Table of Contents
- 1 How long does it take to turn on a coal power plant?
- 2 Why thermal power plant are not suitable for fluctuating load?
- 3 How do you turn coal into electricity?
- 4 On which criteria water turbines are selected for different hydro power plants?
- 5 Why Generation is 11KV in the power stations?
- 6 What is the process of Project Management in thermal power plant?
- 7 How long does it take for a power plant to hot start?
How long does it take to turn on a coal power plant?
On average, the time between start of fossil fuel combustion and start of generation was less than 9 hours (see Figure 2). the heat input during “fast to generate” starts (less than or equal to 10 hours between start of fossil fuel combustion and start of electricity generation) (see Figure 3).
How long does it take to build a thermal power plant?
According to the IAEA data, the average construction time for plants with nominal power below 800 MWe is about 71 months, while for higher power reactors, the construction time increases about 8 months for each increase of 100 MWe in power.
Why thermal power plant are not suitable for fluctuating load?
Main 2018 Question Answer – ELECTRICAL ENGINEERING – Thermal Plants Are Not Suitable For Supplying Fluctuating Loads. If you add more heat it takes some time for the thermal mass of the plant and the water to respond. Try boiling a small and a large pot of water to see how slow it responds.
Why the efficiency of thermal power plant is very low?
The efficiency of thermal power plants is rather poor. In the power plants, before starting a new cycle, the steam which is used to spin the turbine in the last cycle has to be condensed to water at first and then reheated to change into steam again.
How do you turn coal into electricity?
Coal-fired plants produce electricity by burning coal in a boiler to produce steam. The steam produced, under tremendous pressure, flows into a turbine, which spins a generator to create electricity. The steam is then cooled, condensed back into water and returned to the boiler to start the process over.
How many people does it take to operate a coal plant?
According to Singh & Fehrs’ 2001 analysis of Energy Information Administration data, the average coal-fired power plant – per megawatt of peak capacity – employs 0.18 people in operations & maintenance on a permanent basis.
On which criteria water turbines are selected for different hydro power plants?
The type of turbine selected for any given hydropower project is based on the height and speed of the incoming water – known as the hydraulic head – and the volume of water that flows known as the hydroelectric discharge. Efficiency and cost are also factors to be considered.
What is meant by cogeneration system?
Cogeneration systems refer to energy systems that have the ability to produce two useful commodities simultaneously. A good example of cogeneration systems are combined heat and power plants, where electricity and useful heat are both produced from one plant.
Why Generation is 11KV in the power stations?
It is cheaper to generate at a relative lower voltage and then step it up for transmission. Hence, most power generating plants are designed to operate at 11KV. Therefore in order to compensate for this, the primary generation voltage would be; the required nominal voltage + transmission losses.
How do you shut down a nuclear power plant?
Shutdown is normally accomplished by gradual insertion of some (or all) of the control rods, or by introduction of soluble neutron poison (boric acid in case of PWRs) into the reactor coolant. Reactor thermal power is in the first instance decreased from 100\% of rated power to about 10 – 30\% of rated thermal power.
What is the process of Project Management in thermal power plant?
The process of project management is generally applied to a maintenance shutdown in coal handling plant of thermal power stations. The critical path method (CPM) or sometimes a Gantt charts is used for planning shut down.
What determines the size of a power plant shutdown?
This in turn is based on operating history, or the power at which the plant was operating before shutdown. This can be large for commercial plants, because they typically operate at or very near capacity and the power companies bring coal or natural gas plants up and down to modulate grid capacity.
How long does it take for a power plant to hot start?
The time taken by the plant to hot start will be depending on the MW capacity of the plant. e.g. for a plant with a capacity of around 600MW, the time taken for hot start will be around 200 minutes. There are three basic types of start-ups for power plant depending upon the water separator inlet temperature in a coal based power plant.