Toward carbon neutrality: The transition of the coal industrial chain in China

Chen, Zhong; Dong, Fanli; Geng, Yong; Dong, Qiuxia

doi:10.3389/fenvs.2022.962257

Cited by 7 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Against the background of carbon neutrality, China's coal industry has entered a new stage, and many coal mines have been abandoned or closed due to safety, efficiency, and economic concerns [38]. Additionally, some coal mines have reached the end of their lifespan after decades of exploitation [15].…”

Section: Development Opportunities Derived From Mined Underground Spacementioning

confidence: 99%

A Two-Step Site Selection Concept for Underground Pumped Hydroelectric Energy Storage and Potential Estimation of Coal Mines in Henan Province

Chen

Hou

et al. 2023

Energies

View full text Add to dashboard Cite

In the context of carbon neutrality, the phase-out of coal from the energy structure has resulted in numerous old coal mines that possess abundant underground space resources suitable for underground pumped hydroelectric energy storage (UPHES). Site selection and estimation of potential are critical to the planning and implementation of UPHES in old coal mines. This paper introduces a two-step site selection concept, including a screening assessment followed by a comprehensive assessment, to determine suitable locations for UPHES. The screening indicators in the screening assessment comprise geological features, mine water disasters, and minimum installed capacity, while the analytic hierarchy process (AHP) is applied in the comprehensive assessment. Additionally, coal mines in Henan Province are preliminarily screened through the screening assessment and the potential for UPHES is thoroughly investigated. The estimated volume of the drifts and shafts in old coal mines is approximately 1.35 × 107 m3, while in producing coal mines, it is around 2.96 × 107 m3. Furthermore, the corresponding annual potential for UPHES is 1468.9 GWh and 3226.3 GWh, respectively. By consuming surplus wind and solar power, UPHES is able to reduce 4.68 × 105 tonnes of carbon dioxide (CO2) emissions. The study provides preliminary guidance for policy-makers in developing UPHES in old coal mines.

show abstract

Section: Development Opportunities Derived From Mined Underground Spacementioning

confidence: 99%

A Two-Step Site Selection Concept for Underground Pumped Hydroelectric Energy Storage and Potential Estimation of Coal Mines in Henan Province

Chen

Hou

et al. 2023

Energies

View full text Add to dashboard Cite

show abstract

“…With the continuous use of fossil energy, the current society is facing increasingly serious problems such as energy shortage, climate warming and environmental pollution (De la Pena et al, 2022;Yuan et al, 2022;Zhong et al, 2022). Therefore, renewable clean energy has been favored by more and more countries in recent years.…”

Section: ⅰ Introductionmentioning

confidence: 99%

Analysis of High-Efficiency Field Modulated Multi-Phase Linear Generator for Wave Power Generation

Wang,

Zheng,

et al. 2024

Preprint

View full text Add to dashboard Cite

With the energy shortage and environmental problems becoming increasingly prominent, wave energy as a clean energy has become a hot research spot for scholars around the world. However, wave energy generators have problems such as low power density, low conversion efficiency and large fluctuation of detent force. To address these problems, a novel high-efficiency field modulated multi-phase linear generator (HFMMLG) for wave energy generation is proposed in this paper. Different from traditional three-phase field modulated linear generator (TTFMLG), double-side five-phase structure is adopted by HFMMLG, secondary mover integrates the magnetic adjusting ring(MAR) with the secondary armature. The topology of this new HFMMLG based on the magnetic field modulation theory is designed by this paper. The finite element model of HFMMLG and TTFMLG are established, and comparatively analyzes its power density, conversion efficiency and detent force. It is results show that the new HFMMLG designed in this paper improves the output power by 5.6 compared with TTFMLG, and the generator has smaller detent force. Therefore, the novel generator designed in this paper can greatly improve the generator power density and conversion efficiency, improve the stability of the generator and provides new ideas for the development of new wave energy linear generator.

show abstract

“…Coal accounts for a large proportion of the primary energy production and consumption structure, with an important role in driving economic development [1,2]. In recent years, coal mine accidents have declined, but many coal mines are still plagued by gas, dust, and toxic and harmful substances.…”

Section: Introductionmentioning

confidence: 99%

Research on the Evaluation of Air Quality in Underground Coal Mines Based on a Generalized Contrastive Weighted Comprehensive Scale Index Method

Chen

Peng

et al. 2023

Atmosphere

View full text Add to dashboard Cite

In this study, an optimization model was established based on the generalized contrastive weighted comprehensive scale index method. This model gives the evaluation indicators of SO2, NOx, CO, and TSP. It also innovatively introduces gas, the most harmful substance in underground coal mines, into the evaluation indicators. Moreover, the obvious hazardous concentration limit is used as the third standard concentration of the model. The scale sub-indices and the weights of SO2, NOx, CO, TSP, and gas are calculated, leading to the comprehensive scale index. Finally, the classification standard of the underground air quality is determined. An underground excavation face in Shaanxi Province is used as an example for air quality assessment. The air quality is generally poor at the points close to the working face, while that at the points far away from the working face is generally better. Furthermore, air quality optimization measures are given for areas with poor air quality.

show abstract

Toward carbon neutrality: The transition of the coal industrial chain in China

Cited by 7 publications

References 27 publications

A Two-Step Site Selection Concept for Underground Pumped Hydroelectric Energy Storage and Potential Estimation of Coal Mines in Henan Province

A Two-Step Site Selection Concept for Underground Pumped Hydroelectric Energy Storage and Potential Estimation of Coal Mines in Henan Province

Analysis of High-Efficiency Field Modulated Multi-Phase Linear Generator for Wave Power Generation

Research on the Evaluation of Air Quality in Underground Coal Mines Based on a Generalized Contrastive Weighted Comprehensive Scale Index Method

Contact Info

Product

Resources

About