Results 161 to 170 of about 6,081 (269)
Stability Criteria of Reversible Pump Turbines
, 2014 The objective in this Master's Thesis was to verify the stability criteria for a centrifugal pump. Operation of an unstable pump may lead to either exponential or oscillatory unstable behavior of both pressure and volume flow of the water in the conduit system. This is of course unwanted, and fulfilling the stability criteria is desirable.
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MODELING OF HYDRO-PNEUMATIC ENERGY STORAGE USING PUMP TURBINES
, 2011 Modelling of a hydro-pneumatic energy storage system is the main aim of this paper. The project aims to model a prototype that uses a rotodynamic multi-stage pump-turbine to displace a virtual liquid piston for air compression. A dynamic model of the storage system is developed using the block diagram methodology.
Ortego, Egoï +4 more
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A Call to Industry: Unearthing Synergies in Subsurface Storage Technologies
Greenhouse Gases: Science and Technology, EarlyView.ABSTRACT Subsurface storage technologies (SSTs), including geological CO2 sequestration, underground hydrogen storage, compressed‑air energy storage and thermal energy storage, are emerging as a scalable route for industry to achieve the terawatt‑hour storage flexibility and permanent carbon removal that evolving energy systems demand.
Julien Mouli‐Castillo +2 more
wiley +1 more source
Erratum for “Optimization of Pump Turbines” [PDF]
Journal of the Energy Division, 1982 openaire +1 more source
HIV Medicine, EarlyView.Abstract Aim This study compared acute psychological responses to a single session of low‐volume high‐intensity interval exercise (HIIE‐LV), high‐volume high‐intensity interval exercise (HIIE‐HV), and moderate‐intensity continuous exercise (MICE) in people living with HIV, and healthy controls using a randomized, counterbalanced crossover design ...
Phelipe Wilde +9 more
wiley +1 more source
Journal of Product Innovation Management, EarlyView.ABSTRACT Academic Summary Despite the urgent need for a circular economy, firms' transition from linear to circular business models (CBMs) remains slow. While previous research suggests that dynamic capabilities are the key drivers of this transition, it assumes a direct link, overlooking that these capabilities can facilitate change but do not ...
Jörn Block +4 more
wiley +1 more source
Influence of Chronotype on Cycling Performance in Simulated 20‐km Time Trials—A Pilot Study
Journal of Sleep Research, EarlyView.Evening‐type athletes show improved cycling performance later in the day, whilst morning types peak earlier. These differences appear linked to variations in mental readiness and sleepiness, highlighting the importance of considering chronotype in performance planning.
Sabrina Forster +6 more
wiley +1 more source
Review of Water Supply, Treatment and Distribution: Overcoming Challenges for Sustainable Management
Water and Environment Journal, EarlyView.ABSTRACT Water management faces increasing challenges driven by population growth, accelerated urbanization and climate change, demanding integrated and sustainable approaches to ensure the preservation of water resources. Water scarcity and rising demand intensify the vulnerability of various regions, threatening both water supply and environmental ...
André Linneo Tocchetto +5 more
wiley +1 more source
Turbopumps for cryogenic upper stage engines [PDF]
Small, high-performance LO2 and LH2 turbopump assembly configurations were selected, detail designs were prepared and two of each unit were fabricated with each unit consisting of pump, turbine gas generator, and appropriate controls.
Csomor, A. +2 more
core +1 more source
Study on Reverse Running Pump Turbine.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1999 Hitoshi SHINHAMA +5 more
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