University of Groningen
The developing role of gas in decarbonizing China's energy system Zhang, Jinrui
DOI:
10.33612/diss.162017806
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Publication date: 2021
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Zhang, J. (2021). The developing role of gas in decarbonizing China's energy system: system analysis of technical, economic and environmental improvements of LNG and low carbon gas supply chains and infrastructure. University of Groningen. https://doi.org/10.33612/diss.162017806
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1. Optimal utilization of the waste energy and material in the gas supply chain can lead to significant energy saving, cost saving, and GHG emission mitigating. (Chapter 3, 4, and 5) 2. The techno-economic performance of different natural gas liquefaction facilities is hard to compare and harmonize due to the highly variable design parameters and local conditions. (Chapter 2) 3. The new concepts for natural gas liquefaction, such as pressurized concept and two-phase expander, can be firstly applied in small-scale LNG projects to identify the potential improvements. (chapter 2 and 3) 4. In addition to focusing only on optimization of liquefaction and regasification processes, the entire LNG supply chain should be optimized to improve the technical, economic, and environmental performance. (Chapter 4) 5. Fossil-based hydrogen is not an attractive energy carrier compared to the natural gas with carbon capture for power generation and industrial end-users. (Chapter 4) 6. Normally the LNG has significantly higher well-to-gate emissions than the pipeline gas, but it is not the case for China because of geographic location of gas fields, LNG terminals, and end-users. (Chapter 5) 7. Long-term central coordination and planning are needed for the optimal deployment of gas infrastructure and low-carbon gas supply chain. (Chapter 5) 8. Power-to-methane and hydrogen blending can be helpful to mitigate GHG emission in the short term, but the gas infrastructure would eventually need to transport pure low-carbon hydrogen for deep decarbonization. (Chapter 5) 9. As there is no single solution for energy transition, research and development of all low-carbon technologies are necessary to increase the chance for carbon neutrality in the near future. 10. A PhD life in Europe is a journey to be enjoyed, not a task to be finished. 11. If not now, when? If not you, who? (Hillel the Elder)
