Power Generation

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Power Generation by Mind Map: Power Generation

1. Tidal Energy

1.1. Types

1.1.1. Tidal Stream Generators

1.1.1.1. Concrete dams create water level differential which allows water to move in and out creating tides.

1.1.1.2. Negative Side:

1.1.1.2.1. High cost

1.1.1.2.2. Turbidity effect

1.1.1.2.3. Destruction of marine habitat

1.1.2. Tidal Barrage

1.1.2.1. Similar mechanism with wind power generation

1.1.2.2. Negative side:

1.1.2.2.1. High start-up cost

1.1.2.2.2. Unsteady for large scale generation

1.1.2.2.3. Uncertain power production due to inconsistency of waves

2. Steam Turbine

2.1. Advantages:

2.1.1. Low initial cost

2.1.2. Reduced losses

2.1.3. Lesser construction period

2.2. Disadvantages:

2.2.1. Not renewable energy

2.2.2. Decrease efficiency if decrease load

2.2.3. High cost for generation

2.2.4. Pollutions

2.2.5. Low Lifespan

2.2.6. Require high rpm

2.3. Main components

2.3.1. Boiler

2.3.2. Super heater

2.3.3. Feed Water

2.3.4. Coal Pulverizer

2.3.5. Force draft fan

2.3.6. Economizer

2.3.7. Condenser

3. Hydro Power Generation

3.1. Main component

3.1.1. Transformer

3.1.2. Power house

3.1.3. Turbine

3.1.4. Penstock

3.1.5. Reservoir

3.2. Working principle

3.2.1. Water confined in large reservoir

3.2.2. Flowing water passes through penstock and turn the turbine

3.2.3. Types

3.2.3.1. Impoundment - Reservoir

3.2.3.2. Diversion - River

3.2.3.3. Pumped storage - Pump back mechanism

3.3. Types

3.3.1. Francis

3.3.2. Kaplan

3.3.3. Pelton

3.3.4. Turgo

3.4. Benefits

3.4.1. Cost competitive

3.4.2. Reliable

3.4.3. Base load power

3.5. Concerns

3.5.1. Changing wildlife habitat

3.5.2. Blocking fish passage

3.5.3. Dam failure

4. Wind Energy

4.1. Main Component

4.1.1. Blade and Rotor

4.1.2. Generator

4.1.3. Gear Box

4.2. Wind Speed

4.2.1. 0-50 mph to operate the system

4.2.2. >50 mph: Cut-off-speed

4.3. Turbine Design

4.3.1. Horizontal Axis

4.3.1.1. Higher Altitude

4.3.1.2. Require Substantial Tower Structure

4.3.2. Vertical Axis

4.3.2.1. No need turn into wind direction

4.3.2.2. Lower Efficiency

4.3.2.3. Easier Construction and Maintanenance

5. Gas Turbine

5.1. Main Component

5.1.1. Turbine

5.1.2. Compressor

5.1.3. Combustion Chamber

5.2. Types

5.2.1. Combine Cycle

5.2.1.1. Exhaust gas heated to drive the turbine

5.2.2. Simple Cycle

5.2.2.1. Exhaust gas are not re-circulated

6. Solar Energy

6.1. Advantages

6.1.1. Clean and infinite energy

6.2. Disadvantages

6.2.1. Not consistence

6.3. Types

6.3.1. Active

6.3.1.1. Solar Thermal

6.3.1.2. Photovoltaic

6.3.1.3. Solar chemical

6.3.2. Passive

6.3.2.1. Solarium