Power Engineering and Engineering Thermophysics最新文献_第2页

Effects of Fit Clearance and Viscosity of Lubricating Oil on Shaft Center Orbit of Camshaft 润滑油配合间隙和粘度对凸轮轴中心轨迹的影响

Power Engineering and Engineering Thermophysics Pub Date : 2023-03-30 DOI: 10.56578/peet020104

Zishan Zhang, Yu Wang

引用次数: 0

Engine Exhaust Stub Sizing for Turboprop Powered Aircraft 涡轮螺旋桨飞机发动机排气短管尺寸

Power Engineering and Engineering Thermophysics Pub Date : 2023-03-30 DOI: 10.56578/peet020105

Chikkanayakanahalli Anand Vinay, Kumar Gottegere Narayanappa, Girdharababu Yepuri

引用次数: 0

A Semiconductor-Based Refrigeration System for Cooling of Water: Design, Construction, and Performance Tests 基于半导体的冷却水制冷系统:设计、构造和性能测试

Power Engineering and Engineering Thermophysics Pub Date : 2023-03-24 DOI: 10.56578/peet020102

T. O. Oni, S. J. Aliyu, B. Adaramola, O. Rominiyi

引用次数: 1

Influence of Cooling and Lubrication Parameters on Robot Bone Grinding Temperature and Prediction Modeling 冷却和润滑参数对机器人骨磨削温度的影响及预测建模

Power Engineering and Engineering Thermophysics Pub Date : 2023-03-24 DOI: 10.56578/peet020103

Heqiang Tian, Bin Tian, Debao Meng, Q. Xu, Xiaoqing Dang

引用次数: 0

Experimental Investigation on the Effect of TiO2 Nanoparticles Emulsion in Water on Emissions and Performance Characteristics of DI Diesel Engine 水中TiO2纳米颗粒乳液对直驱柴油机排放及性能影响的实验研究

Power Engineering and Engineering Thermophysics Pub Date : 2023-03-24 DOI: 10.56578/peet020101

Razieh Abbasgholi Rezaei

引用次数: 0

Parametric Analysis of Nonlinear Bi-Stable Piezoelectric Energy Harvester Based on Multi-Scale Method 基于多尺度法的非线性双稳态压电能量采集器参数分析

Power Engineering and Engineering Thermophysics Pub Date : 2022-10-31 DOI: 10.56578/peet010104

Dawei Man, Gaozheng Xu, Huaiming Xu, Dehe Xu

{"title":"Parametric Analysis of Nonlinear Bi-Stable Piezoelectric Energy Harvester Based on Multi-Scale Method","authors":"Dawei Man, Gaozheng Xu, Huaiming Xu, Dehe Xu","doi":"10.56578/peet010104","DOIUrl":"https://doi.org/10.56578/peet010104","url":null,"abstract":"Given the geometric nonlinearity of the piezoelectric cantilever beam, this study establishes a distributed parameter model of the nonlinear bi-stable cantilever piezoelectric energy harvester, following the generalized Hamilton variational principle. The analytical expressions of the dynamic response were obtained for the energy harvesting system using Galerkin modal decomposition and the multi-scale method. The investigation focuses on how the performance of the energy harvesting system is influenced by the gap distance between magnets, external excited amplitude, mechanical damping ratio and external load resistance. The calculation results were compared with those obtained neglecting the geometric nonlinearity of the beam. The results show that the system responses contain jump and multiple solutions. The consideration of the geometrical nonlinearity significantly amplified the peak displacement and peak output power of the intra-well and inter-well motions. There is an evident hardening effect of the inter-well motion frequency response curve. By reasonable adjusting the parameters, it is possible to improve the output power of the piezoelectric energy harvesting system and broaden the operating frequency of the system.","PeriodicalId":422845,"journal":{"name":"Power Engineering and Engineering Thermophysics","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127858005","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

Optimal Operation Control of Composite Ground Source Heat Pump System 复合地源热泵系统的最优运行控制

Power Engineering and Engineering Thermophysics Pub Date : 2022-10-31 DOI: 10.56578/peet010107

Liang Wang, Shudan Deng

引用次数: 0

Two-Phase Liquid-Solid Hydrodynamics of Inclined Fluidized Beds 倾斜流化床的两相液固流体力学

Power Engineering and Engineering Thermophysics Pub Date : 2022-10-31 DOI: 10.56578/peet010105

Huda Ridha, N. K. F. Al-Abboodi

引用次数: 1

Measuring Temperatures Generated by Air Plasma Technology 测量空气等离子体技术产生的温度

Power Engineering and Engineering Thermophysics Pub Date : 2022-10-31 DOI: 10.56578/peet010108

C. Fragassa, Marco Arru, F. Capelli, A. Pavlović, M. Gherardi

{"title":"Measuring Temperatures Generated by Air Plasma Technology","authors":"C. Fragassa, Marco Arru, F. Capelli, A. Pavlović, M. Gherardi","doi":"10.56578/peet010108","DOIUrl":"https://doi.org/10.56578/peet010108","url":null,"abstract":"The atmospheric pressure air plasma technology is based on the general principle of transforming the air into an ideal conductor of plasma energy thanks to the application of an electric potential difference able to ionize the molecules. Applying the principle to the human surgery, it comes to be possible to assure an energy transfer from plasma-generator devices to the human tissue in a relatively simple way: passing through the air, with exceptionally limited effects in terms of tissue heating. Such a condition is very useful to assure effective treatments in surgery: less thermal damage, fewer side effects on the patient. This is also what emerged during the use of innovative devices embedding the Airplasma® technology (by Otech Industry S.r.l.), where temperatures on human tissues were measured stably below 50°C. However, the profiles assumed by the temperature along the different electrodes during the operating conditions are rather unclear. This knowledge is essential to improve the efficiency of the electrodes (through their redesign in shapes and materials) as well as to reduce the invasiveness of surgical interventions. The present work had the purpose of characterizing the most common electrodes thanks to temperature measurements carried out by infrared sensors respect to different operating conditions. A simplified finite element model was also developed to support the optimal redesign of electrodes.","PeriodicalId":422845,"journal":{"name":"Power Engineering and Engineering Thermophysics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115020860","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

Energy Storage Capacity Optimization of Non-Grid-Connected Wind-Hydrogen Systems: From the Perspective of Hydrogen Production Features 非并网风氢系统储能容量优化:基于产氢特性的视角

Power Engineering and Engineering Thermophysics Pub Date : 2022-10-31 DOI: 10.56578/peet010106

Xinyu Zhang, Hua Li, Jikang Wang

{"title":"Energy Storage Capacity Optimization of Non-Grid-Connected Wind-Hydrogen Systems: From the Perspective of Hydrogen Production Features","authors":"Xinyu Zhang, Hua Li, Jikang Wang","doi":"10.56578/peet010106","DOIUrl":"https://doi.org/10.56578/peet010106","url":null,"abstract":"This paper intends to improve the hydrogen production efficiency of the electrolysis cells, fully utilize wind energy, and ensure the reliability of power supply. For this purpose, the authors put forward a capacity optimization configuration for non-grid-connected wind-hydrogen hybrid energy storage system, in view of the features of hydrogen production efficiency. The working interval of the electrolytic cell was optimized by analyzing the said features. Considering the features of battery charge/discharge, equipment capacity and power, the authors formulated the energy management strategy applicable to six working conditions, established the quantitative multi-objective function of system cost and reliability, and solved the optimization model by the fast non-dominant sorting genetic algorithm (NSGA)-II. In this way, the optimal combination of energy storage capacity was determined. Next, the wind velocity data of a pastoral area in Inner Mongolia was measured, and analyzed in details. The analysis results show that the electrolytic cell always operates in the optimal working area, and the optimized wind-hydrogen system is economic and reliable in power supply. The research provides a reference for practical engineering applications.","PeriodicalId":422845,"journal":{"name":"Power Engineering and Engineering Thermophysics","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121758044","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: 4