Structure parameter setting method of air deflector of air inlet of cooling tower

Abstract

The invention relates to a structure parameter setting method of an air deflector of an air inlet of a cooling tower. The structure parameter setting method comprises the following steps of step 1, setting the cooling number range of the cooling power and constructing an error function and a target function according to the calculated cooling number and the given cooling number range; step 2, encoding parameters by a genetic algorithm, serving genic values on chromosomes as structure parameters of the air deflector and defining a parameter variation degree function to serve as a selection criterion of an initial population; step 3, performing conversion on the target function to generate a fitness function; step 4, performing genetic operation according to the fitness to generate a new filial generation, substituting the new filial generation into a BP (Back-Propagation) neural network, and calculating the cooling number; step 5, determining whether termination conditions are met or not, outputting the structure parameters of the air deflector if yes and saving the optimum portion of the generation of population otherwise, entering the next generation of genetic transformation and returning to the step 4. According to the structure parameter setting method of the air deflector of the air inlet of the cooling tower, the structure parameters of the air deflector are optimized through the neural network and accordingly the optimum cooling effect of the cooling tower is achieved and the optimum parameter is determined.

Description

technical field [0001] The invention belongs to the technical field of cooling towers, and in particular relates to a method for setting structural parameters of an air deflector at an air inlet of a cooling tower. Background technique [0002] Cooling tower is a very common water recycling equipment. Its main function is to exchange heat between cooling water containing waste heat and air in the tower to reduce the water temperature to the required temperature for recirculation. There are many factors that affect the cooling effect of the cooling tower. Among them, the ambient side wind affects the cooling performance of the cooling tower to a large extent. Many cooling towers adopt the method of installing an air deflector at the air inlet of the cooling tower to improve the air inlet effect of the cooling tower. . The installation angle, length, quantity and shape of the air inlet deflector will have different results on the cooling effect of the cooling tower. For exam...

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Problems solved by technology

For example, if the installation angle of the wind deflector is not suitable, the side wind enters the rain area of ​​the cooling tower along this angle, forming a stable rotating updraft in the rain area of ​​the cooling tower, and the air flow forms a vortex to rotate in the center under the guidance of the wind deflector The airflow does not pass directly through the rain area, so that there will be no draft, and the residence time of the airflow in the tower will be increased, which will affect the cooling effect of the cooling tower

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