466062 GHG Life Cycle Assessment for the United Arab Emirates Electricity Sector Combining Optimization and Simulation Tools
There is currently a need to assess the environmental footprints of the UAE electricity sector in terms of the GHG emission life cycle. This could allow benchmarking the UAE’s electricity sector against other nations, while finding suitable niches for GHG mitigation strategies. Moreover, since over 98% of the electricity generated in the UAE is gas-based, an analysis on the UAE’s natural gas life cycle represents a key factor on determining the overall environmental impact of the electricity sector. The present analysis considers a cradle-to-gate GHG inventory approach; which consists of upstream and downstream inventories. The upstream inventory includes all the activities before fuel is combusted at a power plant. Such activities comprise: sour natural gas extraction, sour gas sweetening process, and sweet gas transport to the power plant gate. On the other hand, the downstream inventory includes the electricity generation and transmission processes. For the present study, fundamental engineering principles were used to mathematically estimate process specific energy consumption and related life cycle GHG emissions for: sour gas extraction, sweet gas transport, and electricity transmission activities. Additionally, ProMax® v3.2 was used to simulate the sour gas sweetening process, while performing a parametric analysis to improve the performance of this process. Also, an optimization mathematical model developed in the General Algebraic Modeling System (GAMS) was used to illustrate the design and operation of the UAE power sector.
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