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Book ; Online: Advances in Underground Energy Storage for Renewable Energy Sources

Loredo, Jorge / Menéndez, Javier

2021

Keywords	Research & information: general ; Technology: general issues ; energy storage ; underground pumped storage ; economic feasibility ; ancillary services ; day-ahead market ; underground space ; mining structures ; underground reservoir ; empirical analysis ; numerical modelling ; hydropower plants ; hydrogen ; underground storage ; leakage ; monitoring ; protocol ; helium ; aquifer ; renewable energy ; hydropower ; mine ; groundwater ; environmental impacts ; efficiency ; wind energy ; photovoltaics ; wind curtailment ; mesoscale atmospheric model ; hydro-pumped storage ; abandoned mines ; underground reservoirs ; CAES ; analytical modelling ; sealing layer ; environmental impact ; hydrogen storage ; sealing liners ; Liner Rock Caverns ; epoxy resin ; hydrogen permeability ; exergy ; salt caverns ; pumped storage hydropower ; energy storage system ; quarry ; open pit ; hydrochemistry ; n/a
Size	1 electronic resource (183 pages)
Publisher	MDPI - Multidisciplinary Digital Publishing Institute
Publishing place	Basel, Switzerland
Document type	Book ; Online
Note	English ; Open Access
HBZ-ID	HT021290248
ISBN	9783036518794 ; 3036518797
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Article ; Online: Numerical modelling of water subsurface reservoirs during the operation phase in underground pumped storage hydropower plants

Menéndez Javier / Loredo Jorge

E3S Web of Conferences, Vol 152, p

2020 Volume 02001

Abstract: Underground pumped storage hydropower (UPSH) plants may be an alternative to store subsurface energy with lower environmental impacts than conventional pumped storage hydropower (PSH) plants. Network of tunnels in closed mines (i.e. coal mines) could be ... ...

Abstract	Underground pumped storage hydropower (UPSH) plants may be an alternative to store subsurface energy with lower environmental impacts than conventional pumped storage hydropower (PSH) plants. Network of tunnels in closed mines (i.e. coal mines) could be used as water lower reservoir of UPSH plants. The amount of storable energy depends on the water mass and the net head between upper and lower reservoirs. Depending on the direction of the water flow rate, pumping or turbine modes may be used to produce or consume electrical energy. Filling and emptying processes during the operation stage in the underground reservoir are complicated due to the presence of two fluids (water and air) interacting inside the network of tunnels. This paper explores the underground reservoir during the operation stage considering a water flow rate of 55 m3s-1. Two-phase three dimensional CFD numerical models using Ansys Fluent have been developed in order to know the behaviour of the air flow on tunnels and ventilation shaft. Static pressure and air velocity have been analyzed in the simulations at the exit of the ventilation shaft as well as the junction zone between the ventilation shaft and the tunnels network. The results obtained show that a static pressure up to 8,600 Pa and air velocities up to 80 m s-1 could be reached in turbine mode considering a vent shaft with 1 m in diameter. The static pressure increases up to 258,000 Pa if a ventilation shaft of 0.5 m in diameter is considered.
Keywords	Environmental sciences ; GE1-350
Subject code	690
Language	English
Publishing date	2020-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: An economic assessment of lignocellulosic biomass power plants

Menéndez Javier / Loredo Jorge

E3S Web of Conferences, Vol 191, p

2020 Volume 02003

Abstract: In 2016, electricity generation from solid biomass increased by 0.7 Mtoe in EU, compared with 2015, to 10.3 Mtoe (119.78 TWh), a 7.6% growth rate. Solid biomass may be used for: i) heating & cooling and hot water for domestic uses, ii) heating for ... ...

Abstract	In 2016, electricity generation from solid biomass increased by 0.7 Mtoe in EU, compared with 2015, to 10.3 Mtoe (119.78 TWh), a 7.6% growth rate. Solid biomass may be used for: i) heating & cooling and hot water for domestic uses, ii) heating for industrial processes and iii) power generation. Unlike other renewable energy sources (RES), such as wind and solar photovoltaic (intermittent energy sources), solid biomass power plants provide dispatchable energy when needed. Therefore, the security of supply could also be increased. In addition, the use of solid biomass has significant advantages, such as the creation of jobs related to the power plant and collection of raw material used to produce energy. In this paper, an economic assessment of forest biomass power plants is carried out in the Iberian electricity system. According to current Spanish electrical regulation, in which three economic parameters are considered as income (day-ahead market, operation and investment), an economic model has been developed for the regulatory useful life (25 years). Investment costs for biomass power plants of 15, 30 and 50 MWe have been estimated. Operation & Maintenance and fuel costs, considering different prices of wet biomass (50-60 € t-1) with a moisture content of 40% and a lower calorific value of 2.8 MWh t-1 on average, have also been considered in the economic model. Net Present Value (NPV), Internal Rate of Return (IRR) and payback period have been obtained in all scenarios. The results obtained show that a biomass power plant with a power of 50 MWe may produce 337.5 GWh year-1of net electrical energy using 446.43 kt year-1 of wet biomass. Considering a price of electrical energy of 145 € MWh-1 and a woody biomass cost of 0.0178 € kWh-1, the NPV and IRR reach 165.6 M€ and 17.63%, respectively.
Keywords	Environmental sciences ; GE1-350
Subject code	620
Language	English
Publishing date	2020-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Sustainable Application of Waste Sludges from the Wastewater Treatment Plant Generated during the Production of Heating Devices in the Construction Industry.

Stojmenović, Marija / Gulicovski, Jelena / Nišić, Neda / Ristić, Nenad / Liu, Shanke / Loredo, Jorge / Kragović, Milan

Materials (Basel, Switzerland)

2024 Volume 17, Issue 5

Abstract: This research presented, for the first time, the results of the successful application of the waste press sludges, WSLP (plant for lacquer and paint) and WSEP (powdery enamel plant), from a wastewater treatment plant generated during heating device ... ...

Abstract	This research presented, for the first time, the results of the successful application of the waste press sludges, WSLP (plant for lacquer and paint) and WSEP (powdery enamel plant), from a wastewater treatment plant generated during heating device production in the construction industry. The results of WSEP characterization and its influence on cement paste, mortar, and concrete properties showed that this material could be used as a cement replacement (with a maximum replacement amount of 20%) in producing mortar and concrete. Although waste WSLP sludge does not possess pozzolanic properties and does not meet the criteria prescribed by the standards for application in mortar and concrete due to its chemical inertness and fineness, as well as its extended setting time, it can be used as a replacement for stone filler or other powdered mineral admixture in the production of self-compacting concrete (SCC) in amounts up to 100%, with a maximum quantity of up to 100 kg/m
Language	English
Publishing date	2024-02-27
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma17051089
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Low-enthalpy Geothermal Energy Potential of Mine Water from Closured Underground Coal Mines in Northern Spain

Menéndez Javier / Loredo Jorge

E3S Web of Conferences, Vol 103, p

2019 Volume 02007

Abstract: The contribution of renewable energies to the world's total energy demand has increased particularly during the last decades, and they will continue gaining market share. The European energy and climate policies have as one of their targets 20% of final ... ...

Abstract	The contribution of renewable energies to the world's total energy demand has increased particularly during the last decades, and they will continue gaining market share. The European energy and climate policies have as one of their targets 20% of final energy from renewable origin by 2020. Underground coal mines closured and flooded constitute large underground reservoirs that can be economically managed to supply geothermal energy (heating and cooling) by means of heat pumps. This paper analyzes the geothermal potential of the water stored inside the coal mines of the Asturian Central Coal Basin (ACCB) and the reduction of CO2 emissions compared to the use of fossil fuels. The results of the study that has been carried out show a capacity of 50 MWt. The potential for generation thermal energy is 112,000 MWh/year with an electric consumption of 14,000 MWh/year. The Coefficient Of Performance (COP) medium is 8 kWht/kWhe. The reduction of CO2 emissions compared to other fuel sources can reach 80%.
Keywords	Environmental sciences ; GE1-350
Subject code	690
Language	English
Publishing date	2019-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Economic feasibility of developing large scale solar photovoltaic power plants in Spain

Menéndez Javier / Loredo Jorge

E3S Web of Conferences, Vol 122, p

2019 Volume 02004

Abstract: In 2017, electricity generation from renewable sources contributed more than one quarter (30.7%) to total EU-28 gross electricity consumption. Wind power is for the first time the most important source, followed closely by hydro power. The growth in ... ...

Abstract	In 2017, electricity generation from renewable sources contributed more than one quarter (30.7%) to total EU-28 gross electricity consumption. Wind power is for the first time the most important source, followed closely by hydro power. The growth in electricity from photovoltaic energy has been dramatic, rising from just 3.8 TWh in 2007, reaching a level of 119.5 TWh in 2017. Over this period, the contribution of photovoltaic energy to all electricity generated in the EU-28 from renewable energy sources increased from 0.7% to 12.3%. During this period the investment cost of a photovoltaic power plant has decreased considerably. Fundamentally, the cost of solar panels and inverters has decreased by more than 50%. The solar photovoltaic energy potential depends on two parameters: global solar irradiation and photovoltaic panel efficiency. The average solar irradiation in Spain is 1,600 kWh m-2. This paper analyzes the economic feasibility of developing large scale solar photovoltaic power plants in Spain. Equivalent hours between 800-1,800 h year-1 and output power between 100-400 MW have been considered. The profitability analysis has been carried out considering different prices of the electricity produced in the daily market (50-60 € MWh-1). Net Present Value (NPV) and Internal Rate of Return (IRR) were estimated for all scenarios analyzed. A solar PV power plant with 400 MW of power and 1,800 h year-1, reaches a NPV of 196 M€ and the IRR is 11.01%.
Keywords	Environmental sciences ; GE1-350
Subject code	690
Language	English
Publishing date	2019-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Use of closured open pit and underground coal mines for energy generation

Menéndez Javier / Loredo Jorge

E3S Web of Conferences, Vol 80, p

Application to the Asturias Central Coal Basin (Spain)

2019 Volume 01005

Abstract: The idea to reducing the dependency of nuclear and fossil energy sources has risen in Spain, then, the use of closured coal mines for energy generation is thus in the political interest, and by 2020 it is intended that the country produces 20% of its ... ...

Abstract	The idea to reducing the dependency of nuclear and fossil energy sources has risen in Spain, then, the use of closured coal mines for energy generation is thus in the political interest, and by 2020 it is intended that the country produces 20% of its energy from renewable sources, therefore replacing the energy based on fossil fuels. New studies on the framework of a circular economy have led to found new possibilities for closured coal mines in historical mine districts and mine water can be considered as a potential resource, converting mining exploitations into storage and production facilities of renewable energy and generating new economic activities in the mining regions. Abandoned and flooded mines constitute artificial karst type aquifers, and these created underground reservoirs can be economically managed to supply geothermal energy to villages around the shafts. This potential application of mine water, profitable in both economic and environmental terms, could contribute to improve economic and social conditions of traditional mining areas in gradual decline. On the other hand, the restored lands can be used for the production of biofuels through repopulation with fast-growing energy crops and high planting densities. This paper analyses the uses of mine water for energy generation both as geothermal resource and through pumped storage between an underground and a surface reservoir, furthermore the supply of productive restoration for biomass production in closured coal open pits is considered, in relation to their potential application to the closured coal mines from the Asturias Central Coal basin in Northern Spain.
Keywords	Environmental sciences ; GE1-350
Subject code	670
Language	English
Publishing date	2019-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Comparing Subsurface Energy Storage Systems

Menéndez Javier / Schmidt Falko / Loredo Jorge

E3S Web of Conferences, Vol 162, p

Underground Pumped Storage Hydropower, Compressed Air Energy Storage and Suspended Weight Gravity Energy Storage

2020 Volume 01001

Abstract: In the current energy context, intermittent and non-dispatchable renewable energy sources, such as wind and solar photovoltaic (generation does not necessarily correspond to demand), require flexible solutions to store energy. Energy storage systems (ESS) ...

Abstract	In the current energy context, intermittent and non-dispatchable renewable energy sources, such as wind and solar photovoltaic (generation does not necessarily correspond to demand), require flexible solutions to store energy. Energy storage systems (ESS) are able to balance the intermittent and volatile generation outputs of variable renewable energies (VRE). ESS provide ancillary services such as: frequency, primary and voltage control to the power grid. In order to fulfil the power system control, ESS can switch within seconds for different operation modes. Many times, ESS imply environment impacts on landscape and society. To solve this problem, disused underground spaces, such as closed mines, can be used as underground reservoir for energy storage plants. In this paper, a comparative analysis between underground pumped storage hydropower (UPSH), compressed air energy storage (CAES) and suspended weight gravity energy storage (SWGES) with suspended weights in abandoned mine shafts is carried out. Pumped storage hydropower (PSH) is the most mature concept and account for 99% of bulk storage capacity worldwide. The results obtained show that in UPSH and CAES plants, the amount of stored energy depends mainly on the underground reservoir capacity, while in SWGES plants depends on the depth of the mine shafts and the mass. The energy stored in a SWGES plant (3.81 MWh cycle-1 with 600 m of usable depth assuming 3,000 tonne suspended weight) is much lower than UPSH and CAES plants.
Keywords	Environmental sciences ; GE1-350
Subject code	690
Language	English
Publishing date	2020-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Heavy metal concentrations and dispersion in wild mussels along the Asturias coastline (North of Spain)

Sanz-Prada, Lorena / Garcia-Ordiales, Efrén / Roqueñí, Nieves / Manuel Rico, Jose / Loredo, Jorge

Ecological indicators. 2022 Feb., v. 135

2022

Abstract: Several international organisations have recommended the use of bioindicators to improve the evaluation of ecological risk in marine ecosystems. In this context, wild mussels, a recognised bioindicator, were collected from thirty sampling points along ... ...

Abstract	Several international organisations have recommended the use of bioindicators to improve the evaluation of ecological risk in marine ecosystems. In this context, wild mussels, a recognised bioindicator, were collected from thirty sampling points along the Asturias coastline and studied in order to identify any relationship between metal(oid) concentrations in wild mussel tissues and the geological and environmental conditions of the coastal area via biochemical analyses. Two main concentration trends were observed: Concentrations of As, Cd, Cr, Ni, Pb and Zn slightly decrease from the western to the eastern areas of the region, while the opposite occurred for Fe, Hg and Se whose concentrations increased from the westernmost part of Asturias to the east. Correlations between the elements showed how essential metals for organisms such as Fe, Ni and Cr have good correspondences among them but not with other metal(oid)s. On the other hand, Cd, Hg, Se and Zn were found to be correlated with each other, suggesting the presence of the mussels’ natural bio-defence against Cd and Hg. In addition, samples were also grouped by a cluster analysis based on their element concentrations, showing two independent groups. Group 1 was associated with the sampling sites whose concentrations were related to anthropic sources, while mussel concentrations in Group 2 were attributed to natural sources. This last group was divided into two subgroups based on the lithology of the dominant geological materials of each area. Both geological and anthropic sources have caused an increase in the metal loads of mussels which at times surpassed international environmental criteria.
Keywords	cluster analysis ; coasts ; heavy metals ; lithology ; mussels ; risk ; Spain
Language	English
Dates of publication	2022-02
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2036774-0
ISSN	1872-7034 ; 1470-160X
ISSN (online)	1872-7034
ISSN	1470-160X
DOI	10.1016/j.ecolind.2021.108526
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Characterization of Laciana Valley District mine water as geothermal resource

Matas Alejandro / García-Carro Francisco / Loredo Jorge

E3S Web of Conferences, Vol 51, p

2018 Volume 01003

Abstract: Laciana Valley District is a coal mining region located in northern Spain. This region counts with several mining facilities, among them: eight underground mines (six mountain mines and two mine shafts) and three open pit mines. Nowadays, all the mining ... ...

Abstract	Laciana Valley District is a coal mining region located in northern Spain. This region counts with several mining facilities, among them: eight underground mines (six mountain mines and two mine shafts) and three open pit mines. Nowadays, all the mining facilities have been closed down and are flooded. The water found inside them could be used as a geothermal resource due to its thermal properties and the proximity to population. The aim of the study is to analyze the water of the facilities located in Laciana Valley and determine its potential to be used as a geothermal resource for a district heating system. In order to achieve this goal an extensive field work has been performed, nine different mine water discharges have been chosen and several water characteristics have been selected for analysis. The parameters measured have been pH, conductivity, hardness, temperature, turbidity and alkalinity. The results have been evaluated in order to determine the fluctuations of the physico-chemical parameters throughout a hydrological year and the mining facilities have been compared between each other regarding their mine water quality. The analysis of all the information gathered in the study shows a noteworthy thermal potential in the water of the abandoned mines of the region.
Keywords	Environmental sciences ; GE1-350
Subject code	550
Language	English
Publishing date	2018-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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