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Wyświetlanie 1-4 z 4
Tytuł:
Technical and economic study of the energy transition from natural gas to green hydrogen in thermal power plants
Autorzy:
Moulebe, Laince Pierre
Touati, Abdelwahed
Obar, Akpoviroro Eric
Belbsir, Oumayma
Rabbah, Nabila
Powiązania:
https://bibliotekanauki.pl/articles/27323589.pdf
Data publikacji:
2023
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
green hydrogen
thermal power plant
combustion
zielony wodór
elektrociepłownia
spalanie
Opis:
This research article contributes to the challenge of global warming by presenting the approach of the use of green hydrogen to reduce greenhouse gases. It shows that CO2 emissions can be significantly reduced in thermal power plants by replacing natural gas with green hydrogen as a fuel. This work presents the techno-economic study of the energy transition of a 12 MW thermal power plant based on green hydrogen. The presented study is based on the energy consumption of Nigeria, 73% of which is covered by natural gas thermal power plants. The obtained results show that the cost of this transition is ca. 17 million dollars (USD) for a reduction of 114 tCO2 per plant with a return on investment between 4-5 years. In addition, through modeling and numerical simulation, this article shows that estimated return on investment can be shortened by using the thermal power resulting from the turbine, through industrial use.
Źródło:
Acta Innovations; 2023, 49; 49--59
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomass delignification with green solvents towards lignin valorisation: ionic liquids vs deep eutectic solvents
Autorzy:
da Costa Lopes, André M.
Powiązania:
https://bibliotekanauki.pl/articles/2142897.pdf
Data publikacji:
2021
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
lignin
lignocellulosic biomass
green solvent
biomass delignification
valorisation
lignina
biomasa lignocelulozowa
zielony rozpuszczalnik
waloryzacja
Opis:
The use of renewable resources as feedstocks to ensure the production of goods and commodities for society has been explored in the last decades to switch off the overexploited and pollutant fossil-based economy. Today there is a strong movement to set bioeconomy as priority, but there are still challenges and technical limitations that must be overcome in the first place, particularly on biomass fractionation. For biomass to be an appellative raw material, an efficient and sustainable separation of its major components must be achieved. On the other hand, the technology development for biomass valorisation must follow green chemistry practices towards eco-friendly processes, otherwise no environmental leverage over traditional petrochemical technologies will be acquired. In this context, the application of green solvents, such as ionic liquids (ILs) and deep eutectic solvents (DES), in biomass fractionation is envisaged as promising technology that encompasses not only efficiency and environmental benefits, but also selectivity, which is a crucial demand to undertake cascade processes at biorefinery level. In particular, this article briefly discusses the disruptive achievements upon the application of ILs and DES in biomass delignification step towards an effective and selective separation of lignin from polysaccharides. The different physicochemical properties of these solvents, their interactions with lignin and their delignification capacity will be scrutinized, while some highlights will be given to the important characteristics of isolated lignin fractions for further valorisation. The advantages and disadvantages between ILs and DES in biomass delignification will be contrasted as well along the article.
Źródło:
Acta Innovations; 2021, 40; 64-78
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on performance of a green hydrogen production system integrated with the thermally activated cooling
Autorzy:
Moulebe, Laince Pierre
Touati, Abdelwahed
Obar, Akpoviroro Eric
Rabbah, Nabila
Powiązania:
https://bibliotekanauki.pl/articles/2201974.pdf
Data publikacji:
2023
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
thermal energy
green hydrogen
trigeneration
energy transition
cooling
energia termiczna
zielony wodór
trigeneracja
transformacja energetyczna
chłodzenie
Opis:
The energy transition is at the centre of research and development activities with the aim to fight against the effects of global warming. Today, renewable energies play a significant role in the electricity supply to the World and their use increases day after day. Because of the intermittency of a large-scale production system generates the need to develop clean energy storage systems. Hence, energy storage systems play is one of key elements in the energy transition. In this perspective, a green hydrogen is defined as an energy carrier thanks to its high energy density in relation to its negligible mass, not to mention its abundance in our environment, and its extraction, which does not contribute to any greenhouse gases. However, the production cost is not negligible. Hence, this work shows a numerical modelling of the heat balance from a green hydrogen production system using a thermal storage in a Metal Hydride (MH) tank for an electrification by Proton Exchange Membrane (PEM) fuel cell integrated into the production of heating, cooling and sanitary hot water (SHW) through the recovery of the heat released by the whole system combined with the technology of thermally activated cooling of an adsorber. This allows demonstrating that the green hydrogen can be an interesting solution according in the hydrogen production chain and in the tertiary sectors.
Źródło:
Acta Innovations; 2023, 47; 5--19
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation and design of an energy accumulator around the hydrogen energy vector
Autorzy:
Moulebe, Laince Pierre
Touati, Abdelwahed
Obar, Eric Akpoviroro
Rabbah, Nabila
Powiązania:
https://bibliotekanauki.pl/articles/2201972.pdf
Data publikacji:
2023
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
energy storage
thermal energy
green hydrogen
trigeneration
energy transition
magazynowanie energii
energia cieplna
zielony wodór
trigeneracja
transformacja energetyczna
Opis:
This work demonstrates the study of the numerical modelling and a design of a compact energy generator based on green hydrogen. This generator aims allowing the energy storage, electricity, cold and heat productions as well as a supply the energy for the production of the sanitary hot water. The generator is considered to be powered by 30 solar cells panels and will mainly consist of a Proton Exchange Membrane (PEM) electrolyzer compiled with a Metal Hydride (MH) tank, a PEM fuel cell, and a system of heat exchangers sized to recover the heat from the electrolyzer, PEM fuel cell and MH tank. Furthermore, the generator will contain an adsorber to manage air conditioning (cooling and heating) and a production of the sanitary hot water. A converter block is included in the generator, in particular, a Buck-booster to raise the voltage of the solar panels and the DC-AC converter for the electricity consumption in the household. The desorption of the hydrogen contained in the tank MH will take place using the heating resistance. In overall, the designed generator is foreseen to have a dimension of 1800 × 1000 × 500 mm and its role is to allow integration of the hydrogen energy for the tertiary and residential sectors. As such it is a suitable choice of components for the cost reduction and high yield hydrogen production, storage, and consumption.
Źródło:
Acta Innovations; 2023, 46; 66--79
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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