Results 71 to 80 of about 46,180 (274)

Brayton Module Development Overview [PDF]

, 1984
The Advanced Gas Turbine (AGT) and the Subatmospheric Brayton Cycle (SABC) engines are under development. The AGT is developed for automotive applications while the SABC is developed for a gas fired heat pump application.
Holbeck, H. J.
core   +1 more source

Solar Energy in 2025: Global Deployment, Cost Trends, and the Role of Energy Storage in Enabling a Resilient Smart Energy Infrastructure

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This paper explores global solar PV deployment, cost trends, and grid integration challenges in 2025. It examines the role of energy storage in firming solar output and supporting electric vehicle (EV) growth, alongside policy shifts, investment flows, and technological innovations.
Ehsan Rezaee, S. Ravi P. Silva
wiley   +1 more source

Decentralized Wind Energy Systems as Catalysts for Urban Resilience: A Design Framework

Energy Science &Engineering, EarlyView.
ABSTRACT Confronting the escalating extreme weather events (EWEs) and intensifying winds, this study proposes an active response to these issues by exploring decentralized wind energy production for Peng Chau Island, Hong Kong. It integrates theoretical perspectives on energy democracy—empowering local communities through energy autonomy—and urban ...
Tian Cheng
wiley   +1 more source

Optimal Design of a Micro Reversible Pump Turbine for Balancing Generation Mode and Storage Mode

Energy Science & Engineering
The inefficiency of traditional micro horizontal pump units (double‐suction centrifugal pumps) when operating in reverse mode as water turbines has hindered their application in pumped storage systems.
Tengjiao Guo, Jiale Pan, Ran Tao, Ruofu Xiao   +3 more
doaj   +1 more source

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

Dual-fuel, dual-mode rocket engine [PDF]

, 1989
The invention relates to a dual fuel, dual mode rocket engine designed to improve the performance of earth-to-orbit vehicles. For any vehicle that operates from the earth's surface to earth orbit, it is advantageous to use two different fuels during its ...
Martin, James A.
core   +1 more source

Comparative Numerical Studies for the Flow Energy Dissipation Features in a Vertical Two‐Stage Centrifugal Pump in Pump and Turbine Conditions

Energy Science &Engineering, EarlyView.
Based on entropy theory, this study presents a comparative numerical analysis of the flow energy dissipation (FED) in a VTSP under two distinct operating conditions: pump condition and turbine condition, both characterized by relatively high hydraulic efficiencies of 88.9% and 87.4%, respectively. In pump condition, the highest FED production occurs in
S. Liu, T. P. Chen, Y. Li, M. Q. Liang, Y. J. Zhang, X. Z. Wei   +5 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

Small hydraulic turbine drives [PDF]

, 1970
Turbine, driven by the fluid being pumped, requires no external controls, is completely integrated into the flow system, and has bearings which utilize the main fluid for lubrication and cooling. Torque capabilities compare favorably with those developed
Rostafinski, W. A.
core   +1 more source

The Role of Digital Twin Technology in Enhancing Energy Efficiency in Buildings: A Systematic Literature Review

Energy Science &Engineering, EarlyView.
Digital Twin (DT) technology enhances building energy efficiency by enabling continuous monitoring, predictive maintenance, and operational optimization within Building Energy Management Systems. Through real‐time data integration and simulation, DTs provide dynamic feedback loops that optimize performance, reduce operational costs, and improve ...
Suqi Wang, Congxiang Tian, Chao Zhou, Yihan Wu, Divine Senanu Ametefe, Dah John, Marvellous Agbeko Ametefe   +6 more
wiley   +1 more source