Results 81 to 90 of about 1,253,627 (291)

ALLIEVI as a Tool for Simulating Hydraulic Transients in Energy Recovery Systems

Engineering Proceedings
ALLIEVI is a software developed by the Universitat Politècnica de València to model and analyze hydraulic transients in pressurized water systems. ALLIEVI allows for the modeling of valve and pump maneuvers, including pressure reducing valves (VRPs) and ...
Roberto del Teso, Elena Gómez, Elvira Estruch-Juan, Javier Soriano   +3 more
doaj   +1 more source

Rotating shaft seal Patent [PDF]

, 1969
Liquid-vapor interface seal design for turbine rotating shafts including helical and molecular pumps and liquid cooling of mercury ...
Bosco, G. B., Jr., Lessley, R. L.
core   +1 more source

Techno-economic projections for advanced small solar thermal electric power plants to years 1990-2000 [PDF]

, 1978
Advanced technologies applicable to solar thermal electric power systems in the 1990-200 time-frame are delineated for power applications that fulfill a wide spectrum of small power needs with primary emphasis on power ratings less than 10MWe ...
Chen, K. H., El-Gabalawi, N., Fujita, T., Herrera, G., Kuo, T. J., Manvi, R., Roschke, E. J.   +6 more
core   +2 more sources

Structural design and 3D printing of flexible integrated electronic systems

FlexMat, EarlyView.
This review provides a comprehensive overview of design and integration strategies for individual components in flexible electronics, highlights the 3D‐printing fabrication techniques, and discusses recent advances in system‐level integration and their applications in real‐time monitoring and intelligent robotics.
Jiani Gong, Jiaying Wang, Changsong Shi, Chi Guo, Songze Fu, Jie Tao, Xiaolong Chen, Yunfei Chen, Zhiyang Lyu   +8 more
wiley   +1 more source

Research on the performance of pump-turbine during the transition process from pump mode to turbine mode

Frontiers in Energy Research
In current engineering, the transition process of pump turbines from pump to turbine mode mainly includes the shutdown process of pump operating and the startup process of turbine operating, and the switching of working conditions mostly depends on the ...
Zhe Man, Zhe Xu, Zhonghua Gui, Wenfu Han, Yifeng Zhao, Fei Zhang, Lianchen Xu, Yuan Zheng, Yuan Zheng, Kan Kan, Kan Kan   +10 more
doaj   +1 more source

Comprehensive experimental and numerical analysis of instability phenomena in pump turbines

, 2014
The changes in the electricity market have led to changed requirements for the operation of pump turbines. Utilities need to change fast and frequently between pumping and generating modes and increasingly want to operate at off-design conditions for ...
C. Gentner, M. Sallaberger, C. Widmer, B. J. Bobach, H. Jaberg, J. Schiffer, F. Senn, M. Guggenberger   +7 more
semanticscholar   +1 more source

A Detailed Review of Colburn and Friction Factors for Various Types of Fins Used in Compact Plate‐Fin Heat Exchangers

Heat Transfer, EarlyView.
ABSTRACT Compact plate‐fin heat exchangers (PFHEs) are commonly utilized in diverse industries, including aerospace, automotive, processing, and space. Various fin configurations, such as Plain fins, Wavy fins, Lance and Offset fins (OSFs), Perforated fins, louvered fins, and pin fins, are employed in compact heat exchangers (CHEs).
Chennu Ranganayakulu
wiley   +1 more source

Characterization of non-intentional emissions from distributed energy resources up to 500 kHz: A case study in Spain [PDF]

, 2019
Narrow Band Power Line Communications (NB-PLC) systems are currently used for smart metering and power quality monitoring as a part of the Smart Grid (SG) concept.
Angulo, I., Arrinda, A., Arzuaga, T., de la Vega, D., Eizmendi, I., Fernandez, I., Uribe-Pérez, N.   +6 more
core   +2 more sources

Advanced Functional Materials for Marine Energy Utilization

Interdisciplinary Materials, EarlyView.
Marine renewable energy is an important future clean energy supply. We construct and sort out the material system for marine energy capture and conversion, transmission, storage, and utilization for the first time. ABSTRACT Several features of marine energy, including large reserves, sustainable utilization, environmental friendliness, make it a ...
Qiang Yu, Peipei Ge, Fazhou Wang, Shichao Bi, Bo Tang, Ion Tiginyanu, Kenneth I. Ozoemena, Xiao‐Yu Yang   +7 more
wiley   +1 more source

Energy Balance and Local Unsteady Loss Analysis of Flows in a Low Specific Speed Model Pump-Turbine in the Positive Slope Region on the Pump Performance Curve

Energies, 2019
The positive slope on the pump performance curve of pump-turbines suggests potential operational instabilities in pump mode. Previous research has indicated that the increase of the hydraulic loss caused by sudden changes of flow patterns in pump ...
Guocheng Lu, Zhigang Zuo, Demin Liu, Shuhong Liu   +3 more
doaj   +1 more source