Natural ventilation wet type cooling tower ventilation device

A wet cooling and natural ventilation technology, applied in water shower coolers, direct contact heat exchangers, heat exchanger types, etc., can solve problems such as poor heat exchange in the center of natural ventilation wet cooling towers, and improve efficiency and economy. performance, enhance heat exchange, and reduce the temperature of the water out of the tower

Pending Publication Date: 2018-01-05
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0003] The purpose of the present invention is to provide a natural ventilation wet cooling tower ventilation device to solve t

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  • Natural ventilation wet type cooling tower ventilation device
  • Natural ventilation wet type cooling tower ventilation device
  • Natural ventilation wet type cooling tower ventilation device

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Example Embodiment

[0044] The specific example is as follows: at the air inlet of the cooling tower, 10 air passages are evenly arranged radially along the circumference, one end of the pipe is located at the air inlet of the cooling tower, and the other end is located at the center of the cooling tower. The air duct is tapered from the outer end to the inner end, and the cross-section of the air duct is designed to be rectangular or arched. Among them, 5 are long air passages with a length of 45 meters; 5 are short air passages with a length of 35 meters, and the lengths are staggered. The height of the air inlet of the ventilation duct is 5 meters, and the width of the air inlet of the ventilation duct is 10 meters. In this way, when the cooling tower is running, a part of the cold air enters the center of the cooling tower along the ventilation channel. Because there is no heat exchange process outside the rain area, this part of the cold air has a large momentum and low temperature, which ca...

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Abstract

The invention provides a ventilation device for a natural ventilation wet cooling tower, which belongs to the technical field of heat exchange equipment, and includes a plurality of ventilation passages, and the plurality of ventilation passages are evenly arranged radially along the circumference of the air inlet of the cooling tower, and the ventilation passages The cross-section is arched, and the cross-sectional size of the air duct decreases from the outside to the center of the air inlet. The natural ventilation wet cooling tower ventilation device provided by the present invention is to add an air passage in the cooling tower, which can directly send cold air to the center of the cooling tower, increase the air volume and wind speed of the heat exchange in the center of the cooling tower, and effectively strengthen the cooling system. The heat exchange in the central area of ​​the cooling tower reduces the temperature of the outlet water and improves the efficiency and economy of the unit.

Description

technical field [0001] The invention belongs to the technical field of heat exchange equipment, and more specifically relates to a ventilation device for a natural ventilation wet cooling tower. Background technique [0002] The cooling towers of the existing units all directly take in the air from the air inlet, and the cold air gathers from the periphery to the central area and then flows to the upper part of the cooling tower. When the natural ventilation wet cooling tower is in operation, the cold air entering the cooling tower will first pass through the rain area. In the rain area, the cold air exchanges heat with the high-temperature condensed water, thereby losing part of the kinetic energy and increasing the temperature of the cold air. This leads to poor heat transfer performance after the cold air enters the central area of ​​the cooling tower, and cannot effectively cool the central area. This kind of heat transfer distribution with good heat transfer around the...

Claims

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Application Information

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IPC IPC(8): F28F25/00
Inventor 王蓝婧付文锋陈海文赵文升谷俊杰
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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