How to manage cooling water in nuclear power plants

Introduction How to treat the cooling water of nuclear power plants? Cooling water from nuclear power plants will be recycled. The primary circuit coolant is generally called coolant or moderator (moderator), which is light water under pressure (ordinary water).

How to manage cooling water in nuclear power plants

Cooling water from nuclear power plants is recycled.

The cooling fluid of the primary circuit is generally called heat transfer or moderator (neutron moderator). This is light water under pressure (ordinary water), since it is in contact with the reactor core. will be radioactive; the cooling water of the secondary circuit has the same function as an ordinary thermal power plant. It is heated and transformed into steam to produce electricity, and there is no radioactivity.

The third loop generally uses filtered water from the Haihe River. After cooling the secondary loop, it is then discharged towards the coast or along the river. The discharged water does not contain radioactivity, but due to the release of. excess heat in the secondary loop, there is therefore thermal pollution in relation to the emission medium.

Under normal circumstances, when hot waterenters the cooling tower to be cooled, only a small amount of steam comes out (white smoke), and most of the water can and will be recycled after being cooled. is not radioactive.

The principle of nuclear power plants:

In a pressurized water reactor, a large amount of heat is generated by the auto chain fission reaction -maintenance of Nuclear fuel atoms and coolant (also called heat transfer body) bring heat from the reactor into the steam generator and transfer it to its working fluid, water.

Next, the main circulation pump returns the coolant to the reactor for recycling, thus forming a loop, called the first loop. This process is the energy conversion process in which nuclear fission energy is converted into thermal energy.

The working fluid ofThe secondary side outside the U-shaped tube of the steam generator is heated and evaporates to form steam. Steam enters the steam turbine and expands to do work, converting the thermal energy released by it. the enthalpy drop of the steam in the mechanical energy of the rotation of the steam turbine rotor. This process is called energy conversion process in which thermal energy is converted into mechanical energy.

Reference for the above content: Baidu Encyclopedia - Nuclear Power Plant

What is cross flow cooling water for thermal power plants?

The function of the cooling tower in a thermal power plant is to supply cooling water of a certain temperature to the condenser to condense the exhaust steam from the low pressure cylinder of the steam turbine, so that the steam turbine can operate safelyand economical under a certain exhaust vapor pressure. The functions of cooling towers in thermal power plants are as follows:

The higher the cooling capacity of the cooling tower, the lower the temperature of the cooling water supplied to the condenser after circulating water passes through the cooling system. tower, and the lower the cooling water temperature, it will also improve the condenser vacuum, which ultimately reduces the coal consumption level of the power plant and improves the economical operation of the unit.

The choice of cooling tower is very important. There are many shapes of cooling towers and their structures are also very complex. According to the ventilation method, there are natural ventilation cooling towers and mechanical ventilation cooling towers according to the ventilation method.contact between hot water and air, there are wet cooling towers (open type), dry cooling towers (closed type) and dry and wet; Types (mixed). Classified according to the flow direction of hot water and air, there are counter-flow cooling towers and cross-flow cooling towers.

Thermal power plants generally use moist natural ventilation cooling towers or moist mechanical ventilation cooling towers. Moist natural ventilation cooling tower is a cooling tower that uses natural wind or heat to generate airflow. Its advantages are simple structure and low operating cost. It is inexpensive and easy to maintain. Its disadvantages are its large size, its low efficiency and its great impact on the environment. The wet mechanical ventilation cooling tower is a cooling towerement that uses fans to force airflow. Its advantages are small size, high efficiency and it is not affected by the environment. Its disadvantages are complex structure, high operating costs and high noise.

Boiler return water, ventilation and cooling.

A thermal power plant, called a thermal power plant, is a factory that uses coal, oil and natural gas as fuel to produce electrical energy. Its basic production process is as follows: fuel is burned in the boiler. and the heated water is converted into steam, and the chemical composition of the fuel is converted into steam, the energy is converted into thermal energy, the pressure of the steam drives the rotation of the steam turbine, the thermal energy is converted into mechanical energy, then the heated water is transformed into steam. The steam turbine drives the rotation of the generator, converting mechanical energy into electrical energy.

  • 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