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您的检索式：作者名="DANISH Syed Noman"
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| 1 | Waste heat recovery from heavy-duty diesel engine exhaust gases by medium temperature ORC system显示文摘A medium-temperature waste-heat recovery system based on the organic Rankine cycle (ORC) is designed to recover the exhaust energy from a heavy-duty diesel engine. Analysis of the 1st law of thermodynamics for an ORC system is performed. This analysis contains two parts. The first part is an analysis with undefined heat exchangers to gain an understanding of the ORC and find out suitable organic fluid parameters for a better ORC efficiency. The second part of the analysis uses combined engine test results and two designs of heat exchangers. By comparing the two designs, an improved system of heat exchangers is described. This analysis also quantifies the effect of engine parameters on ORC system. The study concludes that the supercritical Rankine cycle is a better approach towards waste heat recovery. The ORC system is found to perform better under part-load conditions if the medium-high power condition rather than rated working point of the engine is used as the design parameter. The ORC system achieves the highest waste-heat recovery efficiency of up to 10-15% for the optimised heat ex-changer design. | WEI MingShan FANG JinLi MA ChaoChen DANISH Syed Noman | 2011 | Science China(Technological Sciences)2011，54，10： | 16 |
| 2 | COMPARISON OF TWO METHODS TO INCREASE TIP CLEARANCE AND ITS EFFECT ON PERFORMANCE OF TURBOCHARGER CENTRIFUGAL COMPRESSOR STAGE显示文摘在片尖端和离心压气机的套之间的尖端清理能通过二个方法被改变:由改变片高度(M1 ) 或由改变套直径(M2 ) 。数字模拟被执行在舞台和 impeller 性能上比较这二个方法和他们的效果。impeller 并且更弥漫通过转子定子边界使用被连接冻结的转子途径。全面阶段性能和流动配置从没有差距为九个尖端清理层次被调查了到 1 公里。Impeller 和更弥漫的表演也独立被介绍。而 M2 在尖端清理的 0.5mm 上面被发现有益,外套和 impeller 性能对在 0.5 公里的尖端清理下面的 M1 比较地更好,这被发现了。有尖端清理的增加的 M1 和 M2 表演表演降级。二个模型为阶段总数压力比率和效率被建议了,它被发现与试验性的结果一致。impeller 效率和压力比率被发现在为两个的 0.1 公里的尖端清理最大最小的更弥漫的有效性也在一样的清理被观察的案例铺平。更弥漫的有效性被发现在为两个盒子的零差距最大。因为让零那么为 unshroudedimpellers 豁开实际上是不可能的,最佳厚度为 M1 和 0.5 公里向前是 0.5 公里更弥漫的有效性的 M2in 术语,这被结束。集体平均流动参数,熵,片装载图和相对压力域被介绍,显示出在有尖端清理的 impeller 经过以内的损失生产。 | SYED Noman Danish | 2007 | Chinese Journal of Mechanical Engineering2007，20，4： | 5 |
| 3 | Numerical Investigation & Comparison of a Tandem-Bladed Turbocharger Centrifugal Compressor Stage with Conventional Design显示文摘Extensive numerical investigations of the performance and flow structure in an unshrouded tandem-bladed centrifugal compressor are presented in comparison to a conventional compressor.Stage characteristics are explored for various tip clearance levels,axial spacings and circumferential clockings.Conventional impeller was modified to tandem-bladed design with no modifications in backsweep angle,meridional gas passage and camber distributions in order to have a true comparison with conventional design.Performance degradation is observed for both the conventional and tandem designs with increase in tip clearance.Linear-equation models for correlating stage characteristics with tip clearance are proposed.Comparing two designs,it is clearly evident that the conventional design shows better performance at moderate flow rates.However;near choke flow,tandem design gives better results primarily because of the increase in throat area.Surge point flow rate also seems to drop for tandem compressor resulting in increased range of operation. | Syed Noman Danish Shafiq Rehman Qureshi Abdelrahman EL-Leathy Salah Ud-Din Khan Usama Umer Ma Chaochen | 2014 | Journal of Thermal Science2014，23，6： | 0 |
| 4 | Modeling and Performance Simulation of an Innovative Concept of Linear Fresnel Reflector based CSP System显示文摘Concentrating solar power technology is one of the most promising alternative energy technologies.In recent past,Linear Fresnel Reflector systems have received great attention and novel designs have been proposed keeping in view the objective to enhance its functionality and performance.For achieving the same objective,this study presents a novel concept where a conventional LFR is enclosed in a greenhouse called greenhouse-LFR.It was expected that such an enclosure can:(1)increase the incoming solar radiation,(2)further improve the overall efficiency due to simplified cleaning process and(3)reduce the capital cost for the construction of LFR support system.A complete thermal and optical analysis was presented for modeling and performance evaluation of the solar field of both conventional-LFR and novel greenhouse-LFR.Sets of non-linear equations for each system were solved using Newton-Raphson method.More detailed optical analysis was further performed for conventional-LFR considering the seasonal variations.The results concluded that the greenhouse-LFR is better than the conventional-LFR as it had higher efficiency and useful heat with lesser heat losses.For greenhouse-LFR,the maximum thermal efficiency was 73.2%whereas for conventional-LFR it was 37.2%.Also,there was an average increase of useful heat by 3 times in the month of February and 4.7 times in the month of September.SolTrace^(TM) analysis indicated significant spillage loss when a conventional-LFR was used without a secondary reflector or slight curvature of the mirrors. | DANISH Syed Noman ALMUTAIRI Zeyad EL-LEATHY Abdelrahman AL-ANSARY Hany JARDAN Yazeed ALAQEL Shaker | 2021 | Journal of Thermal Science2021，30，5： | 0 |
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