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Examoogle • User • info@examoogle.com • EE-2024-8821
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A steam power station requires space
Equal to diesel power station
More than diesel power station
Less than diesel power station
None of the above
More than diesel power station
A steam power station requires significantly more space than a diesel power station because it relies on a complex Rankine cycle involving massive auxiliary infrastructure like boilers, condensers, cooling towers, coal handling plants, and ash disposal systems. In contrast, a diesel power station is modular and requires only the engine, generator, and fuel storage, making it much more compact.
A steam power station requires significantly more space than a diesel power station because it relies on a complex Rankine cycle involving massive auxiliary infrastructure like boilers, condensers, cooling towers, coal handling plants, and ash disposal systems. In contrast, a diesel power station is modular and requires only the engine, generator, and fuel storage, making it much more compact.
ηthermal=QinWnet — efficiency of the power cycle
Vreq∝Complexity of Auxiliary Systems — space requirement dependency
In a steam plant, water is converted to high-pressure steam in a boiler using coal combustion, which then expands through a turbine. This process necessitates vast facilities for water treatment, coal storage (stockyard), massive boiler units, flue gas cleaning, and thermal rejection components. A diesel station functions via direct internal combustion, eliminating the need for steam generation and heat exchange loops, hence the reduced footprint.
Steam stations are typically base-load plants, whereas diesel stations are primarily for peak-load or standby applications.
Coal handling and ash handling systems in steam plants contribute to the majority of the land requirement.
The power density of diesel plants is much higher compared to steam plants.
Diesel: Faster start-up time and black-start capability.
Steam: High fuel flexibility and suitability for large scale continuous power generation.
Diesel: High fuel cost and operational maintenance per unit of electricity.
Steam: Massive land, water, and auxiliary equipment requirements.
Steam: Grid-connected large scale base load generation.
Diesel: Remote areas, backup for hospitals, and peak load shaving.
| Feature | Steam Station | Diesel Station |
|---|---|---|
Land Requirement | Large | Small |
Auxiliary Systems | Extensive | Minimal |
A typical coal-based thermal power plant requires hundreds of acres for coal storage and ash ponds alone.
Option C is incorrect because steam plants are essentially large industrial complexes.
B is correct — Steam power stations require more space due to the extensive auxiliary plant required for steam generation, cooling, and fuel handling compared to the self-contained nature of diesel engine units.
Always remember that as the complexity of the energy conversion process increases (from mechanical to steam-based Rankine cycle), the spatial footprint required for auxiliary balance-of-plant equipment increases exponentially.