Optimal design and energy management of a renewable energy plant with seasonal energy storage

The exploitation of fossil fuels is undoubtedly responsible of environmental problems such as global warming and sea level rise. Unlike energy plants based on fossil fuels, energy plants based on renewable energy sources may be sustainable and reduce greenhouse gas emissions. However, they are unpredictable because of the intermittent nature of environmental conditions. For this reason, energy storage technologies are needed to meet peak energy demands thanks to the stored energy. Moreover, the renewable energy systems composing the plant must be optimally designed and operated. Therefore, this paper investigates the challenge of the optimal design and energy management of a grid connected renewable energy plant composed of a solar thermal collector, photovoltaic system, ground source heat pump, battery, one short-term thermal energy storage and one seasonal thermal energy storage. To this aim, this paper develops a methodology based on a genetic algorithm that optimally designs a 100% renewable energy plant with the aim of minimizing the electrical energy taken from the grid. The load profiles of thermal, cooling and electrical energy during a whole year are taken into account for the case study of the Campus of the University of Parma (Italy).

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Thermodynamic Analysis of a Hybrid Electrical Energy Storage System Integrating High Temperature Thermal Energy Storage and Compressed Air Energy Storage for Mitigating Renewable Energy Curtailment

Energy Technology ◽

10.1002/ente.202100293 ◽

2021 ◽

Author(s):

Ruifeng Cao ◽

Xiaowei Cong ◽

Hexi Ni

Keyword(s):

Renewable Energy ◽

High Temperature ◽

Energy Storage ◽

Thermal Energy ◽

Thermal Energy Storage ◽

Storage System ◽

Electrical Energy ◽

Energy Storage System ◽

Compressed Air ◽

Electrical Energy Storage

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Self-Sufficiency and Energy Savings of Renewable Thermal Energy Systems for an Energy-Sharing Community

Energies ◽

10.3390/en14144284 ◽

2021 ◽

Vol 14 (14) ◽

pp. 4284

Author(s):

Min-Hwi Kim ◽

Youngsub An ◽

Hong-Jin Joo ◽

Dong-Won Lee ◽

Jae-Ho Yun

Keyword(s):

Renewable Energy ◽

Energy Storage ◽

Thermal Energy ◽

Thermal Energy Storage ◽

Energy Systems ◽

Hot Water ◽

Pump System ◽

Ground Source Heat Pumps ◽

Self Sufficiency ◽

Energy Sharing

Due to increased grid problems caused by renewable energy systems being used to realize zero energy buildings and communities, the importance of energy sharing and self-sufficiency of renewable energy also increased. In this study, the energy performance of an energy-sharing community was investigated to improve its energy efficiency and renewable energy self-sufficiency. For a case study, a smart village was selected via detailed simulation. In this study, the thermal energy for cooling, heating, and domestic hot water was produced by ground source heat pumps, which were integrated with thermal energy storage (TES) with solar energy systems. We observed that the ST system integrated with TES showed higher self-sufficiency with grid interaction than the PV and PVT systems. This was due to the heat pump system being connected to thermal energy storage, which was operated as an energy storage system. Consequently, we also found that the ST system had a lower operating energy, CO2 emissions, and operating costs compared with the PV and PVT systems.

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Thermal energy storage (TES) technology for active and passive cooling in buildings: A Review

MATEC Web of Conferences ◽

10.1051/matecconf/201822503022 ◽

2018 ◽

Vol 225 ◽

pp. 03022

Author(s):

Nursyazwani Abdul Aziz ◽

Nasrul Amri Mohd Amin ◽

Mohd Shukry Abd Majid ◽

Izzudin Zaman

Keyword(s):

Energy Storage ◽

Energy Management ◽

Thermal Energy ◽

Thermal Energy Storage ◽

Energy Demand ◽

Supply And Demand ◽

Storage System ◽

Passive Cooling ◽

Building Sector ◽

Advantages And Disadvantages

Thermal energy storage (TES) system is one of the outstanding technologies available contributes for achieving sustainable energy demand. The energy storage system has been proven capable of narrowing down the energy mismatch between energy supply and demand. The thermal energy storage (TES) - buildings integration is expected to minimize the energy demand shortage and also offers for better energy management in building sector. This paper presents a state of art of the active and passive TES technologies integrated in the building sector. The integration method, advantages and disadvantages of both techniques were discussed. The TES for low energy building is inevitably needed. This study prescribes that the integration of TES system for both active and passive cooling techniques are proven to be beneficial towards a better energy management in buildings.

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The Capacity Optimization of Wind-Photovoltaic-Thermal Energy Storage Hybrid Power System

E3S Web of Conferences ◽

10.1051/e3sconf/201911802054 ◽

2019 ◽

Vol 118 ◽

pp. 02054

Author(s):

Jingli Li ◽

Wannian Qi ◽

Jun Yang ◽

Yi He ◽

Jingru Luo ◽

...

Keyword(s):

Renewable Energy ◽

Energy Storage ◽

Power System ◽

Thermal Energy ◽

Thermal Energy Storage ◽

Electric Heater ◽

Transmission Channel ◽

Capacity Optimization ◽

Hybrid Power System ◽

Hybrid Power

This paper proposes a Wind-Photovoltaic-Thermal Energy Storage hybrid power system with an electric heater. The proposed system consists of wind subsystem, photovoltaic subsystem, electric heater, thermal energy storage and steam turbine unit. The electric heater is used to convert the redundant electricity from wind or photovoltaic subsystem into heat, which is stored in thermal energy storage. When the system output is less than the load demand, thermal energy storage system releases heat to generate electricity. In this paper, the optimal objective is to minimize the levelized cost of energy and maximize the utilization rates of renewable energy and transmission channel. The fitness function is compiled according to the scheduling strategy, and the capacity optimization problem is solved by particle swarm optimization algorithm in MATLAB. The case analysis show that the proposed system can effectively increase the utilization rate of renewable energy and transmission channel.

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