A kind of natural draft air-cooling tower and cooling method of nozzle evaporative pre-cooling
A technology of natural ventilation and air-cooling towers, which is applied in the direction of water shower coolers, lighting and heating equipment, heat exchanger types, etc., can solve the problems of power plant power generation efficiency decline, heat exchange efficiency decline, coal consumption increase, etc., to achieve improvement High operating efficiency, small resistance loss, and simple installation
Active Publication Date: 2019-05-07
SHANDONG UNIV
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Problems solved by technology
When the cooling efficiency of the air-cooling tower decreases, the temperature of the circulating water increases, the vacuum degree of the condenser decreases, and the working efficiency of the steam turbine unit decreases, which increases the amount of coal burned and affects the economics of the power plant.
[0004] 2) Natural ventilation air cooling tower, the initial investment is higher than that of mechanical ventilation tower, and the heat transfer efficiency is lower than that of wet cooling tower
[0005] 3) When the natural ventilation air-cooling tower operates in summer conditions, due to the increase of ambient air temperature and the decrease of heat exchange efficiency, the power generation efficiency of the power plant decreases, which cannot match the peak power consumption in summer
However, the evaporative precooling of the filler will inevitably introduce additional pressure loss, thereby preventing the outside air from passing through the air inlet, and the specific structural settings for the evaporative precooling of the nozzle are not given in the paper
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[0031] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0032] In the present invention, the words indicating orientation such as left, right, front, and rear are based on the orientation or positional relationship shown in the drawings, and are only for describing the present invention and simplifying the description, rather than indicating or implying that the referred device or component must have Particular orientations, constructed and operative in particular orientations, are not to be construed as limitations on the invention.
[0033] A typical implementation of this application, such as Figure 1-3 As shown, a natural draft air-cooling tower with nozzle evaporative precooling incl...
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The invention relates to the technical field of cooling, in particular to a natural air ventilating type air cooling tower with a spray nozzle evaporation pre-cooling function and a cooling method. The natural air ventilating type air cooling tower comprises a tower cylinder, wherein a layer of radial fin tube heat exchanger is arranged at the lower part of an inner cavity of the tower cylinder, awater distribution system is arranged under the heat exchanger, and a water collection tank is arranged under the water distribution system; the water distribution system comprises a vertical spray nozzle system and a horizontal spray nozzle system, the vertical spray nozzle system is arranged at the outer side of an air inlet of the tower cylinder, the water spray direction of the vertical spraynozzle system is vertical to the middle axis of the tower cylinder, the horizontal spray nozzle system is arranged just under the heat exchanger, and the water spray direction of the horizontal spraynozzle system is parallel with the middle axis of the tower cylinder; when the vertical spray nozzle system and the horizontal spray nozzle system are used for high-temperature environments, the evaporation pre-cooling of the air can be realized before the outside air is in contact with the heat exchanger. The natural air ventilating type air cooling tower can be used for improving the cooling efficiency of circulating water in summer.
Description
technical field [0001] The invention belongs to the technical field of cooling, and in particular relates to a natural draft air cooling tower and a cooling method for evaporative precooling of nozzles. Background technique [0002] In my country's central and western regions rich in coal and low in water, due to the lack of water resources, natural ventilation air cooling towers have broad application prospects. The characteristics of natural ventilation air cooling towers are as follows: [0003] 1) Natural ventilation air cooling tower is an important cold-end equipment, and its cooling performance is directly related to the economy and stability of the power generation efficiency of the power plant. When the cooling efficiency of the air-cooling tower decreases, the temperature of the circulating water increases, the vacuum degree of the condenser decreases, and the working efficiency of the steam turbine unit decreases, which increases the amount of coal burned and affe...
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IPC IPC(8): F28C1/00F28F25/02F28F25/06
CPCF28C1/00F28F25/02F28F25/06
Inventor 何锁盈张治愚史月涛高明孙奉仲
Owner SHANDONG UNIV