Dry Cooler With Adiabatic Cooling Pad For Steam Turbine
Dry Cooler With Adiabatic Cooling Pad For Steam Turbine
Dry coolers are mainly composed of a surface heat exchanger consisting of fins and tubes that use air as a coolant to cool the exhaust steam of the turbine or the cooling water that condenses the exhaust steam.
Dry coolers with adiabatic cooling pads add to this. When the system temperature does not exceed a preset threshold, the adiabatic cooling pads do not operate, relying only on the air cooling method of the dry cooler to dissipate heat. Once the temperature exceeds the threshold, the adiabatic cooling pads are activated to cool the air flowing through the pads by evaporation of water, thus providing additional cooling effect to the dry cooler.
Structural Components
Cooling Tube Set: Tube and fin heat exchangers are usually used to increase the heat dissipation area and improve the cooling efficiency. The tubes and fins are usually made of metal materials, such as steel, copper or aluminum alloy, with good thermal conductivity.
Fans: Used to force air flow to pass through the cooling tube sets and adiabatic cooling pads to accelerate heat transfer and dispersion. The fan is usually an axial fan or centrifugal fan, and the speed can be adjusted as needed to control the cooling air volume.
Adiabatic cooling pads: generally made of highly absorbent, breathable materials, such as fiber fabrics, porous ceramics and so on. The cooling pads are installed in the air flow path of the cooler to reduce the air temperature through water spraying and evaporation.
Spraying system: including water pump, water tank, nozzle and other components, used to evenly spray water onto the adiabatic cooling pads, so that the cooling pads are kept wet, to realize the evaporative cooling effect.
Control system: It is used to monitor and control the operation status of the cooler, including temperature sensor, pressure sensor, controller and so on. According to the operating parameters of the turbine and the ambient temperature, it automatically adjusts the fan speed, spray water volume, etc. to ensure the cooling effect and stable operation of the system.
Advantages
Significant water saving effect: compared with the traditional wet cooling system, the dry cooler with adiabatic cooling pads does not need a large amount of cooling water during normal operation, and only consumes a small amount of water for evaporative cooling when the adiabatic cooling pads are in operation, which can significantly reduce the consumption of water resources.
Reduced environmental pollution: As a result of reducing the use and discharge of water, the risk of pollution to the environment is reduced, in particular, avoiding the eutrophication of water bodies and the discharge of chemical substances that may occur in wet cooling systems.
Improvement of cooling efficiency: The evaporative cooling effect of adiabatic cooling pads can significantly reduce the air temperature under high temperature environment and improve the cooling effect of dry cooler, so that the turbine can maintain a stable operating temperature even under high load or high temperature environment.
Low operation and maintenance cost: the structure of dry cooler is relatively simple, and it does not need complicated water treatment equipment and huge cooling pool, which reduces the maintenance workload and cost of the equipment. At the same time, due to the reduced use of water, it also reduces the impact of scale, corrosion and other problems on the equipment and extends the service life of the equipment.
Application Scenarios
Power plants in water-scarce areas: in water-scarce areas, the use of dry coolers with adiabatic cooling pads can effectively solve the problem of water used for cooling the turbine and ensure the normal operation of the power plant.
Areas with high environmental requirements: in areas with high environmental requirements such as ecological protection zones and city neighborhoods, this type of cooler can reduce the impact on the environment and meet the requirements of environmental protection.
Industrial enterprises in high-temperature environment: For some industrial enterprises in high-temperature climatic conditions, such as iron and steel mills, chemical plants, etc., dry coolers with adiabatic cooling pads can provide reliable cooling for turbines and other equipment to ensure the stability of the production process.
