Meihui Li’s research while affiliated with University of Washington and other places

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Publications (9)


Figure 1. NGPG evolution based on the technological paradigm.
Figure 3. A typical CCHP system with HRSG.
Figure 4. The Kuhn Cycle.
Figure 5. NG-Biomass hybrid power systems.
Figure 6. Carbon pricing mechanism.
Natural Gas Power Generation Trends from a Technological Paradigm Perspective
  • Article
  • Full-text available

June 2020

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544 Reads

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2 Citations

Journal of Physics Conference Series

Na Luo

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Meihui Li

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Xueying Yu

Natural gas power generation is a clean, environmentally friendly use of fossil fuel. However, natural gas development has strong competition from renewable energy and at the same time, the environmental impact of methane leakages during natural gas exploitation and transportation has raised concerns as to its overall safety. Through the research of literature, this paper finds that NGPG has experienced three stages: natural gas direct combustion, combined cycle generation, and distributed generation, that is, natural gas power generation technology paradigm. At the same time, hybrid power generation is due for a paradigm shift which will ensure that natural gas development is more competitive in the future; however, for this to happen, adequate policy support is required.

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Figure 1. Global distribution of NGVs and fueling stations.
Fig. 2 shows the changes in the number of NGVs and gas fueling stations in five states from 1996 to 2019. It can be found that the Asia Pacific region gradually began to surpass Latin America after 2004. The research shows that the main reason for the rapid development of NGVs in the Asia Pacific region is that the government has formulated and implemented a series of incentives [9]. There are also reasons to save crude oil for export. Iran, for example, has seen rapid development of NGVs since 2004 [10].
Figure 3. DAS and literature mining.
Figure 4. Country cooperation and affiliations.
Figure 5. Countries are ranked according to centrality.
Research Hotspots and Trends of Natural Gas Vehicles: A Visual Analysis Using CiteSpace

June 2020

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196 Reads

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4 Citations

Journal of Physics Conference Series

Driven by the optimization of energy structure, environmental pollution control and climate change constraints, natural gas vehicles have high development potential. As a vehicle fuel, natural gas has many advantages, such as abundant reserves, excellent fuel economy and relatively less pollutants, which makes the development of natural gas vehicles more rapid. This paper uses the data analysis system (DAS) composed of Web of Science (WOS) and CiteSpace to sort out the related literature of natural gas vehicles. Through the visual analysis of 529 documents, the research hotspots and trends of natural gas vehicles from 1990 to now are found. Three important clusters are discussed in this paper, among which the future development direction of natural gas vehicles is hybrid gas-electric vehicles, in order to provide reference for the R&D and production activities of natural gas vehicles.


Transport biofuels technological paradigm based conversion approaches towards a bio-electric energy framework

September 2018

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27 Reads

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38 Citations

Energy Conversion and Management

The continuing dependence on fossil fuels and the rising energy use in the transport sector have resulted in increased research into viable transport biofuels to mitigate climate change and improve energy security. As transport biofuels now only have a small share of the transport sector energy supply and the complexity in providing the fuels because of issues related to available land and food security, this paper develops conversion path solutions for transport biofuel development based on a technological paradigm study. A data-driven approaches system (DAS) that combines visualization analyses with technological paradigm theory is proposed to reveal the key areas and trends in transport biofuels. Timeline, timezones, and cluster visualizations identified the transport biofuel technological paradigm (TBTP) from current transport biofuel developments; a pre-shift phase (including TBTP competition and TBTP diffusion) and a shift phase (TBTP shift), which respectively relate to conventional biofuels, advanced biofuels, and biofuel cells. However, from further DAS trend analyses and the practical findings, electric energy trends were revealed, indicating that there was a paradigm shift from the biofuel paradigm to a bio-electric energy paradigm. From the developed bio-electric energy framework, both indirect and direct methods were found to have led to an this electric energy conversion to an e-bio fuel cell vehicle for fuel cell electric vehicles (FCEV) and bioelectricity for electric vehicles (EV), both of which can contribute to a low-carbon, sustainable transportation future.



A novel paradigm-oriented approach towards NG-RE hybrid power generation

August 2017

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46 Reads

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9 Citations

Energy Conversion and Management

In the face of climate change and possible future energy shortages, the installed capacity of clean energy natural gas (NG) and renewable energy (RE) for power generation has gradually increased. However, in the traditional electricity market, there is significant competition between NG and RE as gas prices tend to be volatile, and RE power generation from wind and solar can be intermittent and somewhat unreliable, indicating that these power sources have some drawbacks if used to independently generate electricity; therefore, determining the balance of NG and RE to ensure are resilient, reliable, flexible and affordable power generation system is an important goal. Based on the data analysis system (DAS) combined with paradigm theory, this paper examines the possibility of hybrid power generation in the future. The results of literature analysis visualization show that NG or RE has its own power generation paradigm, and a paradigm shift towards hybrid NG-RE power generation was found, so NG-RE power generation paradigm (NGREP) was proposed. To determine whether these NG-RE hybrid energy developments could be more competitive than separate developments, a comparative analysis was conducted, from which it was found that hybrid NG-RE systems are more attractive in some cases. However, as there are still challenges in the developments of these systems, a driving force is needed to promote further hybrid developments. Using hybrid power generation in areas with plentiful wind, solar and gas can maximize energy use efficiency and significantly reduce carbon emissions and other pollutants.


Biomass Energy Technological Paradigm (BETP): Trends in This Sector

April 2017

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1,730 Reads

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54 Citations

Sustainability

Renewable energy plays a significant role in the world for obvious environmental and economic reasons with respect to the increasing energy crisis and fossil fuel environmental problems. Biomass energy, one of the most promising renewable energy technologies, has drawn increasing attention in recent years. However, biomass technologies still vary without an integrated framework. Considering the theory of a technological paradigm and implementing a literature analysis, biomass technological development was found to follow a three-stage technological paradigm, which can be divided into: BETP (biomass energy technological paradigm) competition, BETP diffusion, and BETP shift. Further, the literature review indicates that waste, like municipal solid waste (MSW), has the potential to be an important future trend in the world and waste-to-energy (WTE) is designed for sustainable waste management. Among WTE, anaerobic digestion has the potential to produce energy from waste sustainably, safely, and cost-effectively. The new BETP technological framework proposed in this paper may offer new research ideas and provide a significant reference for scholars.


Innovative technological paradigm-based approach towards biofuel feedstock

April 2016

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47 Reads

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22 Citations

Energy Conversion and Management

Biofuels produced from renewable energy biomass are playing a more significant role because of the environmental problems resulting from the use of fossil fuels. However, a major problem with biofuel production is that despite the range of feedstock that can be used, raw material availability varies considerably. By combining a series of theories and methods, the research objective of this study is to determine the current developments and the future trends in biofuel feedstock. By combining technological paradigm theory with literature mining, it was found that biofuel feedstock production development followed a three-stage trajectory, which was in accordance with the traditional technological paradigm - the S-curve. This new curve can be divided into BFDP (biofuel feedstock development paradigm) competition, BFDP diffusion, and BFDP shift. The biofuel production diffusion velocity model showed that there has been constant growth from 2000, with the growth rate reaching a peak in 2008, after which time it began to drop. Biofuel production worldwide is expected to remain unchanged until 2030 when a paradigm shift is expected. This study also illustrates the results of our innovative procedure - a combination of the data analysis system and the technological paradigm theory - for the present biofuel feedstock soft path that will lead to this paradigm shift, with integrated biofuel production feedstock systems expected to be a significant new trend.


Feedstock for Bioethanol Production from a Technological Paradigm Perspective

July 2015

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425 Reads

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12 Citations

BioResources

Because of the impending energy crisis and the environmental problems caused by the excessive use of fossil fuels, biofuels produced from renewable energy biomass have been playing a more significant role in the world. This follows from their obvious environmental and economic advantages. Bioethanol, the most widely used transportation biofuel, is typically derived from plant-based feedstock sources such wheat, sugar beet, corn, straw, and wood. However, the main problem with bioethanol production is that despite the range of feedstock, raw material availability varies considerably from season to season, as there is no systematic framework. By combining technological paradigm theory with literature mining, we found that bioethanol feedstock production development has followed a three-stage trajectory, which is in accordance with the traditional technological paradigm - the S-curve. This new curve can be divided into BFDP (bioethanol feedstock development paradigm) competition, BFDP diffusion, and BFDP shift. Each phase has a different generation of feedstock; first-generation bioethanol in BFDP competition, second-generation bioethanol in BFDP diffusion, and third-generation bioethanol in BFDP shift. Further, based on the technological support, literature mining, and a realistic background, the second-generation bioethanol (mainly lignocellulosic biomass) is expected to continue to be a significant future trend in the world. The new BFDP framework presented in this paper may provide scholars with research ideas for the future.


Geothermal energy utilization trends from a technological paradigm perspective

May 2015

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127 Reads

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62 Citations

Renewable Energy

The use of geothermal energy and its associated technologies has been increasing worldwide. However, there has been little paradigmatic research conducted in this area. This paper proposes a systematic methodology to research the development trends for the sustainable development of geothermal energy. A novel data analysis system was created to research the geothermal energy utilization trends, and a technological paradigm theory was adopted to explain the technological changes. A diffusion velocity model was used to simulate and forecast the geothermal power generation development in the diffusion phase. Simulation results showed that the development of installed capacity for geothermal generation had a strong inertia force along with the S-curve. Power generation from geothermal power sources reached a peak in 2008 and is estimated to be saturated by 2030. Geothermal energy technologies in hybrid power systems based on other renewable energy sources look to be more promising in the future.

Citations (9)


... Furthermore, the cluster view is transformed into a timeline view to study the evolution of these research topics. As to research hotspots in the field of marine pollution in the three sampled regional seas, keyword co-occurrence analysis of the related research groups was conducted, then a cluster analysis and keyword burst detection of the visualized network was undertaken (Luo et al., 2020). Learning from the cluster view and burst keywords, research hotspots of marine pollution in the three prominent regional seas are located. ...

Reference:

Visualized Quantitative Research or Marine Pollution in the South China Sea
Research Hotspots and Trends of Natural Gas Vehicles: A Visual Analysis Using CiteSpace

Journal of Physics Conference Series

... Collectively, these three countries account for 41% of the electricity generated using natural gas as the primary source (Hafezi et al., 2021;Luo et al., 2020;Tolmasquim, 2016;Yang et al., 2021). The aforementioned three countries have already overcome their barriers in developing natural gas power plants to enjoy electricity and other advantages from this source at a competitive cost (Hashimoto, 2021;Wu, 2019). ...

Natural Gas Power Generation Trends from a Technological Paradigm Perspective

Journal of Physics Conference Series

... Energy simulation studies comparing different window types have consistently demonstrated the superior energy-saving performance of algae windows. Additionally, economic analyses suggest that algae building technologies, such as closed tubular photobioreactors, offer favorable returns on investment compared to traditional solar PV systems [7]. Martin Kerner et al. [8] claimed that the whole year's heat production efficiency is nearly 38%, which can meet about 59% of the total heat demand of a building. ...

Transport biofuels technological paradigm based conversion approaches towards a bio-electric energy framework
  • Citing Article
  • September 2018

Energy Conversion and Management

... Coal is one of the most important energy sources in the world, accounting for about 27.6% of the total primary energy consumption [1,2], and the lifeblood of China's national economy [3]. Coking coal is a scarce high-quality coal resource and an important raw material for the steel and chemical industries and plays a huge role in China's economic development. ...

Integrated tech-paradigm based innovative approach towards ecological coal mining
  • Citing Article
  • February 2018

Energy

... In order to expand the scale of renewable energy generation, the design of hybrid power generation systems for multi-source energy harvesting (i.e. thermal, hydrodynamic and mechanical energy) has attracted more and more attention [7][8][9]. ...

A novel paradigm-oriented approach towards NG-RE hybrid power generation
  • Citing Article
  • August 2017

Energy Conversion and Management

... In recent years, increasing attention has been paid to green and renewable energy sources, which should not only replace the bulk of today's energy sources but also preserve the environment, thus reducing greenhouse gas (GHG) emissions [1][2][3][4]. The main sources of energy are still non-renewable, obtained from fossil fuels-coal, oil and oil derivatives, natural gas, and nuclear energy. ...

Biomass Energy Technological Paradigm (BETP): Trends in This Sector

Sustainability

... Biofuels like bioethanol have emerged as a promising alternative to fossil fuels (Thangaraj et al. 2024). Produced from renewable resources, bioethanol has attracted significant attention for its potential to lower greenhouse gas emissions, support sustainable energy production, and reduce dependence on non-renewable fossil fuels (Asase et al. 2024;Xu and Li 2017;Chen et al. 2015;Su et al. 2015). However, current bioethanol production methods largely rely on food crops such as corn and sugarcane, which raises concerns about food security and competition for agricultural resources. ...

Innovative technological paradigm-based approach towards biofuel feedstock
  • Citing Article
  • April 2016

Energy Conversion and Management

... Использование изобутанола в качестве добавки к бензину поможет решить текущие проблемы, с которыми сталкиваются люди, такие как истощение ископаемых ресурсов и парниковый эффект [1][2][3][4][5]9]. ...

Feedstock for Bioethanol Production from a Technological Paradigm Perspective

BioResources

... Due to the development of industrialization and the resulting large-scale population, the energy shortages and environmental pollution are two major issues that deserve attention in today's world [1][2][3][4][5][6][7][8][9][10]. Pyroelectrocatalytic research is a very active and frontier field involving the processes that utilize light energy to facilitate chemical reactions [11][12][13][14][15][16][17][18][19][20][21]. ...

Geothermal energy utilization trends from a technological paradigm perspective
  • Citing Article
  • May 2015

Renewable Energy