Wasit Journal of Engineering Sciences最新文献_第9页

Impact of Cloud, Rain, Humidity, and Wind Velocity on PV Panel Performance 云、雨、湿度和风速对光伏板性能的影响

Wasit Journal of Engineering Sciences Pub Date : 2022-06-19 DOI: 10.31185/ejuow.vol10.iss2.237

Dawood Salman Hasan, Mansour S. Farhan, H. Alrikabi

{"title":"Impact of Cloud, Rain, Humidity, and Wind Velocity on PV Panel Performance","authors":"Dawood Salman Hasan, Mansour S. Farhan, H. Alrikabi","doi":"10.31185/ejuow.vol10.iss2.237","DOIUrl":"https://doi.org/10.31185/ejuow.vol10.iss2.237","url":null,"abstract":"Before the invention of solar panels, solar energy had been used for millions of years. To survive and increase many forms of life, people rely on sunlight. For example, use sunlight for warmth and have only recently begun to use the sun's energy to generate renewable and sustainable electricity. The widespread use of photovoltaic PV systems as a source of renewable energy-derived electricity has prompted researchers to investigate the factors that influence their performance. This paper presents an analytical study for assessing the performance of a 120 Wp PV module. This experiment was conducted at Al-Nasiriyah city ( 31.03 N, 46.16E ). At 180˚ south, and 45˚ elevation, the solar panel is omitted. Using solar panels, solar energy is converted into electrical energy that can power an entire building. The power production from the solar panel depends on several identified factors. In February and June, the solar panel tested the effect of cloud cover, rain, relative humidity and wind velocity. On rainy and cloudy days, average power and irradiance are reduced by 93.32 %, 93.77 %, and 79.97 %, 77.34 %, respectively, when compared to power and irradiance on a clear day (8th February) 693 W/m2 and 76.55 W. Humidity has an inverse relationship with voltage, current, and power. It means that as humidity rises, the value of voltage, current, and power decreases. The performance of a solar panel is directly proportional to the wind velocity. The temperature is inversely proportional to wind velocity, i.e. as wind velocity increases, the temperature of the solar cell module decreases. The results of this study have been analyzed and discussed.","PeriodicalId":184256,"journal":{"name":"Wasit Journal of Engineering Sciences","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126269467","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

The Effects Of Different Weather Conditions On 5G Millimeter Waves Propagations at 38 GHz and 73 GHz For Kut-City in Iraq 不同天气条件对伊拉克库特市38 GHz和73 GHz 5G毫米波传播的影响

Wasit Journal of Engineering Sciences Pub Date : 2022-06-08 DOI: 10.31185/ejuow.vol10.iss2.274

Hasan F. Khazaal, Hawraa Saadoon, T. Jamel

{"title":"The Effects Of Different Weather Conditions On 5G Millimeter Waves Propagations at 38 GHz and 73 GHz For Kut-City in Iraq","authors":"Hasan F. Khazaal, Hawraa Saadoon, T. Jamel","doi":"10.31185/ejuow.vol10.iss2.274","DOIUrl":"https://doi.org/10.31185/ejuow.vol10.iss2.274","url":null,"abstract":"It is critical to utilize a good model for predicting acceptable and optimum frequencies while designing and planning for the future generation wireless communications system's channel. This paper explains how the weather conditions affect the strength of the transmitted signal in various environments and circumstances, as well as how the mmWave behaves as it passes through free space and the atmosphere. An NYUSIM simulator package is used for predicting the performance of the channel for two months (January and July). Two frequencies were used, 38 GHz and 73 GHz to test the channel performance and which frequency is the best suited for the Kut city environment. The simulation results shown that an agreement with the 38 GHz for its lower path loss and acceptable received power. The weather database was real and actual obtained from the Iraqi meteorological organization and seismology reports consist of (rain, fog and temperature). The result for both directional and omnidirectional power delay profile showed a great agreement at 38 GHz for the two months (January and July), where the path loss and received power at 38 GHz for January is 127 dB and -47.2 dBm respectively, where for 73 GHz the path loss is 135.4 dB and with a received power of -55.7 dBm. At July the path loss and received power for 38 GHz and 73 GHz is (123 dB, -43.2 dBm) and (130 dB, -43.2 dBm) respectively.","PeriodicalId":184256,"journal":{"name":"Wasit Journal of Engineering Sciences","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128507669","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

Experimental Study of the Effects of Silica-gel Bed Thickness on The Regeneration Process in a Desiccant Column 硅胶层厚度对干燥剂柱内再生过程影响的实验研究

Wasit Journal of Engineering Sciences Pub Date : 2022-06-06 DOI: 10.31185/ejuow.vol10.iss2.281

Waleed Abdali, A. Hassen

引用次数: 0

Relation Between Swelling Pressure and Potential Expansion Soil with Atterberg Limits 具有Atterberg极限的膨胀压力与潜在膨胀土的关系

Wasit Journal of Engineering Sciences Pub Date : 2022-06-06 DOI: 10.31185/ejuow.vol10.iss2.333

S. M. Mearek, A. K. Shadhar, H. H. Abbood

引用次数: 0

Enhancement the Efficiency of Solar Cell by using Internet of Things Applications 利用物联网应用提高太阳能电池效率

Wasit Journal of Engineering Sciences Pub Date : 2022-06-01 DOI: 10.31185/ejuow.vol10.iss1.229

Mohammed Hassan Mjhool, Haider Th. Salim AL Rikabi AL Rikabi, Mansour S. Farhan AL Rikabi

引用次数: 0

The Effect of an Evaporative Cooler on the Thermal Performance of Passive Ventilation System Coupled with EAHE: An Experimental Investigation 蒸发冷却器对被动通风系统热工性能影响的实验研究

Wasit Journal of Engineering Sciences Pub Date : 2022-04-01 DOI: 10.31185/ejuow.vol10.iss1.234

Abbas Ghafouri, A. Jubear

{"title":"The Effect of an Evaporative Cooler on the Thermal Performance of Passive Ventilation System Coupled with EAHE: An Experimental Investigation","authors":"Abbas Ghafouri, A. Jubear","doi":"10.31185/ejuow.vol10.iss1.234","DOIUrl":"https://doi.org/10.31185/ejuow.vol10.iss1.234","url":null,"abstract":"An experimental study of a two-storey structure with a passive ventilation system is conducted in August, with the severe summer environment of Kut, Iraq. The experimental model consists of a solar chimney combined with a hybrid cooling system comprised of an Earth-air heat exchanger and an evaporative cooler. Each storey has a size of 1 m3, while the dimensions of the vertical solar chimney were 3m height, 1m width and 0.3m depth. The dimensions of the evaporative cooler were (0.3 * 0.3 * 0.6) m3; it has a two-nozzle water spray system and a low-power fan with a speed of 0.8 m/s. The Earth-air heat exchanger was 17 m long, 10.2 cm in diameter and 3 m deep under each floor. Two instances were investigated with and without EV for two separate daytimes (2-8-2021 and (3-8-2021). The findings revealed that EV increases the relative humidity inside each storey and enhances the thermal comfort rate. Based on recorded data, the relative humidity rate ranged from 35% to 42%, contrasted to the exterior relative humidity, which did not surpass 13%. In addition, the EV assisted in lowering the indoor temperature of each storey by 4 °C. Finally, due to the high solar radiation at the Kut city location in Iraq, the passive ventilation rates for the solar chimney were satisfactory for both storeys.","PeriodicalId":184256,"journal":{"name":"Wasit Journal of Engineering Sciences","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114119713","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

Computerized Road network modeling using open street map sources in GIS: Basrah province as a case study GIS中使用开放街道地图源的计算机化道路网络建模:以巴士拉省为例研究

Wasit Journal of Engineering Sciences Pub Date : 2022-04-01 DOI: 10.31185/ejuow.vol10.iss1.269

Ammar Dakhil

{"title":"Computerized Road network modeling using open street map sources in GIS: Basrah province as a case study","authors":"Ammar Dakhil","doi":"10.31185/ejuow.vol10.iss1.269","DOIUrl":"https://doi.org/10.31185/ejuow.vol10.iss1.269","url":null,"abstract":"Information sources have developed considerably in recent years; many electronic platforms are able to provide valuable information regards engineering topics. One of the most important data sources is the open street map (OSM) platform, providing editable geographic information for most of the world, with different levels of accuracy and at different points in time. Road network mapping requires a high level of effort and accuracy, due to the complexity of the modelling and the amount of information that needs to be included in the feature class. OSM can support road network modelling by providing a different kind of data. In this paper, a systematic procedure was investigated for the production of an automated road network for Basrah city, as a case study for the use of OSM in Geographic Information System (GIS) 10.8 software. Specific spatial analysis tools such as road density and network analysis were also implemented. This study validated a computerised procedure to extract OSM data via two methods of validation and demonstrated the immediate applicability of this data for density and network analysis.\u0000The research results show a significant reduction in time and effort required to produce an accurate Basrah city road network using OSM data sources. Density analysis and network analysis show the importance and validity of the produced road network.","PeriodicalId":184256,"journal":{"name":"Wasit Journal of Engineering Sciences","volume":"24 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114042316","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

Design of Adaptive PID Controller for Lower Limb Rehabilitation Robot Based on Particle Swarm Optimization Algorithm. 基于粒子群优化算法的下肢康复机器人自适应PID控制器设计。

Wasit Journal of Engineering Sciences Pub Date : 2022-04-01 DOI: 10.31185/ejuow.vol10.iss1.241

Noor Sabah, E. Hameed, Muayed S. Al-Huseiny

{"title":"Design of Adaptive PID Controller for Lower Limb Rehabilitation Robot Based on Particle Swarm Optimization Algorithm.","authors":"Noor Sabah, E. Hameed, Muayed S. Al-Huseiny","doi":"10.31185/ejuow.vol10.iss1.241","DOIUrl":"https://doi.org/10.31185/ejuow.vol10.iss1.241","url":null,"abstract":"The proportional-integral-derivative (PID) is still the most common controller and stabilizer used in industry due to its simplicity and ease of implementation. However, in most of the real applications, the controlled system has parameters that slowly vary or are uncertain. Thus, PID gains must be adapted to cope with such changes. \u0000In this research, an Adaptive Proportional-Integral-derivative controller (APID) is proposed to control the 2-DOF lower limb rehabilitation robot system. The parameters gains of the proposed controller are optimized using the Particle Swarm Optimization algorithm (PSO). The simulation results show no overshoot and zero steady-state error, but large settling time (ts=3.654 sec. for link1 and ts=2.844 sec. for link2) for linear path, and the actual path tracks the desired path with a large error for the nonlinear path. The results illustrate that the robot's performance is inefficient for linear and nonlinear paths when using the APID controller to control the lower limb rehabilitation robot. Therefore, the controller needs to modify for controlling the robot efficiently.","PeriodicalId":184256,"journal":{"name":"Wasit Journal of Engineering Sciences","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124980190","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

Modeling and Simulation of the Erosion Rate in Hydraulic Structures 水工建筑物冲蚀速率的建模与仿真

Wasit Journal of Engineering Sciences Pub Date : 2022-04-01 DOI: 10.31185/ejuow.vol10.iss1.239

Shams M. Cheyad, Ali N. Hilo, Thaar S. Al-Ghasham, Ali Hameed Abd, Rawaa H. Ismaeil

{"title":"Modeling and Simulation of the Erosion Rate in Hydraulic Structures","authors":"Shams M. Cheyad, Ali N. Hilo, Thaar S. Al-Ghasham, Ali Hameed Abd, Rawaa H. Ismaeil","doi":"10.31185/ejuow.vol10.iss1.239","DOIUrl":"https://doi.org/10.31185/ejuow.vol10.iss1.239","url":null,"abstract":"Basically, the durability of hydraulic structures is heavily influenced by concrete surface resistance against mechanical wear. Hydro-abrasion is the term used to describe deterioration of concrete surface inflicted by the continuous removal of surface material due to the effect of water-dragged solids. This type of cumulative damage for the surface of concrete may be seen in practically all hydraulic systems, in varying degrees of severity. Essentially, such hydro-abrasive concrete wear reduces the life span of the hydraulic structure, and as a result of the maintenance necessary, the facility's non-operation during the repair time increases costs. The impact employed by the flow inclination angle, density (sand concentration in water), and velocity were studied in this work. The three various angles (30°, 45°, and 60°) different densities (35 and 45 kg/m3), and different velocities of 600, 900, and 1200 rpm were numerically determined using the program of ANSYS and the discrete phase model (DPM) for simulating the fluid solids. According to the directed numerical simulation, the greatest rate of erosion was observed when the inclination angle of the flowing water was 60°, while the least value was obtained when the inclination angle of flow was 45°, in addition, the erosion rate increases as the density and velocity increases.","PeriodicalId":184256,"journal":{"name":"Wasit Journal of Engineering Sciences","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127758351","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

Numerical Modelling of Underground Water Pipelines exposed to Seismic Loading 地震作用下地下水管道的数值模拟

Wasit Journal of Engineering Sciences Pub Date : 2022-01-14 DOI: 10.31185/ejuow.vol9.iss2.283

Dhuha F. Yousife, Asad H. Aldefae, S. Zubaidi, Alaa N. Aldelfee

{"title":"Numerical Modelling of Underground Water Pipelines exposed to Seismic Loading","authors":"Dhuha F. Yousife, Asad H. Aldefae, S. Zubaidi, Alaa N. Aldelfee","doi":"10.31185/ejuow.vol9.iss2.283","DOIUrl":"https://doi.org/10.31185/ejuow.vol9.iss2.283","url":null,"abstract":"The essential factor that must get the interest by the engineers during the primary design stage of underground pipes is understanding mechanism of damage during earthquakes. The attention during design period increased due to the increment of seismic catastrophes throughout the few past decades. Therefore, finite element procedure was used for studying the seismic performance of buried pipes. PLAXIS-2D program was using for simulating the seismic performance of buried pipes using earthquake motion of single frequency. The response of both seismic vertical displacement, and acceleration of the buried pipe were simulated. The experiments of shaking table for two models of buried pipe in dry case that surrounded with sand and gravel were compared with numerical simulation results. According to the obtained results, the amplification of seismic wave raised considerably from the buried pipe base to the pipe crown, the biggest amplification occurred in the highest point of the pipe model. It can be noticed that Plaxis-2D software provides an accurate method for the prediction of seismic behaviour of buried pipe due to the obvious compatibility between the results of experiments and numerical simulation.","PeriodicalId":184256,"journal":{"name":"Wasit Journal of Engineering Sciences","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125769320","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