Urgent~~~How much energy does it take to produce one kilowatt hour of electricity? Thermal energy pr

Introduction Urgent~~~How much energy does it take to produce one kilowatt hour of electricity? Thermal energy production is linked to the parameters of the power plant. Coal consumption here refers to the standard coal consumption rate, which is around 360 to 450. Th

Urgent~~~How much energy does it take to produce one kilowatt hour of electricity? Thermal energy pr

This is related to the power plant settings. Coal consumption here refers to the standard coal consumption rate, which is around 360-450. Actual coal consumption is higher because the calorific value is lower than that of standard coal.

As for water, it is difficult to know the average consumption rate for electricity production. It is linked to the operation of the unit. Additionally, boiler water is consumed. must be replaced regularly. It does not require power plants in rivers and lakes. Condensed water should also be consumed.

The efficiency of power plants is generally less than 40%. This is determined by the second law of thermodynamics. High quality coal will not improve efficiency. The main factors that determine the efficiency of power plants are the main ones. Steam Settings and Steam Settingsspent steam. The main steam parameters are determined by the pressure and temperature resistance conditions of the metal, the maximum is above 600 degrees, 26 MPa. The combustion temperature of coal is much higher than that, so it won't. be limited by the type of coal. Exhaust steam parameters are determined by atmospheric temperature or water temperature and are difficult to change.

Although high-quality coal has high calorific value and low volatile matter content, it is difficult to ignite and is expensive, so it is generally not used in power plants electrical. Power plants burn relatively lean fuels, including oil shale. and sugar cane slag and the like.

How many kilowatt hours of electricity is equivalent to 1 standard ton of coal?

m3/(s·GW) is equivalent tocubic meters per gigawatt second. This is cubic meters per million kilowatt seconds, that is, how many cubic meters of water are consumed per second to produce gigawatts (million kilowatts) of electricity.

During the operation of thermal power plants, in addition to consuming primary energy and emitting pollution, they also consume a large amount of water resources. The water consumption indicator has become one of the most important economic evaluation indicators. thermal power plants. Fresh water resources are needed to meet urban development, irrigation of agricultural lands, etc. The dependence of thermal power plants on water resources poses a huge burden to areas deprived of water resources.

Detailed information

The technology of cooling the exhaust air of steam turbines of thermal power plants has beenwidely used in water-poor areas of northern China. The steam turbine generator. Main engine exhaust is adopted. After air cooling system, compared with wet cooling unit with circulating water supply, the whole plant can save about 80% water. The current installed capacity of air-cooled units represents approximately 14% of the total installed thermal power capacity. Compared with conventional secondary cycle wet-cooled units, they can save about 1.2 billion tons of water resources every year.

After the host adopts air cooling technology, the operating back pressure increases and the coal consumption for power supply increases significantly. At the same time, the investment in air cooling system is higher than that of chiller unitsconventional wet conditions. For a 2 × 600 MW unit, the investment is about 200 to 300 million yuan higher. In addition, air cooling technology also has problems such as poor vacuum sealing of the system, serious dirt on the outer surface of the air-cooled condenser, and high dissolved oxygen content in the condensed water of the system. air cooling. The current development trend of air cooling technology for coal-fired power generation units is mainly to improve the economics of air cooling units and reduce coal consumption.

Baidu Encyclopedia - Thermal Power Plant

At approximately 3,000 degrees, the thermal energy generated by burning a ton of coal reaches 3*10 ^ 10Joulesof. Depending on the efficiency, generally 60% of the thermal energy will be lost, which meanse that it is effectively converted into 40% of thermal energy. According to calculations, a ton of coal can produce 3,250 kWh of electricity.

You can also calculate electricity production by weight. Still based on standard coal, a thermal power plant needs approximately 350 g of coal to produce 1 kilowatt hour of electricity. The quality of thermal generator equipment can gradually reduce energy consumption per kilowatt hour. Calculated this way, a ton of coal can generate around 3,000 kilowatt hours of electricity.

The process of turning coal into electricity

First, the coal is burned in a boiler to produce a flame. The flame carries a large amount of heat and. heats water to form high-pressure steam, which burns the fuel. Chemical energy is converted into thermal energy; high pressure steam felm of energy, turns the steam turbine at high speed and converts thermal energy into mechanical energy.

The steam turbine then turns the generator, converting mechanical energy into electrical energy. The voltage generated by the generator is 22 kV, which is then increased to around 500 kV via a step-up transformer, and finally transmitted to thousands of homes via transmission lines.

  • Popular Focus
  • Where is the cheapest battery wholesale?

    Where is the cheapest battery wholesale in Tangxia, Sanyuanli, Baiyun District? There is an enterprise specializing in the independent production of electric vehicles in Tangxia, Sanyuanli, Baiyun District, Baiyun Sanyuanli Avenue, Baiyun Sanyuanli Street
    08-02
  • Four 3.7V lithium batteries in series and parallel produce 7.4V/4.4A. How to reduce it to 4.8V/4.4A?

    Four 3.7V lithium batteries in series and parallel produce 7.4V/4.4A. I personally think it is impossible to reduce it to 4.8V/4.4A. Because the discharge platform of lithium batteries is generally set
    08-10
  • What are the materials of the negative electrodes of lithium batteries?

    What are the materials of the negative electrodes of lithium batteries? The main commercial applications of lithium batteries include graphite, which is a sheet of copper used to guide current and which does not react. another safe
    08-02
  • The difference between 18500 and 26500 batteries

    What is the difference between 18500 and 26500 batteries? The answer above is 18650. The person asking the question should ask what is the difference between 18505 and 26500 batteries. In the case of Fuant ER1
    08-02
  • What does 3.7V 80mAh written on a lithium battery mean?

    What does 3.7V 80mAh written on a lithium battery mean? 3.7 V, 80 mA = 0.08 A, H means 1 hour, or 3600 seconds. Taken together, it is
    08-02
  • How long does a lithium battery (cell phone battery) last?

    How long does a lithium battery (cell phone battery) last? The lifespan of mobile phone batteries, under normal conditions of use and without serious impact, the lifespan set by the manufacturer must be 5 years.
    08-02
  • Will lithium batteries explode when charging?

    Will lithium batteries explode when charged? Will lithium batteries explode when charged? Lithium battery explosions usually occur during the charging process, because the negative electrode material of lithium batteries is graphite or other carbon materi
    08-02
  • Parameters of lgdas31865 lithium battery

    Parameters of lgdas31865 lithium battery The parameters of lgdas31865 lithium battery are as follows: LGDAS31865 is a model 18650 lithium battery with a capacity of
    08-02
  • What are the main components of lithium battery electrolyte?

    What are the main components of lithium battery electrolyte? The composition of lithium battery electrolyte is shown below. 1. Ethylene carbonate: molecular formula C3H4O3. Colorless transparent liquid (>35℃), room temperature
    08-02
  • Who are the lithium battery manufacturers in Shandong?

    What are the lithium battery manufacturers in Shandong? Shandong Shengyang Power Supply Co., Ltd. and Shandong Weineng Environmental Protection Power Technology Co., Ltd. 1. Shandong Shengyang Power Supply Co., Ltd. is located in Shengyang, Qufu City.
    08-02
  • Types of drone batteries available in 2024

    Part 1. Types of drone batteries available in 2024In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in
    07-30
  • How long does it take to charge 26650 battery?

    How long does it take to charge a 26650 battery? The charging time for a 26650 battery is generally between 3 and 6 hours, but the precise time depends on the power of the charger and the capacity of the battery. in general
    08-02
  • For what?Sure, here's an article based on the phrase "For what?

    The simple yet profound question, "For what?" often serves as a gateway to deeper reflections on purpose and intention. It is a query that invites us to delve into the reasons behind actions, decisions, and circumstances that shape our lives and the wor
    08-02
  • Choosing the Right Cart Battery

    This comprehensive guide will walk you through everything you need about cart batteries, from understanding different types to making an informed purchase decision.
    08-02
  • 30mAh~500mAh 3.7 V Li-ion Battery

    Welcome to Ufine's collection of 3.7V lithium-ion batteries ranging from 30mAh to 500mAh. Explore a diverse range of compact and lightweight batteries suitable for various electronic devices,
    08-02
  • Here are 10 essential facts about drone batteries for 2024.

    10 Key Facts About Drone Battery for 2024 In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in the consumer, commercial, and industrial sectors. Below are the primary types of drone batteries avai
    08-02
  • Could you please explain the difference among IMR, ICR, INR, and IFR 18650 batteries?

    What is the Difference Between IMR, ICR, INR, and IFR 18650 Battery?In 18650 batteries, discerning the differences among IMR, ICR, INR, and IFR types is fundamental for tailored and efficient battery usage. These distinct
    08-02
  • Safety considerations for cart batteries

    Selecting the ideal cart battery is crucial for ensuring optimal performance and longevity of your electric vehicle or vaping device. This comprehensive guide w
    08-01