Browsing by Subject "CO2 emissions"

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    Open Access
    Impact on heat rate and subsequent emissions due to varying operation of coal fired power plants
    (2019) Akpan, Patrick Udeme-Obong; Fuls, Wim
    Energy mix modellers often use a constant emissions factor model, which more or less implies a constant heat rate, when trying to show the emissions reduction benefits of integrating renewable power generation system on the grid. This approach does not consider the fact that there is a deterioration in the heat rate with load for the Coal Fired Power Plants that need to accommodate the additional renewable supply. If varying heat rate were to be included in a study, it is often limited to plant specific cases. This PhD presents a novel Variable Turbine Cycle Heat Rate (V-TCHR) model for predicting the part load Turbine cycle heat rate (TCHR) response of various Coal Fired Power Plant (CFPP) architectures, without detail knowledge of the entire steam cycle parameters. A total of 192 process models of representative CFPP architectures were developed using a Virtual Plant software. The models had different combinations of the degree of reheat; the throttle temperature; throttle pressure; and condenser cooling technology. The part load response of all the models were simulated using the software.
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    Open Access
    The impact of green finance, renewable energy, and economic growth on energy transition in African countries
    (2025) Malatji, Charity Tumisho; Kabinga, Mundia
    Energy transition demands radical and immediate action, requiring substantial mobilisation of green finance to advance progress towards limiting global warming to 1.5°C. The impact of green finance, renewable energy, and economic growth on carbon dioxide emissions has been assessed, however, limited to developed countries and China. The study poses the question whether green finance, renewable energy, and economic growth have an impact on carbon dioxide emissions in selected African countries. The study employed a panel PMG-ARDL approach, over the period 2000 – 2019. The findings indicate that in the long run, renewable energy has a negative impact on carbon dioxide emissions, whereas green finance and economic growth positively impact carbon dioxide emissions. Moreover, in the short run, green finance has a negative impact on carbon dioxide emissions, while renewable energy and economic growth indicate an insignificant impact on carbon dioxide emissions. Lack of access to green finance is the biggest obstacle to Africa's energy transition. The study suggests an improved leadership commitment; and environmental policy implementation to accelerate the energy transition.