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Progress in Alternative Fuels for Future Electrical Power System
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Progress in Alternative Fuels for Future Electrical Power System

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "I1: Fuel".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 4349

Special Issue Editor

Dr. Guohui Song

E-Mail Website
Guest Editor
School of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing, China
Interests: biomass gasification and biofuel synthesis; energy and exergy analyses; environmental and economic assessments; natural gas or hydrogen combined cycle; large-scale energy storage

Special Issue Information

Dear Colleagues,

Decarbonization is becoming a higher priority for energy utilization and environmental sustainability. The power sector currently accounts for a large share of global CO2 emissions and is undergoing a swift transition to renewable power generation worldwide. One of the challenges of decarbonizing the power sector is sufficiently reducing greenhouse gas emissions while guaranteeing reliability, security, and affordability. Low-carbon alternative fuels, e.g., hydrogen, bio-methane, bio-methanol, ammonia, etc., can play crucial roles in the future power sector.

This Special Issue will deal with investigations on production, storage, and utilization technologies of various alternative fuels in power sector and their assessments. Studies on emerging methods and applications relevant to integration, monitoring, and control of energy system are also highly expected as they can strongly accelerate the commercialization of these alternative fuels. Topics of interest for publication include, but are not limited to, the following:

  • alternative fuel production;
  • alternative fuel-based energy storage;
  • clean utilization technologies;
  • system integration, optimization, and control;
  • sustainability assessment

Dr. Guohui Song
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • thermochemical and anaerobic conversions
  • fuel synthesis
  • power and/or biomass to X
  • storage technologies
  • low-NOx combustion
  • coal and biomass co-combustion
  • combustion with blended hydrogen and/or ammonia
  • hydrogen fueled gas turbine
  • hybrid energy systems
  • new modelling and simulation approaches
  • novel sensors and monitoring
  • modern artificial intelligence methods
  • energy or exergy analysis
  • greenhouse gas emission
  • decarbonization analysis
  • economic evaluation and policy

Published Papers (2 papers)

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Research

13 pages, 3567 KiB  
Article
Techno-Economic Assessment of High-Safety and Cost-Effective Syngas Produced by O2-Enriched Air Gasification with 40–70% O2 Purity
by Siwen Zhang, Haiming Gu, Jing Qian, Wioletta Raróg-Pilecka, Yuan Wang, Qijing Wu and Hao Zhao
Energies 2023, 16(8), 3414; https://doi.org/10.3390/en16083414 - 13 Apr 2023
Viewed by 1312
Abstract
To strike a better balance between gas quality and production cost of biomass-based syngas, a process for high-safety and cost-effective syngas production is designed and studied, which takes advantage of biomass O2-enriched air gasification with 40–70% O2 purity and methanation [...] Read more.
To strike a better balance between gas quality and production cost of biomass-based syngas, a process for high-safety and cost-effective syngas production is designed and studied, which takes advantage of biomass O2-enriched air gasification with 40–70% O2 purity and methanation synthesis. Based on the simulation data, the process is evaluated from techno-economic aspects, including syngas composition, higher heat value (HHV), upper and lower explosive limits (UEL and LEL), toxicity, unit production cost (UPC) and levelized cost of energy (LCOE). Five kinds of biomass are studied as feedstock. The effects of O2 purity, methanation pressure, feedstock cost, and plant scale are determined, respectively. The results show that O2 purity is an important parameter for technical performance, while methanation pressure is a minor parameter except for exergy efficiency. With respect to cost indicators, feedstock cost, and plant scale are crucial variables; by contrast, O2 purity plays a relatively minor role. This process can generate non-toxic syngas containing 33.2–34.9 vol.% CH4. The UEL and LEL are about 34% and 12%, and the average explosive range is about 22%. The HHVs of syngas generated from five kinds of feedstock sit between 13.67–14.33 MJ/m3, and the exergy efficiency achieves 68.68%. The UPC varies between 0.05 $/Nm3 and 0.27 $/Nm3, and the LCOE varies between 3.78 $/GJ and 18.28 $/GJ. When the plant scale is rational, the process shows strong competitiveness in either UPC or LCOE. The techno-economic results demonstrate that the studied process offers an alternative and sustainable pathway to supply gaseous fuel for low-income areas. Full article
(This article belongs to the Special Issue Progress in Alternative Fuels for Future Electrical Power System)
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14 pages, 1704 KiB  
Article
Life Cycle Assessment of Greenhouse Gas (GHG) and NOx Emissions of Power-to-H2-to-Power Technology Integrated with Hydrogen-Fueled Gas Turbine
by Guohui Song, Qi Zhao, Baohua Shao, Hao Zhao, Hongyan Wang and Wenyi Tan
Energies 2023, 16(2), 977; https://doi.org/10.3390/en16020977 - 15 Jan 2023
Cited by 4 | Viewed by 2625
Abstract
Hydrogen is expected to play an important role in renewable power storage and the decarbonization of the power sector. In order to clarify the environmental impacts of power regenerated through hydrogen-fueled gas turbines, this work details a life cycle model of the greenhouse [...] Read more.
Hydrogen is expected to play an important role in renewable power storage and the decarbonization of the power sector. In order to clarify the environmental impacts of power regenerated through hydrogen-fueled gas turbines, this work details a life cycle model of the greenhouse gas (GHG) and NOx emissions of the power regenerated by power-to-H2-to-power (PHP) technology integrated with a combined cycle gas turbine (CCGT). This work evaluates the influences of several variables on the life cycle of GHG and NOx emissions, including renewable power sources, hydrogen production efficiency, net CCGT efficiency, equivalent operating hours (EOH), and plant scale. The results show that renewable power sources, net CCGT efficiency, and hydrogen production efficiency are the dominant variables, while EOH and plant scale are the minor factors. The results point out the direction for performance improvement in the future. This work also quantifies the life cycle of GHG and NOx emissions of power regenerated under current and future scenarios. For hydro, photovoltaic (PV) and wind power, the life cycle of the GHG emissions of regenerated power varies from 8.8 to 366.1 gCO2e/kWh and that of NOx emissions varies from 0.06 to 2.29 g/kWh. The power regenerated from hydro and wind power always has significant advantages over coal and gas power in terms of GHG and NOx emissions. The power regenerated from PV power has a small advantage over gas power in terms of GHG emissions, but does not have advantages regarding NOx emissions. Preference should be given to storing hydro and wind power, followed by PV power. For biomass power with or without CO2 capture and storage (CCS), the life cycle of the GHG emissions of regenerated power ranges from 555.2 to 653.5 and from −2385.0 to −1814.4, respectively, in gCO2e/kWh; meanwhile, the life cycle of NOx emissions ranges from 1.61 to 4.65 g/kWh, being greater than that of coal and gas power. Biomass power with CCS is the only power resource that can achieve a negative life cycle for GHG emissions. This work reveals that hydrogen-fueled gas turbines are an important, environmentally friendly technology. It also helps in decision making for grid operation and management. Full article
(This article belongs to the Special Issue Progress in Alternative Fuels for Future Electrical Power System)
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