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防晒隔热涂料助力建筑屋顶降温节能? 筑屋顶 防晒隔热涂料 是一种新型降温节能材料。这种用于屋顶的防晒隔热涂料是集反射、辐射与空心微珠隔热于一体的新型降温涂料,涂料能对400nm~2500nm范围的太阳红外线和紫外线进行高反射,不让太阳的热量在物体表面累积升温,又能自动辐射热量散热降温,把物体表面的热量辐射到太空中去,降低物体的温度,即使在阴天和夜晚涂料也能辐射热量降低温度,同时在涂料中放入导热系数极低的空心微珠隔绝热能的传递,即使在大气温度很高时也能隔住外部热量向物体内部传导,保证了涂刷涂料的物体降温,确保了物体内部空间能保持持久恒温的状态。 在阳光强烈时,涂料可以使物体 表面温度 降低20℃以上,阴天和夜晚可以降温3℃以上或是降低到和大气温度一致。涂料对涂刷细小的裂纹的物体有很好的防水、防渗漏作用。涂料有多种颜色可供选择,可根据不同颜色要求涂刷不同颜色的防晒隔热涂料,另外涂料涂刷完光滑平整,疏水性、自洁性能好,所以常温降温涂料是高效降温、薄层、装饰、自洁、防水、防潮、 防紫外线 老化、耐酸碱、防腐于一体的新型防晒隔热节能长寿命涂料。 建筑屋顶防晒隔热涂料可广泛用于建筑、化工、石油、电力、冶金、船舶、轻纺、储存、交通、航天等行业上降温隔热,节约能源,创造舒适的人类生活、工作环境。 查看更多 0个回答 . 1人已关注
请问有GB/T 2449-2006 工业硫磺的英文翻译版吗? 各位,请问有GB/T 2449-2006 工业硫磺 的英文翻译版吗?或者工业硫磺标准相关的英语材料能否给共享一下,感谢!查看更多 1个回答 . 2人已关注
寻找高手帮帮我看看啊? 循环物料怎么算 啊 为什么单个的收敛 循环的那么大的物流啊 求助啊 谢谢啊 查看更多 1个回答 . 2人已关注
精馏塔油温高的原因? 水温,和真空都正常就是油温有点偏高查看更多 0个回答 . 5人已关注
焦化厂的净化工艺和煤制气、煤制油的工艺有什么区别? 大家给分析分析吧?查看更多 0个回答 . 3人已关注
硫磺装置备品备件? 各位师傅: 谁有 硫磺 装置开工的备品备件材料计划,谢谢各位,能不能发一份,借鉴借鉴,谢谢啊。 急急急急急急急 查看更多 5个回答 . 5人已关注
恭贺太原理工大学化学化工学院60周年校庆!? 今天2009年9月5日,太原理工大学化学化工学院迎来了60周年院庆!在此祝愿化学化工学院拥有更加美好的明天!-工大学子查看更多 9个回答 . 5人已关注
醋酸乙烯装置精馏塔中关于乙烯丙烯酸酯除去的问题? 装置采用 乙烯 法生产 醋酸乙烯 ,反应液中组分主要有:醋酸乙烯,水,醋酸,,乙烯丙烯酸酯,水,甲乙酯等,第一个塔利用水和醋酸乙烯共沸,顶部为醋酸乙烯和水,塔釜为醋酸,测线采出乙烯丙烯酸酯(塔板温度在70左右),但是查阅相关文献发现乙烯丙烯酸酯沸点为92左右,是不是和其他东西共沸啊?而且这个东西特别容易堵塔板,必须找准位置尽量才出来,在塔内集聚塔很容易堵, 精馏塔 为常压塔。 查看更多 0个回答 . 2人已关注
急求:造气块煤的规格,请各位大侠相助!? 我们用块煤造 氢气 ,设计单位没有提供白煤的规格标准,只说是碳含量76%的优质白煤。请问坛中的各位前辈,造气用块煤的规格?都要测哪几个指标?如何检验?有没有执行的国家标准? 请大家给予指点,不胜感激!查看更多 4个回答 . 2人已关注
如何和老外交流,且看老外如何说? 如何和老外交流,且看老外如何说 Just the other day, I was in a bookshop and spotted a volume entitled How to Make Friends with Foreigners by Li Yang of Crazy English fame.Naturally, as a foreigner who has been living in China for a year, I was curious to see what kind of advice a Chinese writer was giving on this matter.    One piece of advice really grabbed my attention and, I must say, made me feel quite annoyed.In Li’s opinion, foreigners are an“opportunity”to improve your oral English; whenever you see a foreigner, you should practice speaking English to him/her. The writer goes on to say that if the foreigner doesn’t want to answer your questions, then he/she is a rude person who you wouldn’t want to spend time with anyway.I think this counsel is not only incorrect, but also potentially damaging to relations between Chinese and foreigners in China.    Like most other laowai living in China, I know how isolated one can sometimes feel living amid a culture far removed from our own familiar ways. However, most of the time this cultural isolation is something I simply accept as part of being here. I am, after all, here to learn about the people and the language of China and if I really hated this place then I would go home! So far my time in China has been very rewarding. I have improved my Chinese language skills, learnt about one of the most fascinating, swiftly developing countries in the world today and made some very close Chinese friends.    Unfortunately, I have also come across many Chinese people who view me purely as an“opportunity”to improve their oral English under the guise of making friends. I have experienced people following me home from town to my college flat and then harassing me to teach them English or practice English with them. I have had complete strangers thrusting articles, manuals and speeches in my face, insisting that I help them with the English translation. I have had people asking me to assist with immigration applications to other countries. All of these people have claimed at the time that what they chiefly wanted was to make friends with me. There was even one person at the weekly English Corner that I run at college who, after plying me with non-stop questions for half an hour, became very angry when I politely asked him to give other people a chance to speak. He puffed himself up like a peacock and inFORMed me that he was simply trying to be my friend.    He may well have thought he was trying to be my friend, butswheresI come from you don’t build friendships by pestering and badgering another person. Friendship for a lot of Westerners is about spending time with someone whose company you genuinely enjoy.It’s not about opportunities or personal advantage.The Chinese friends I have made while living here have been genuine friends to me; we enjoy each other’s company for its own sake.In this way, we’ve not only learnt a good deal about each other’s culture but also about each other as individuals.    I’m not suggesting that you shouldn’t approach foreigners at all. However, I do think that it’s important to question your own motives. If you truly want to make friends with someone from a different country, who could possibly object?On the other hand, if your only motive is to“use”the foreigner as a way of improving your English, then it’s quite likely that the foreigner will be able to see through you - and will definitely not want to spend time with you.    So if there’s any advice to give on making and keeping friendships with foreigners, I would say that it is this:Treat foreigners as people, not opportunities.Expect to make friendships gradually, over a period of time, not instantly. And don’t ply foreigners with lots and lots of disparate questions. At times, this approach comes across as confusing and unnatural.    Finally, I would suggest that if you really want to make friends with a foreigner, then you do so because you are genuinely interested in the person. We all know that true friendships stand the test of time. If your only reason for making friends with a foreigner is to upgrade your English, then you will probably find that you don’t have a foreign friend for long!查看更多 8个回答 . 2人已关注
实验室内实现低温的方法? <a href="http://www.seeus.cn/bbs/misc.php?action=viewratings&amp;tid=5069&amp;pid=8710" target="_blank" ><IMG src="http://www.seeus.cn/bbs/images/default/agree.gif" align=right border=0></A> 实现低温的方法<BR><BR> <DIV >实现低温的方法<BR><BR>在实验中,我们不但经常使用高温环境,在某些高活泼性的物质时,必须使用低温环境,因此,制作低温环境,显得非常重要。<BR><BR>制造低温的方法<BR>1、 利用冰在溶解过程中的冷冻混合物(冰盐冷剂)产生低温:<BR>碎冰: 0~ -5℃;<BR>3份冰+1份食盐:-15~-18℃;<BR>3份冰+3份 结晶氯化钙 (CaCl2?6H2O):-40℃;<BR>3、 4份冰+5份结晶氯化钙:-40℃~-50℃;<BR>2份冰+1份浓HNO3:-56℃。 -----------???<BR>无论用哪一种冷冻混合物,先决条件是须将冰和盐很好地粉碎,而且要混合均匀。用两种冷冻混合物时,须先将CaCl2?6H2O或浓HNO3在冰箱中冷却,才能达到上述温度。<BR>2、 用升华过程来产生低温:<BR>固态二氧化碳(干冰):-78.9℃;<BR>固态二氧化碳+乙醇:-72℃;<BR>固态二氧化碳+乙醚、氯仿或丙酮:-77℃。<BR>由于固态二氧化碳的导热能力很差,应将它混合在一种适当的液体中使用,譬如丙酮、酒精等。三氯乙烯特别合适,因为 固体二氧化碳 能漂浮在三氯乙烯面上,因此混合物就不会发泡沫而溢出。<BR>3、 利用蒸发过程产生低温:<BR>在实际应用中液氮有一定的优点,它是一种无色、无臭、无味的液体,微溶于水,对热电传导不良,稍轻于水,不产生有毒或刺激性气体。同时不燃烧亦不自炸,与钠、钙或镁结合,形成氮化物(Nitrides),最冷点为-196℃。因此采用液氮有很多优点:①、在大气压下沸点较低(-196℃),如果配合适当的调节控制系统可获得在零下37~196℃之间的任意一个温度。②、生产成本低,来源容易。③、安全可靠。</DIV>查看更多 2个回答 . 3人已关注
初级质量工程师? 为啥你上传的文件有错误查看更多 11个回答 . 1人已关注
请大家看一下图片,请教一下这两片法兰厚度是否满足标准? 这筒体和封头相连的两个法兰厚度差别有点大,薄的在8mm左右,厚的在25mm左右查看更多 12个回答 . 2人已关注
加氢反应进料泵自启? 我们的加氢反应进料泵在一台运行正常时自启,被巡检人员发现,室内操作没有及时发现,因为进料泵是联锁的,室内不复位,另一台泵不应该启动,但现场也无人操作,最后导致密封漏油,幸好及时处理。查询连锁系统没问题,配电室说是高电短路造成,具体不清楚原因。很少碰到这样的事情,请教查看更多 8个回答 . 1人已关注
请教直接染料? 直接耐晒 黄RS 直接耐晒黑GT 直接耐晒棕红Rn 他们的结构都是什么啊,现在的市场怎么样啊查看更多 4个回答 . 5人已关注
2011专业知识下 17 18题? 17、用φ76×3mm的管线输送冷却水,管路长40m,管内流速为3m/s,在管路上共装有900标准弯头4个,闸阀(1/2开度)2个,管内流动类型按湍流处理。已知此 不锈钢管 摩擦系数λ=0.027,900标准弯头的阻力系数=0.75,闸阀(1/2开度)阻力系数=4.5,管路的总阻力损失(J/kg)是下列哪一项? A、41 B、30 C、61 D、123 18、氨生产负荷为62.5t/h的 合成氨 装置余热输出副产低压蒸汽18t/h, 引风机 、给水泵等均采用电机驱动(5000kW)《GB/T2589-2008综合能源计算通则》规定平均低位发热量折合电力当量值为3596kJ/(kW·h),低压蒸汽为3764MJ/t。试计算仅这两项影响装置吨氨消耗(GJ/t氨)的变化是下列哪一项? A、130 B、30 C、-0.80 D、0.80 网上给的答案17 C 18C 对吗 查看更多 5个回答 . 2人已关注
天气冷的时候,机泵冷却水冻住了怎么处理?? 天气冷的时候,机泵冷却水冻住了怎么处理??? 在北方比较寒冷的地方,机泵和管道的防冻措施主要有哪些??? 查看更多 5个回答 . 3人已关注
将压缩机低压缸的一次平衡管和高压缸的二次平衡管连接的 ...? 压缩机 高低压缸 串联 布置,想问一下压缩机低压缸的一次平衡管和高压缸的二次平衡管连接的作用是什么?使高压缸的轴端密封参考气为低压缸入口气?查看更多 2个回答 . 3人已关注
甲醇合成塔出口温度不受汽包压力控制探讨? 甲醇 合成塔 出口温度不受汽包压力控制探讨 通常,甲醇合成塔出口温度受汽包压力控制,每提高一个压力温度升高1.35-1.5℃。大家见过甲醇合成塔出口温度不受汽包压力控制的现象吗? 查看更多 11个回答 . 2人已关注
注册监理工程师是个好的方向么? 说得对,我认为年轻不要干监理,一是没经验,不能看出工程中的问题,工工程监理是终身制,说不定你要被套上,二是现在监理其时也就是吃八方的,哪边有得利就往哪边说话,没意思,说白了为了钱,出卖自己 现在的监理确实就是这个样....一般来说监理内部管理层收入较高 像项目经理、总监什么的 实际工作的监理工程师拿的就相对较少了 有证收入会高一点 貌似现在电力方面的监理拿的较多 长年在外 工资普遍也就是3000多块 其他监理公司应该还到不了这个数(当然牛X的除外。。) 现在施工单位有点脑子的项目经理就是先搞定总监,至于下面那些专工嘛~ 一般意思一下就过了 年轻还是别做这个。。。学不到东西 还耽误时间 弄不好一辈子都在外面跑 有能力向上爬的就看自己喜好了 查看更多 36个回答 . 1人已关注
简介
职业:江西恩凯金属科技有限公司 - 销售
学校:德州学院 - 化学系
地区:辽宁省
个人简介:青年总是年青的,只有老年才会变老。查看更多
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