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Optimization method of spraying humidification system of direct air condenser

An air-cooled condenser and system optimization technology, applied in steam/steam condensers, direct contact heat exchangers, water shower coolers, etc. Unreasonable methods, etc.

Inactive Publication Date: 2011-04-06
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional spray humidification system has the following problems: the design of the nozzle is unreasonable, and the atomization effect of the desalted water is not good; the water mist covers the heat dissipation tube bundle unevenly; The degree of water mist filling in the space of the air-cooling unit is small, and the selection of other parameters in the system also affects the vacuum degree of the condenser

Method used

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  • Optimization method of spraying humidification system of direct air condenser
  • Optimization method of spraying humidification system of direct air condenser
  • Optimization method of spraying humidification system of direct air condenser

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Embodiment Construction

[0039] The composition of the spray humidification system in which the nozzles of the direct air-cooled condenser are arranged in a plane will be described in detail below in conjunction with the embodiments. The condenser of a direct air-cooled unit is composed of multiple air-cooled units. For example, the condenser of a 300MW direct air-cooled unit generally has 24 or 30 air-cooled units, and the condenser of a 600MW direct air-cooled unit generally has 56 or 64 air-cooled units. The structure and working principle of each air-cooling unit are the same, so the arrangement of atomizing nozzles in the spray humidification system of each air-cooling unit is the same, and it is only necessary to optimize and study the spray humidification system of a single air-cooling unit.

[0040] figure 1 It is a schematic diagram of the structure of the spray humidification system with direct air-cooled condenser and air-cooled single unit. In the spray humidification system, the nozzles ...

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Abstract

The invention relates to an optimization method of spraying humidification system of a direct air condenser, which is used for improving the vacuum degree of the condenser and ensuring the safe and economic operation of a generator unit. The invention adopts the technical scheme that the working performance of the air condenser under a traditional spraying humidification system is simulated through numerical values, and the influence of the distance from a nozzle to a heat transferring surface, the mounting height and the spraying direction angle of the nozzle on the pressure of the air condenser is analyzed so that the optimal value ranges of the parameters are obtained and the optimal arrangement mode of the atomizing nozzle is confirmed. The invention is used for optimizing the distance from the nozzle to the heat transferring surface and the mounting height and the spraying direction angle of the nozzle through simulating the working performance of the air condenser under the traditional spraying humidification system through the numerical values so as to acquire the optimal value ranges of the parameters, confirm the optimal arrangement mode of the atomizing nozzle, improve the vacuum degree of the condenser to the maximum extent and ensure the safe and economic operation of the generator unit.

Description

technical field [0001] The invention relates to an optimal configuration method for a spray humidification system of a direct air-cooled condenser of a power plant, which belongs to the technical field of thermal power generation. Background technique [0002] The direct air cooling unit directly uses the ambient air to cool the exhaust steam of the steam turbine, and its cooling capacity depends on the temperature of the air entering the air-cooled condenser. In hot summer, due to the high natural ambient temperature, the cooling capacity of the air-cooled condenser decreases, which affects Safe and economical operation of the unit. [0003] In order to reduce the inlet air temperature of the air-cooled condenser (that is, the air temperature at the outlet of the air-cooling fan) in summer and enhance its cooling effect, many direct air-cooled generator sets have adopted a spray humidification system, that is, a number of desalted water atomization nozzles are arranged near...

Claims

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Application Information

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IPC IPC(8): F28B1/06F28F25/06
Inventor 周兰欣李卫华张学镭丁千玲
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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