Environmental, technological, and economic analysis of supercritical coal-fired power system
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.This study analyzes supercritical coal power plants in Pakistan, finding global warming potential is the highest environmental impact. Chemical looping combustion offers a more competitive and cleaner alternative for sustainable energy in developing nations.
Area Of Science
- Environmental science and energy policy
- Life cycle assessment of energy systems
- Sustainable energy development in emerging economies
Background
- Developing countries heavily depend on fossil fuels, particularly coal, leading to significant environmental damage.
- Pakistan faces power generation deficits, increasing reliance on coal despite its environmental externalities.
- Supercritical coal power plants are prevalent but have substantial environmental footprints.
Purpose Of The Study
- To conduct an environmental, technological, and economic analysis of a supercritical coal power unit in Pakistan.
- To compare the environmental performance and economic feasibility of supercritical coal plants with chemical looping combustion (CLC).
- To inform policy frameworks for cleaner coal power generation and energy sustainability in developing countries.
Main Methods
- Environmental assessment using the CML-1A baseline method in OpenLCA software.
- Selection of eight midpoint impact indicators with 1 MWh of generated electricity as the functional unit.
- Comparative economic feasibility analysis between supercritical and CLC-based supercritical coal power plants.
Main Results
- Global warming potential emerged as the highest environmental impact category, while ozone layer depletion had the least.
- The operational stage of the plant dominated most impact categories, excluding photochemical oxidation and human toxicity.
- Supercritical plants demonstrate higher removal efficiency for CO2 and pollutants than subcritical plants.
- Chemical looping combustion (CLC)-based supercritical coal power plants are more economically competitive and environmentally friendly.
Conclusions
- Supercritical coal power plants have significant environmental impacts, with global warming potential being a key concern.
- Chemical looping combustion presents a viable and sustainable alternative for coal-fired power generation.
- Implementing scientific cleaner energy management systems and supportive policies can drive the adoption of cleaner coal technologies in developing economies.
- The study provides policy implications for enhancing energy sustainability in emerging economies.
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
Related Concept Videos
Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
SFC utilizes a supercritical fluid mobile phase,...
Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...
Turbine-governor control is crucial for maintaining power system stability by balancing turbine mechanical power output with electrical load demand. This mechanism ensures that generator frequency and rotor speed are within acceptable limits during load variations. Turbine-generator units store kinetic energy due to their rotating masses; this energy is released to meet the load requirement when the load increases. The electrical torque of turbines rises to meet the demand, whereas the...
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
These simplifications reduce the computational burden significantly compared to the full Newton-Raphson method....
There are several methods to control power flow in power systems:
Prime mover and excitation control of generators
Switching of shunt capacitor banks, shunt reactors, and static var systems
Control of tap-changing and regulating transformers
A simple generator in the system is represented by its Thevenin equivalent circuit, which represents its model operating under balanced steady-state conditions. The key parameters include the generator terminal voltage Vt, the excitation voltage Eg,...