗电之比：284.91MW，25.64％；