Iraqi Journal for Mechanical and Materials Engineering最新文献_第5页

IMPACT OF ADDING OXYGENATES TO DIESEL FUEL ON ENGINE’S PERFORMANCE AND EMISSIONS 柴油中添加含氧化合物对发动机性能和排放的影响

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-09-28 DOI: 10.32852/iqjfmme.v20i3.514

Marwa Naji Kareem, A. Saleh

{"title":"IMPACT OF ADDING OXYGENATES TO DIESEL FUEL ON ENGINE’S PERFORMANCE AND EMISSIONS","authors":"Marwa Naji Kareem, A. Saleh","doi":"10.32852/iqjfmme.v20i3.514","DOIUrl":"https://doi.org/10.32852/iqjfmme.v20i3.514","url":null,"abstract":"??investigation of performance and emission of conventional a four-stroke, single-cylinder direct injection (DI) diesel engine at variable engine speed range from (1500 to 3000 rpm), carried out at steady-state tests conditions with diesel fuel and biodiesel which is produced from sun flower oil mixed with the higher alcohol. The blends effects on the performance and emission for the blended fuels measured and compared. 10% and 15% of Pentanol, Octanol added to the biodiesel blended with diesel for various test conditions. The experimental results showed an approximately 2–9% increase in the brake-specific fuel consumption (BSFC) for the prepared blends of pentanol and octanol due to the lower heating value (LHV), with higher brake thermal efficiency compared to diesel fuel. With expressively reduction of (9.8-21% vol.) in carbon monoxide (CO), and total unburned hydrocarbons (THCs) of (65-78.3% ppm), and nitric oxides (NOx) (44.4–52.9% ppm). The combustion analyses showed that the addition of biodiesel to conventional diesel fuel decreased the ignition delay and reduced the properties. These results indicated that biodiesel and higher alcohol could be used without any engine modifications as an alternative and environmentally friendly fuel.","PeriodicalId":31812,"journal":{"name":"Iraqi Journal for Mechanical and Materials Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49029123","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

EXPERIMENTAL INVESTIGATION OF NEW DESIGN OF SOLAR WATER DISTILLATION COUPLED WITH FLAT PLATE SOLAR WATER COLLECTOR 平板太阳能集水器与太阳能蒸馏器耦合的实验研究

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-09-28 DOI: 10.32852/iqjfmme.v20i3.512

Sabah Tarik Ahmed, Hussein Hayder Mohammed Ali

{"title":"EXPERIMENTAL INVESTIGATION OF NEW DESIGN OF SOLAR WATER DISTILLATION COUPLED WITH FLAT PLATE SOLAR WATER COLLECTOR","authors":"Sabah Tarik Ahmed, Hussein Hayder Mohammed Ali","doi":"10.32852/iqjfmme.v20i3.512","DOIUrl":"https://doi.org/10.32852/iqjfmme.v20i3.512","url":null,"abstract":"An experimental investigation involves the effect of the turning hollow-cylinder within a solar water distillation on the output of distillate water. This study is to be conducted in order to validate the optimum productivity of purification water by turning hollow-cylinder. The experiments were carried out in Kirkuk city, Iraq, 2018.Experimental results demonstrated that a basin water height is (1 cm) gives the better productivity of (1225 ml/ m2.day) for the conventional solar water distillation, and (2 cm) basin water height for the modification solar water distillation gives the optimum productivity which is (3540 ml/m2.day) which represent an increase of 188% when compared with the productivity of the conventional solar water distillation. 0.5 rpm and 1rpm are the optimum rpm for the hollow cylinder for the modification solar water distillation without and with flat plate solar water collector. The maximum percentage of productivity obtained from the modification solar water distillation which connected to a solar water heater with automatically varying speed according to the solar radiation intensity (Auto turning + Collector) gives more than (310%) enhancement. The estimated cost of one litre distillate water output for modification and conventional solar water distilleries were 136 ID and 175 ID respectively.","PeriodicalId":31812,"journal":{"name":"Iraqi Journal for Mechanical and Materials Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46202919","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

DETERMINE SIMULATION MODEL OF ELECTRONIC CONTROL SYSTEM FOR DIRECT INJECTION COMPRESSION COMBUSTION ENGINE 确定了直喷压缩内燃机电控系统的仿真模型

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-09-28 DOI: 10.32852/iqjfmme.v20i3.513

Haydar M. Razoqe, M. Mashkour

引用次数: 0

SOLAR DESALINATION UNIT BASED ON HUMIDIFICATION-DEHUMEDIFICATION PROCESSES INTEGRATED WITH FPC 基于加湿-除湿工艺与FPC集成的太阳能海水淡化装置

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-09-08 DOI: 10.32852/iqjfmme.v19i3.371

K. Amori, Athraa Al-Abbasi

{"title":"SOLAR DESALINATION UNIT BASED ON HUMIDIFICATION-DEHUMEDIFICATION PROCESSES INTEGRATED WITH FPC","authors":"K. Amori, Athraa Al-Abbasi","doi":"10.32852/iqjfmme.v19i3.371","DOIUrl":"https://doi.org/10.32852/iqjfmme.v19i3.371","url":null,"abstract":"ABSTRACTA humidification-dehumidification (HDH) desalination system integrated with flat plate collector (FPC) was investigated experimentally in an attempt to study the production of fresh water using renewable energy. Two types of solar collectors; concentrated parabolic trough solar collector (to heat oil) and non-concentrated (FPC) (to heat saline water before entering the humidifier) were used in this work. Photovoltaic panels (PV) with DC to AC inverter are used to operate, air fan, oil pump and water pumps. The experiments were carried out in August 2016 under climatological conditions of Baghdad- Iraq (latitude 33.33° N, of longitude 44.4° E). Performance of the HDH system is examined with and without FPC. Saline water was first filtered by a sand filter to reduce water turbidity by (85% – 90%) and is also working to eliminate lichens and the suspended solids from saline water. This filtered saline water was processed through humidification dehumidification system based on solar collector for heat source. Selected water samples are tested for Total Dissolved Salt (TDS) in (mg/l), pH, turbidity in (NTU) and electrical conductivity in (?s/cm) measured before and after desalination process. Before filter the water Turbidity is about (11.2 NTU) while after sand filter it is decreased to (1.94 NTU) and it was (0.1 NTU) after dehumidifier. Results showed that the accumulated productivity is (1050 milliliter); it has been improved by 62%when using FPC.","PeriodicalId":31812,"journal":{"name":"Iraqi Journal for Mechanical and Materials Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43364320","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

W1FINITE ELEMENT ANALYSIS OF PIPES CONVEYING FLUID MOUNTED ON VISCOELASTIC FOUNDATIONS 粘弹性基础上流体输送管道的有限元分析

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-09-08 DOI: 10.32852/iqjfmme.v19i3.373

N. Mostafa

{"title":"W1FINITE ELEMENT ANALYSIS OF PIPES CONVEYING FLUID MOUNTED ON VISCOELASTIC FOUNDATIONS","authors":"N. Mostafa","doi":"10.32852/iqjfmme.v19i3.373","DOIUrl":"https://doi.org/10.32852/iqjfmme.v19i3.373","url":null,"abstract":"AbstractIn this study, the stability of a simply supported pipeline conveying fluid with different velocities and resting on viscoelastic foundation is investigated by using finite element analysis, and the critical fluid velocity with different parameters such as stiffness and viscous coefficients of foundation are obtained. This structural system could be found in pipes conveying petrol, water, and sewage. The foundation is simulated using the modified Winkler's model to introduce the effect of time dependent viscosity term. Some known results are confirmed and some new ones obtained. Two components of foundation, stiffness and viscosity, seemed to act on the critical flow velocity of the pipe in contrary trend. Where, increasing the foundation stiffness tended to increase the critical flow velocity in the pipe. While, increasing foundation viscosity attempted to decrease it. At some ranges of pipe length, the foundation viscosity effect seems to be more extreme. Increasing the fluid velocity leads to monotonic reduction in the system damping ratio. Two parameters, pipe length and fluid density which relate to the natural frequency of pipeline conveying fluid are studied in detail and the results indicate that the effect of Coriolis force on natural frequency is become more effective by increasing pipe length and fluid density besides increasing fluid flow velocity.","PeriodicalId":31812,"journal":{"name":"Iraqi Journal for Mechanical and Materials Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43195964","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

EXPERIMENTAL DETERMINATION OF CONDENSER LENGTH EFFECT ON THE THERMOSYPHON PERFORMAN 冷凝器长度对热虹吸性能影响的实验测定

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-09-08 DOI: 10.32852/iqjfmme.v19i3.377

Z. Talib, R. Sahar, A. I. Aseel

{"title":"EXPERIMENTAL DETERMINATION OF CONDENSER LENGTH EFFECT ON THE THERMOSYPHON PERFORMAN","authors":"Z. Talib, R. Sahar, A. I. Aseel","doi":"10.32852/iqjfmme.v19i3.377","DOIUrl":"https://doi.org/10.32852/iqjfmme.v19i3.377","url":null,"abstract":"ABSTRACTIn the current work, a thermosyphon was used to investigate the effect of condenser length on its performance. Experimentally by using a pipe of copper having same evaporator length of 120 mm and three different condenser lengths which were 400 mm , 500 mm and 600 mm. The internal and external diameters of the thermosyphon were 26 mm and 28 mm respectively. The evaporator part of the thermosyphon was immersed in the electrical transformer oil, which heated by external heater from ambient temperature to approximately 80 oC, while the condenser part was left to cool naturally by air. Five thermocouples were located on the thermosyphon wall to read the temperature distribution at different positions. The working fluid was water with filling ratio of 50%.The results have obviously shown that temperature gradient was decreased when the condenser length increased and giving a better performance for heat dissipation. The percentage of temperature gradient was positively correlated to the condenser length and it was found that condenser length of ( 400 , 500 , 600) mm gave percentage of decreasing temperature gradient are 67.94 % , 72.94 % , and 77.06 % respectively with respect to that without using thermosyphon .","PeriodicalId":31812,"journal":{"name":"Iraqi Journal for Mechanical and Materials Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49125920","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

STUDY OF MECHANICAL PROPERTIES AND WEAR BEHAVIOR OF ALUMINUM MATRIX COMPOSITES REINFORCED WITH SILICON CARBIDE PARTICLES 碳化硅颗粒增强铝基复合材料的力学性能和磨损性能研究

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-09-08 DOI: 10.32852/iqjfmme.v19i3.379

Zehra Jilham

引用次数: 0

ANEW METHOD FOR DEPOSITION OF CERAMIC COATING ON AL ALLOY USING DUPLEX PROCESSES OF ANODIZING AND AL2O3MODIFIED ELECTROLYTE MICRO-ARC OXIDATION (MAO) 阳极氧化和al2o3修饰电解质微弧氧化复合工艺沉积铝合金陶瓷涂层的新方法

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-09-08 DOI: 10.32852/iqjfmme.v19i3.375

S. Awad

引用次数: 0

EXPERIMENTAL AND NUMERICAL INVESTIGATION TO THE EFFECT OF EGG SHELL NANOPARTICLES ON THE PERFORMANCE OF DOUBLE PIPE HEAT EXCHANGER 蛋壳纳米颗粒对双管换热器性能影响的实验与数值研究

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-09-08 DOI: 10.32852/iqjfmme.v19i3.372

M. Kassim

引用次数: 0

EFFECT OF SiO2 NANOPARTICLES ADDED TO DIESEL FUEL ON THE PERFORMANCE AND POLLUTANT EMISSIONS OF A FOUR STROKE DIESEL ENGINE 柴油中添加SiO2纳米粒子对四冲程柴油机性能和污染物排放的影响

Iraqi Journal for Mechanical and Materials Engineering Pub Date : 2019-05-26 DOI: 10.32852/IQJFMME.V19I2.329

S. M. Abdulhaleem

引用次数: 2