Engineering Proceedings最新文献_第5页

Performance Investigation of Novel Improved Cooking Stove Model for Cold Rural Populations 农村寒冷地区新型改进型炉灶的性能研究

Engineering Proceedings Pub Date : 2022-01-21 DOI: 10.3390/engproc2021012086

Ahmad Ayaz, Jamsheed Sajid, Naveed Ahmed

引用次数: 0

An Improved Control Strategy for Single-Phase Single-Stage Grid-Tied PV System Based on Incremental Conductance MPPT, Modified PQ Theory, and Hysteresis Current Control 基于增量电导MPPT、修正PQ理论和磁滞电流控制的单相单级并网光伏系统改进控制策略

Engineering Proceedings Pub Date : 2022-01-21 DOI: 10.3390/engproc2021012091

Nur Fairuz Mohamed Yusof, D. Ishak, Mohamed Salem

{"title":"An Improved Control Strategy for Single-Phase Single-Stage Grid-Tied PV System Based on Incremental Conductance MPPT, Modified PQ Theory, and Hysteresis Current Control","authors":"Nur Fairuz Mohamed Yusof, D. Ishak, Mohamed Salem","doi":"10.3390/engproc2021012091","DOIUrl":"https://doi.org/10.3390/engproc2021012091","url":null,"abstract":"In this paper, a modified variable step Incremental Conductance (VS-InCond) algorithm integrated with modified pq theory and double-band hysteresis current control (PQ-DBHCC) is proposed for the implementation on a single-stage single-phase grid-tied photovoltaic (PV) inverter system. As the single-phase inverter in a grid-tied PV system receives varying DC voltage from PV modules, the PQ-DBHCC strategy is deployed to regulate the ac output voltage along with its capability to deliver the maximum power during onload conditions. VS-InCond algorithm and DC-link capacitor are used as the interface between the PV modules and the inverter for tracking maximum power point. Furthermore, the PQ-DBHCC strategy also controls active and reactive power between inverter, load, and grid. The simulation results obtained from MATLAB Simulink software show that PQ-DBHCC strategy is capable of achieving the desired fixed DC voltage at inverter input and maintaining the maximum power point tracking, even under varying environmental conditions and load variations. The inverter ac output has a steady 230 Vrms at 50 Hz frequency. The total harmonic distortions (THDs) of output ac current and ac voltage are observed to be less than 5%, as recommended in IEEE 519 standard. Additionally, during full load conditions, the proposed system successfully delivers 95% of the theoretical maximum power from PV modules.","PeriodicalId":11748,"journal":{"name":"Engineering Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83057828","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: 3

Experimental Study on the Particle Flow and Validation of the Results Using TIS Model in a Continuously Operated Horizontal Fluidized Bed 卧式连续流化床颗粒流动的实验研究及TIS模型结果的验证

Engineering Proceedings Pub Date : 2022-01-21 DOI: 10.3390/engproc2021012080

Asad Ali, Ghulam Abbas, Khurram Shahzad Ayub, A. Imran, L. Ali, Muhammad Zaid

引用次数: 0

Using the OpenSky ADS-B Data to Estimate Aircraft Emissions 使用OpenSky ADS-B数据估算飞机排放

Engineering Proceedings Pub Date : 2022-01-21 DOI: 10.3390/engproc2021013011

A. Filippone, N. Bojdo, Shreya Mehta, B. Parkes

引用次数: 1

ZnO and TiO2 Assisted Photocatalytic Degradation of Butachlor in Aqueous Solution under Visible Light ZnO和TiO2在可见光下辅助光催化降解水溶液中的丁草胺

Engineering Proceedings Pub Date : 2022-01-20 DOI: 10.3390/engproc2021012077

M. Ahmad, Ghulam Abbas, M. Tanveer, M. Zubair

引用次数: 3

Design and Development of an Electric Remote-Controlled Road-Sweeper Vehicle 电动遥控扫路车的设计与研制

Engineering Proceedings Pub Date : 2022-01-18 DOI: 10.3390/engproc2021012089

Sunil Jamil, Talha Mukhtar, Rana Hamas Ali, Irfan Qaiser, Burhan Ahmed

引用次数: 0

Characterization and Performance Analysis of Non-Metallic Oxide Nano-Fluids in Compound Parabolic Trough Solar Collectors 复合抛物面槽太阳能集热器中非金属氧化物纳米流体的表征及性能分析

Engineering Proceedings Pub Date : 2022-01-18 DOI: 10.3390/engproc2021012088

M. Kaleem, Muzaffar Ali, H. Riaz, J. Akhter

{"title":"Characterization and Performance Analysis of Non-Metallic Oxide Nano-Fluids in Compound Parabolic Trough Solar Collectors","authors":"M. Kaleem, Muzaffar Ali, H. Riaz, J. Akhter","doi":"10.3390/engproc2021012088","DOIUrl":"https://doi.org/10.3390/engproc2021012088","url":null,"abstract":"Solar energy is a viable source to fulfill the energy demands of a solar rich country such as Pakistan. Various types of solar thermal technologies are being used around the world, including flat plate, evacuated tube, and compound parabolic trough collectors. However, the performance of these collectors is strongly influenced by the nature of work fluid. Utilization of nanofluids with high thermal conductivity is a very attractive way to further enhance the performance of solar collectors. Therefore, this study deals with the characterization and thermal performance enhancement of compound parabolic collectors (CPC) by using non-metallic nanofluids such as water-based multi-wall carbon nano tubes (H2O-MWCNT) with a thermal conductivity of 3000 W/m·K. In the current work, multiple tests are performed to analyze the thermal conductivity and stability of nanofluids through thermal analyzer and UV-Vis Spectroscopy, respectively. Test results show that the thermal conductivity of water-based MWCNT nanofluid is 37% higher than water at a concentration of 0.075%. Prepared nanofluids are then employed in CPC, and detailed experimentation is performed by varying the concentration of nanoparticles (0.025, 0.05, 0.075%) and their flow rate (0.015, 0.02 kg/s). Maximum temperature difference of 10.5oC with volumetric concentration of 0.075% is achieved in experimental analysis at flow rate 0.015 kg/s. Thermal efficiency enhancement of 19.37% with volumetric concentration 0.075% is recorded as compared to water at flow rate 0.015 kg/s.","PeriodicalId":11748,"journal":{"name":"Engineering Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78255646","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: 2

Comparative Optical and Thermal Analysis of Compound Parabolic Solar Collector with Fixed and Variable Concentration Ratio 固定和变聚光比复合抛物面太阳能集热器的光学和热对比分析

Engineering Proceedings Pub Date : 2022-01-18 DOI: 10.3390/engproc2021012085

H. Riaz, Muzaffar Ali, J. Akhtar, R. Muhammad, M. Kaleem

{"title":"Comparative Optical and Thermal Analysis of Compound Parabolic Solar Collector with Fixed and Variable Concentration Ratio","authors":"H. Riaz, Muzaffar Ali, J. Akhtar, R. Muhammad, M. Kaleem","doi":"10.3390/engproc2021012085","DOIUrl":"https://doi.org/10.3390/engproc2021012085","url":null,"abstract":"Solar thermal collectors, such as flat plate and evacuated tube collectors, are used for maximum of 60–80 °C temperature and parabolic trough collectors are used for 700–900 °C temperature ranges. It is needed to develop and analyze solar collectors, such as compound parabolic collectors (CPC) which can operate in an intermediate temperature range from 50–300 °C for industrial and domestic applications. However, optical and thermal performance of CPC is strongly influenced by concentration ratio. The current study presents a comparative optical and thermal analysis of CPC with fixed (4) and variable (4.5 to 5.7) concentration ratio by using model-based transient simulation approach. Two profiles of compound parabolic collector are analyzed with fixed and variable concentration ratio for the subtropical climate of Taxila, Pakistan. 2D profiles of both collectors are modeled and designed in MATLAB and are then analyzed optically by using Monte Carlo ray tracing technique through TracePro. In addition, thermal analysis of both profiles is also performed through ANSYS. The resulting optical efficiencies with fixed and variable concentration are 72% and 79%, respectively. Whereas maximum temperature achieved with both profiles is 352 K and 367 K, respectively. Thus, it is concluded that performance of CPC with variable concentration ratio is much better compared to fixed value.","PeriodicalId":11748,"journal":{"name":"Engineering Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84471061","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: 2

Model Development and Transient Seasonal Performance Analysis of a Solar Space Heating System under Climate Conditions of PAKISTAN 巴基斯坦气候条件下太阳能空间供暖系统模型开发及瞬态季节性能分析

Engineering Proceedings Pub Date : 2022-01-18 DOI: 10.3390/engproc2021012084

M. Arsalan, Muzaffar Ali, Rubeena Kousar

{"title":"Model Development and Transient Seasonal Performance Analysis of a Solar Space Heating System under Climate Conditions of PAKISTAN","authors":"M. Arsalan, Muzaffar Ali, Rubeena Kousar","doi":"10.3390/engproc2021012084","DOIUrl":"https://doi.org/10.3390/engproc2021012084","url":null,"abstract":"The model-based transient system simulation approach is very effective for a performance assessment of solar systems under various climate conditions. In the current study, a hybrid array of flat and evacuated tube collector was analyzed for space heating using a panel radiator for a room with a volume of 1600 ft3 at different flow rates. A detailed model is developed in TRNSYS that consists of a hybrid collector array, storage tank and pumping device along with a building load component. Using transient simulation, the performance of the hybrid solar space heating system was analyzed from December to February for the subtropical climate of Taxila, Pakistan. The results revealed that at flow rates of 350, 450 and 550 kg/h, the range of temperature gain of the hybrid collector array vary from 2.8to 15.4 °C, 1.7 to 11.6 °C and 1.2 to 9.2 °C from December to February, respectively, whereas the variation in efficiencies are 25.2 to 70.4%, 22 to 70.2% and 18.4 to 68.1% for December, January and February, respectively. In addition, it is observed that about 5.29 and 7.97% better seasonal efficiency is achieved for flow rate 350 kg/h as compared to 450 and 550 kg/h. The resulted room temperature varies from 22.3 to 26.8 °C, 22.2 to 27 °C and 22.4 °C to 30 °C for December, January and February to ensure desired thermal comfort. Overall, the results show that solar heating systems are viable to achieve the thermal comfort in winter and thus can significantly reduce gas consumption in the country.","PeriodicalId":11748,"journal":{"name":"Engineering Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89078273","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 Analysis of the Dew Point Indirect Evaporative Cooler Operating with Solar Panels 露点间接蒸发冷却器太阳能板运行的实验分析

Engineering Proceedings Pub Date : 2022-01-18 DOI: 10.3390/engproc2021012090

Sabir Rasheed, Muzaffar Ali, Hassan Ali, N. Sheikh

{"title":"Experimental Analysis of the Dew Point Indirect Evaporative Cooler Operating with Solar Panels","authors":"Sabir Rasheed, Muzaffar Ali, Hassan Ali, N. Sheikh","doi":"10.3390/engproc2021012090","DOIUrl":"https://doi.org/10.3390/engproc2021012090","url":null,"abstract":"Indirect evaporative cooling can meaningfully improve the natural environment. It involves low operating costs for air cooling systems. The dew point indirect evaporative cooler (DP-IEC) is energy-efficient, ecological, and economical. The current study reports on an experimental analysis of a DP-IEC working under a wide range of operating conditions and integrated with a solar panel system. The electricity consumption of the DP-IEC can be met by utilizing renewable energy technology (solar panels). The system is designed for a cooling capacity of up to 3 kW, with an energy efficiency ratio of about 20. The experimental setup is investigated here in terms of velocity, water temperature, ambient air temperature, and air humidity. The temperature is dropped from 43 °C to 23 °C (i.e., 20 °C temperature drop) at 20% humidity and from 49 °C to 24 °C (i.e., 25 °C temperature drop) at 13% humidity at a fixed air velocity and water temperature. The cooling capacity, coefficient of performance, and energy efficiency ratio values vary across the ranges of 1612–3215 W, 2.93–5.85, and 9.21–18.37, respectively. The DP-IEC is integrated with solar panels to offset the electricity consumption. This research work also shows that the DP-IEC, when integrated with renewable energy technology (i.e., solar panels), provides energy savings as compared with air conditioners. As such, it is suitable for use in several areas around the world.","PeriodicalId":11748,"journal":{"name":"Engineering Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84617321","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: 2