It depends on the amount of energy generated. Coal consumption is generally calculated based on an hour of use of 5,500 hours. In this case, a 1 million kilowatt thermal power plant uses approximately 1.5 to 1.8 million tons of standard coal per year. Standard coal refers to coal with a low calorific value of 7,000 kcal/kg.
We can only give a rough range of coal consumption here, as the efficiency of production units varies considerably. If it is an ultra-supercritical unit, it will consume less coal, while a subcritical unit will consume more. coal.
Advantages and disadvantages of thermal power generation and hydroelectric generation
It is not a fixed value, but changes when the capacity (boiler or generator ) changes. The capacity unit of a steam boiler is T/h, which corresponds to the quantityof evaporation per hour and not in seconds. Theoretically, it takes a ton of water to evaporate a ton of steam, which is the law of conservation of matter. However, because the operation of the boiler requires factors such as wastewater discharge and leakage, as well as some physical factors, the direct consumption of water to evaporate one ton of steam, i.e. consumption of water entering the boiler, is greater than the evaporation capacity, and generally does not exceed 1.2 tonnes.
Firepower:
Advantages: The technology is mature and the current cost is low. Low geographic environment requirements.
Disadvantages: high pollution, poor prospects for sustainable development. It consumes a lot of energy and has low efficiency.
Hydraulic power:
Advantages: long history, low subsequent costs. No pollution, renewable water energy, large reservesves total energy from water.
Disadvantages: large capital investments and high requirements for geographical environment. For example, southwest China is extremely rich in water resources, but the natural environment is harsh and construction is difficult, making its use impossible. them.
Detailed information:
The production of electricity is the use of devices of production of electricity to convert water. Energy and fossil energy in Fuel thermal energy, nuclear energy, solar energy, wind energy, geothermal energy, ocean energy and other energies are converted into electrical energy . By the end of the 20th century, most electricity generation used the method of burning fossil fuels. However, fossil fuel resources are not abundant andare becoming more and more exhausted. At present, humans are gradually using renewable energies (hydraulic energy, solar energy, energy). wind energy, geothermal energy, marine energy, etc.) to produce electricity.
The basic principle of hydroelectricity is to use the difference in water level to produce electricity with a hydroelectric generator, that is, the potential energy of the water is converted into mechanical energy of the water wheel, and then into mechanical energy. mechanical energy is used to drive the generator to obtain electricity. Scientists take advantage of the natural conditions of water level difference, effectively use fluid engineering and mechanical physics, and carefully combine them to achieve the highest power generation capacity, so that people can use an electricity cheap and pollution-free.
The production ofThermal energy generally refers to the use of thermal energy generated when fuels such as oil, coal and natural gas are burned to heat water, transforming the water into high temperature water vapor and high pressure, and then use the water vapor to drive a generator to produce electricity. The general name of the method. Power plants that use coal, oil, or natural gas as fuel are collectively called thermal power plants.
Reference Material Baidu Encyclopedia: Power Generation