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Boosted-ventilation direct air cooling tower

An air-cooling tower, a direct technology, applied in the field of heat exchange, can solve problems such as lack of solutions, achieve the effect of reducing the amount of cooling air, increasing the overall heat transfer coefficient, and enhancing the regulation function

Inactive Publication Date: 2014-04-09
李宁
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In addition, the above-mentioned patents still lack a good solution to the problems existing in winter operation

Method used

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specific Embodiment approach

[0055] The zero-meter diameter of the air-cooling tower is 120 meters, the outlet diameter is 90 meters, and the total height of the air-cooling tower is 150 meters; the height of the hot air inlet is 30 meters; m; wing ratio 120.

[0056] The temperature is 35°C, the suction force of the air duct is 90Pa, the maximum wind speed on the windward side is 2.7 meters, and the number of fans is 72. The fans provide the air supply power with a total pressure of 50Pa, and the air volume is 585m 3 / s, the diameter of the fan is 9.14 meters, the total power consumption is 3000kw, and the back pressure of the turbine is 18kPa.

[0057] The temperature is 20°C, the suction force of the air duct is 100Pa, the maximum wind speed on the windward side is 2.7 meters, the number of fans is 72, the fans provide 40Pa partial pressure, and the air volume is 585m 3 / s, the diameter of the fan is 9.14 meters, the total power consumption is 2400kw, and the back pressure of the turbine is 10kPa;

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Abstract

The invention belongs to the field heat exchange, and relates to a boosted-ventilation direct air cooling tower, in particular to an air-cooling power generation air cooling island and an air driving mode. Due to winter-summer difference and day-night difference of air temperature, frequent natural wind and multiple changes of wind speed and wind direction, a pure natural ventilation and simple mechanical-assisted ventilation air cooling tower is difficult to meet current air cooling requirements. Condensation triangles composed of axial flow fans, finned tubes and the like are disposed around the lower portion of a natural ventilator. Cooling capacity of the air cooling tower in summer is greatly enhanced, damage of strong wind is weakened greatly, excess draft in the air cooling tower in winder can be utilized, energy is recovered through the axial flow fans, and hot air in the tower can be pumped out by reverse rotation of the fans to melt the accidentally-frozen fined tubes. The boosted-ventilation direct air cooling tower can be matched with direct air cooling and indirect air cooling units in various sizes.

Description

technical field [0001] The invention belongs to the field of heat exchange, and in particular relates to an air-driven driving mode of a natural ventilation direct air-cooling system for air-cooled power generation using air as a cooling medium. Background technique [0002] Due to the increasing shortage of water resources, air-cooled power generation, which can greatly reduce the water consumption of thermal power plants and nuclear power plants, has been widely used in my country and the world by using air to directly or indirectly condense exhaust steam of steam turbines through metal surfaces. [0003] Since the heat capacity of air is only 1 / 4 of that of water, and its density is only 1 / 1000 of that of water, the exhaust steam of the air-cooled power generation turbine can only be taken away by the enthalpy of the air temperature rise, and the amount of air used It is particularly huge, so the relationship between the back pressure of the turbine and the atmospheric en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28B1/06
Inventor 李宁
Owner 李宁
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