Results 31 to 40 of about 433,820 (146)
, 2015 本发明公开了一种利用二氧化碳作为循环工质的热力循环系统，包括：热量回收模块、膨胀发电模块和冷凝模块；余热热源通过该热量回收模块将100～350℃的低温余热交换给导热介质，导热介质再通过该热量回收模块与循环工质进行热交换；受热后的循环工质驱动所述膨胀发电模块进行发电；驱动所述膨胀发电模块发电做功后的循环工质在所述冷凝模块进行冷却，再循环使用；其中，所述循环工质为CO2。本发明降低了余热回收利用的温度下限，大大提高了余热利用率，降低了工业产品的单位能耗 ...
李博, 魏小林, 李腾
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Structural Modulation of Magnetic Softness in Fe‐Based Amorphous Alloys via Pulse Current Training
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Fe‐based amorphous alloys, despite their intrinsically low magnetocrystalline anisotropy, suffer from quasi‐dislocation dipoles and localized stress fields that impede domain‐wall motion and increase coercivity. Here, we introduce pulse current training (PCT) as an energy‐efficient technique to overcome these limitations in a Fe76Si9B10P5 ...
Shumin Ye +13 more
wiley +1 more source
, 2004 一种带有空气部分循环的质子交换膜燃料电池系统，设有氢气回路、空气回路和冷却水回路。本发明的重点为空气循环回路。该空气循环回路的主要流程为：空气由空压机进入燃料电池的阴极，经过电化学反应后，由分水器进行气水分离；分离出的空气一部分通过循环泵返回到电池阴极的入口参加空气回路的循环，一部分空气排放至大气中。空气回路的空气循环比为0.015-0.065。气水分离出的水返回到燃料电池冷却腔的入口处，参加水路的循环 ...
燕希强 +4 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Laser powder bed fusion (LPBF) can fabricate high‐entropy alloys (HEAs) with refined microstructure and enhanced mechanical properties. However, the deformation and fatigue mechanisms of Al‐containing HEAs produced by LPBF remain unclear. In this work, we systematically investigate the tensile properties, deformation mechanisms, and high‐cycle
Dan Zheng +4 more
wiley +1 more source
基于STELLA的循环水养殖系统池塘总氨氮动态模拟 [PDF]
, 2013 通过对影响循环水养殖系统养殖池塘中总氨氮动态的各种因素及其因果关系的分析,得出了养殖池塘中总氨氮的理论模型。在理论模型基础上,使用STELLA系统动力学模拟软件建立了循环水养殖实验系统中池塘水体总氨氮的系统动力学模型。通过将系统设计和运行的相关参数代入到该模型中,对养殖过程中池塘中总氨氮的动态变化进行了模拟运算,模拟结果与实测值基本吻合,说明该模型对实验系统的模拟具有一定的可信度 ...
贺锋 +4 more
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Gongye shui chuli, 2010 循环冷却水采用旁流弱酸处理后，由于工艺改变了循环水运行的碱度、硬度，对判断循环水系统是否结垢带来了困难。通过在循环冷却水的动态模拟试验过程中监测凝汽器管的污垢热阻，循环水的碱度、硬度、pH的变化以及试验结束后观察试片的表面状态等方法，对循环水系统是否结垢进行了探讨。
张小霓, 吴文龙
doaj +2 more sources
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Aqueous zinc‐ion batteries are plagued by anode challenges such as dendrite growth and corrosion, which stem from intrinsic surface heterogeneity. Although constructing a homogeneous interfacial layer is a promising strategy, conventional electrolyte additives often suffer from incomplete or unstable coverage.
Ke Huang +6 more
wiley +1 more source
, 2004 黄河流域水循环规律在过去的50年中发生了巨大的变化,主要体现在水量减少、河床抬升、水质污染和河口造陆速度放缓等几个方面。导致这种变化的原因主要是人类活动取用水的大量增加,此外水利工程的调蓄、水土保持以及自然的气候因素导致降水量减少也是水循环发生变化的原因。过去50年来黄河的水循环规律的演变对我们今后认识黄河 ...
张士锋
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The development of high‐voltage aqueous zinc‐ion batteries (AZIBs) is primarily hindered by the lack of suitable cathode materials and electrolytes that can work in broad voltage windows. Herein, we propose a synergistic strategy that concurrently addresses these challenges through the integration of an amorphous vanadium oxyphosphate/graphene
Xianyu Liu +7 more
wiley +1 more source
基于复合垂直流人工湿地的循环水养殖系统净化养殖效能与参数优化 [PDF]
, 2008 该文对基于复合垂直流人工湿地(IVCW)的循环水养殖系统的净化效率、养殖效果和系统优化设计进行了研究。结果表明,在420 mm/d的水力负荷下,湿地可有效地去除循环水中的总悬浮物(去除率85%)、CODCr(去除率50%)、BOD5(去除率44%)、总氨氮(去除率53%)、亚硝酸盐(去除率83%)和硝酸盐(去除率54%),能够满足养殖用水的要求,整个试验期间系统实现了零污水排放。经过5个月的养殖,成功地将斑点叉尾鮰(Ictalurus punctatus)鱼苗(1.8 cm,0.08g)培育成鱼种 ...
贺锋 +5 more
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