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Integration of Utility Distributed Energy Resource Management System and Aggregators for Evolving Distribution System Operators

open access: yesJournal of Modern Power Systems and Clean Energy, 2022
With the rapid integration of distributed energy resources (DERs), distribution utilities are faced with new and unprecedented issues. New challenges introduced by high penetration of DERs range from poor observability to overload and reverse power flow ...
Luka Strezoski   +3 more
doaj   +1 more source

Operation Optimization of Wind/Battery Storage/Alkaline Electrolyzer System Considering Dynamic Hydrogen Production Efficiency

open access: yesEnergies, 2023
Hydrogen energy is regarded as a key path to combat climate change and promote sustainable economic and social development. The fluctuation of renewable energy leads to frequent start/stop cycles in hydrogen electrolysis equipment.
Meng Niu   +6 more
doaj   +1 more source

Feasibility of Low Carbon Renewable Energy City Integrated with Hybrid Renewable Energy Systems

open access: yesEnergies, 2021
This study evaluated the energy saving potential of renewable energy generation systems based on integrated solar energy in an urban environment. The solar city concept was implemented using photovoltaic (PV) and solar thermal systems.
Min-Hwi Kim, Deuk-Won Kim, Dong-Won Lee
doaj   +1 more source

Ground Source and Sewage Water Source Heat Pump Systems for Block Heating and Cooling Network

open access: yesEnergies, 2021
The demand for district heating and cooling systems in block units with a heat pump that utilizes various unused energy sources for energy supply has been increasing.
Min-Hwi Kim   +4 more
doaj   +1 more source

Turbulence Model Comparative Study for Complex Phenomena in Supersonic Steam Ejectors with Double Choking Mode

open access: yesEntropy, 2022
Scholars usually ignore the non-equilibrium condensing effects in turbulence-model comparative studies on supersonic steam ejectors. In this study, a non-equilibrium condensation model considering real physical properties was coupled respectively with ...
Yiqiao Li   +4 more
doaj   +1 more source

Numerical Simulation of Vapor Dropwise Condensation Process and Droplet Growth Mode

open access: yesEnergies, 2023
Compared with film condensation, dropwise condensation based on droplet growth can significantly improve the condensing equipment’s water collection and thermal efficiency in the vapor condensate system.
Yali Guo   +4 more
doaj   +1 more source

The Effect of Different Pressure Conditions on Shock Waves in a Supersonic Steam Ejector

open access: yesEnergies, 2022
The complex flow phenomena in a three-dimensional supersonic steam ejector were simulated with a non-equilibrium condensation model including real physical properties in different pressure conditions.
Yiqiao Li   +4 more
doaj   +1 more source

Energy Performance Investigation of Bi-Directional Convergence Energy Prosumers for an Energy Sharing Community

open access: yesEnergies, 2021
Due to the wide-spread use of photovoltaic (PV) systems, interest regarding economic benefit and energy-sharing from surplus electricity has been raised. In this study, decentralized thermal and electric convergence energy prosumers for an energy-sharing
Min-Hwi Kim   +4 more
doaj   +1 more source

Developing a Data-Driven Micro-Credential framework to enhance Primary School Sustainability Programmes [PDF]

open access: yesE3S Web of Conferences
This study proposes the design of a micro-credential system aimed at helping primary schools track, measure, and improve sustainability practices, ultimately assisting them with their sustainability curriculum.
Barry Carrie Anne   +6 more
doaj   +1 more source

Experimental Analysis of Bi-Directional Heat Trading Operation Integrated with Heat Prosumers in Thermal Networks

open access: yesEnergies, 2021
District cooling and heating methods that can utilize highly efficient heat pumps and various unused new and renewable types of energy are required to achieve low carbon emissions and zero energy usage in buildings and community units.
Min-Hwi Kim   +3 more
doaj   +1 more source

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