INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)最新文献_第8页

THE EFFECT OF DARRIEUS AND SAVONIUS WIND TURBINES POSITION ON THE PERFORMANCE OF THE HYBRID WIND TURBINE AT LOW WIND SPEED 低风速下，darrieus和savonius风力机位置对混合风力机性能的影响

INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) Pub Date : 2020-02-13 DOI: 10.31224/osf.io/grbmv

N. M. Ali, A. Hassan, Sattar Aljabair

{"title":"THE EFFECT OF DARRIEUS AND SAVONIUS WIND TURBINES POSITION ON THE PERFORMANCE OF THE HYBRID WIND TURBINE AT LOW WIND SPEED","authors":"N. M. Ali, A. Hassan, Sattar Aljabair","doi":"10.31224/osf.io/grbmv","DOIUrl":"https://doi.org/10.31224/osf.io/grbmv","url":null,"abstract":"This paper presents an experimental and numerical simulation to investigate a hybrid vertical axis wind turbine model highly efficient which can be worked at low wind speed by studying the aerodynamic characteristics of four models of hybrid VAWTs. The hybrid WT consists of the SWT having two blades and the DWT type straight having two blades. Four models were constructed to study experimentally and numerically to choose the best model. Two models were DWT in the upper and SWT in the lower, also two models were SWT in the upper and DWT in the lower. The phase stage angle between the turbines is 0o and 90o . The experimental and numerical results showed that the performance of hybrid WT where DWT in the upper and SWT in the lower with phase stage 90o is better than in the other models, it can be started to work at a wind velocity of 2.2 m/s. At the wind velocity 3 m/s, the values of the parameters are the rotational speed (198 rpm), the CP (0.3195), the CT (0.2003), the TSR (1.6) and self-starting rotation at this value of wind velocity (3 m/s). The efficiency of extracting the wind power by hybrid WT is (51.2 %).","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124733306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

CFD ANALYSIS OF HEAT EXCHANGER MODELS DESIGN USING ANSYS FLUENT 基于ansys fluent的换热器模型设计CFD分析

INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) Pub Date : 2020-02-07 DOI: 10.31224/osf.io/drnb4

R. Kishan, Devendra Singh, A. Sharma

引用次数: 4

MODELLING AND SIMULATION OF A CONVEYOR BELT SYSTEM FOR OPTIMAL PRODUCTIVITY 传送带系统的最优生产率建模与仿真

INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) Pub Date : 2020-02-07 DOI: 10.34218/ijmet.11.1.2020.012

G. Salawu, G. Bright, C. Onunka

引用次数: 6

INFLUENCE OF EMOTION BASED INTEGRATED LEADERSHIP ON R AND D LEADER PERFORMANCE 基于情感的整合型领导对研发领导者绩效的影响

INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) Pub Date : 2020-02-01 DOI: 10.34218/ijmet.11.1.2020.010

P. K. Rout, J. Das, Monoranjan Puthal

引用次数: 0

A REVIEW ON NATURAL FIBERS: EXTRACTION PROCESS AND PROPERTIES OF GRASS FIBERS 天然纤维的研究进展:草纤维的提取工艺及性能

INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) Pub Date : 2020-01-29 DOI: 10.34218/ijmet.11.1.2020.009

I. Lokantara, N. Suardana, I. Surata, I. Winaya

引用次数: 7

ELECTROPLATING PROCESS FOR COPPER COATING OF CORRUGATED METAL GASKETS TO INCREASE PERFORMANCE 电镀工艺为波纹金属垫片镀铜以提高性能

INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) Pub Date : 2020-01-25 DOI: 10.34218/ijmet.11.1.2020.008

D. Nurhadiyanto, S. Haruyama, Mujiyono Anon, W. Abbas

引用次数: 2

EFFECTS OF WATER EMULSIFIED B5-DIESEL AND BIOGAS ON THE COMBUSTION AND EMISSIONS OF RCCI ENGINE AT LOW LOAD 水乳化b5柴油和沼气对rcci发动机低负荷燃烧和排放的影响

INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) Pub Date : 2020-01-21 DOI: 10.34218/ijmet.11.1.2020.006

I. B. Dalha, M. A. Said, Z. A. A. Karim, A EzrannZ.Zainal

{"title":"EFFECTS OF WATER EMULSIFIED B5-DIESEL AND BIOGAS ON THE COMBUSTION AND EMISSIONS OF RCCI ENGINE AT LOW LOAD","authors":"I. B. Dalha, M. A. Said, Z. A. A. Karim, A EzrannZ.Zainal","doi":"10.34218/ijmet.11.1.2020.006","DOIUrl":"https://doi.org/10.34218/ijmet.11.1.2020.006","url":null,"abstract":"An experiment was conducted to investigate the effects of water in biodiesel emulsions (WiBE) and biogas on the reactivity-controlled compression ignition combustion for improved performance and reduced emissions. 13% WiBE, 15% WiBE and regular B5 were, directly, injected with the port injection of biogas at the intake valve, as a modified fueling approach. An advanced injection timing of 21o CA BTDC and energy fraction of 50% each of the fuels, were maintained at a speed of 2000 rpm and vary the load from 4.5 to 6.5 bar IMEP. The combustion of WiBE and biogas had been found disadvantageous to the rise in the cylinder pressure and heat released at high load but highly beneficial in reducing peak pressure rise rate besides lowering the in-cylinder temperature as a useful tool for low-temperature combustion technique. The use of WiBE and biogas resulted in a retarded combustion phase while B5 demonstrated more delayed combustion. Both 13% and 15% water emulsions exhibited similar carbon dioxide emission attributes but remained higher compared to the regular B5 at all the engine capacity except 6.5 bar IMEP. The fuels reactivity lowers significantly, the in-cylinder temperature causing elevated carbon monoxide (CO) and unburned hydrocarbon (UHC) emissions, by 41.09% and 19.61% respectively, along with the reduced nitrogen oxides emission by 50.85%. Use of strategies to raise the in-cylinder temperature may cut down the challenging emissions","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129678384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

PERFORMANCE EVALUATION OF END SUCTION, SINGLE STAGE, RADIAL DISCHARGE CENTRIFUGAL PUMP IN TURBINE MODE OPERATION 端吸单级径向排出离心泵水轮机模式运行性能评价

INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) Pub Date : 2020-01-21 DOI: 10.34218/ijmet.11.1.2020.007

Ajit Singh Aidhen, S. Malik, Chavan Dattatraya Kishanrao

{"title":"PERFORMANCE EVALUATION OF END SUCTION, SINGLE STAGE, RADIAL DISCHARGE CENTRIFUGAL PUMP IN TURBINE MODE OPERATION","authors":"Ajit Singh Aidhen, S. Malik, Chavan Dattatraya Kishanrao","doi":"10.34218/ijmet.11.1.2020.007","DOIUrl":"https://doi.org/10.34218/ijmet.11.1.2020.007","url":null,"abstract":"Pump as Turbine (PAT) provides a cost-effective alternative to conventional hydro turbines for high terrain rural areas where grid supply is not feasible. PAT technology is simple, low in cost and easy to harness. End suction centrifugal pumps are readily available as compared to conventional custom made hydro turbines. This paper presents theoretical, numerical and experimental study of radial discharge centrifugal pump in hydro turbine mode. Experimental setup is used to investigate performance of radial discharge end suction mono block centrifugal pump in pump and turbine mode and the results are compared with theoretical and numerical results. Performance characteristic of mono block pump of specific speed 20.28 (m, m3 /s) in turbine mode operation are determined through experiment. The experiment results reveal suitability of using a mono block centrifugal pump in hydro turbine mode. The results confirm that the pump in hydro turbine mode operate at higher heads and discharge as compared to the pump mode operation. BEP (best efficiency point) for the pump in hydro turbine mode is lower than in pump mode operation. Correlations proposed by earlier researchers for performance prediction of pump in hydro turbine mode are also tested.","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114238994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CHARACTERISATION OF VERY STRONGLY PERFECT GRAPHS 极强完美图的刻画

INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) Pub Date : 2020-01-20 DOI: 10.34218/ijmet.11.1.2020.005

G. Gandal, R. Jothi

引用次数: 0

DISCRETE MATERIAL AND THICKNESS OPTIMIZATION OF POP-UP SEAT FRAME IN STATIC CONDITION 静态条件下弹出式座椅框架离散材料及厚度优化

INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) Pub Date : 2020-01-20 DOI: 10.34218/ijmet.11.1.2020.004

Sang-In Moon, D. Shin, E. Jeon, Seong-Min Cha

引用次数: 1