Method for optimizing arrangement of non-equal-interval packing of natural draft cooling tower

By optimizing the non-equidistant patch spacing of the water spraying packing using CFD simulation and a high-precision PC-Kriging proxy model, the problem of insufficient optimization in existing technologies is solved, thereby achieving an overall performance improvement and energy efficiency enhancement of the cooling tower.

CN121787337APending Publication Date: 2026-04-03JIANG XI JIANG TOU NENG YUAN JI SHU YAN JIU YOU XIAN GONG SI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-09
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing technologies fail to fully consider the nonlinear characteristics of gas-water two-phase flow and heat transfer processes in optimizing the arrangement of non-equidistant water-spreading packings. This makes it difficult to achieve global performance optimization, and the process relies on trial and error based on experience, resulting in high costs and limited adaptability.

Method used

By testing the thermodynamic and resistance performance of the water-spreading packing, a CFD simulation model was established. Combined with the PC-Kriging surrogate model and the DIRECT algorithm, the arrangement of non-equidistant patch packing was optimized, the optimal combination of partition radii was accurately obtained, and the outlet water temperature was reduced.

Benefits of technology

The system optimization of non-equidistant water-split packing material has been achieved, which significantly reduces the outlet water temperature, reduces the cold end heat loss of thermal power units, improves energy utilization efficiency, and reduces coal consumption for power supply.

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Abstract

The invention discloses a natural draft cooling tower non-equal pitch packing arrangement optimization method, and relates to the technical field of thermodynamic system energy saving and intelligent optimization design, and the method comprises the following steps: obtaining a thermodynamic performance equation and a resistance performance equation of different pitch packing; constructing a three-dimensional geometric model based on the geometric parameters of the natural draft cooling tower, and establishing and verifying a CFD simulation model; performing simulation calculation on the initial sample points to obtain response values and an initial sample set; constructing an agent model, and establishing a mapping relation between the initial sample point and the response value; performing prediction precision evaluation on the agent model; global optimization is carried out on the agent model meeting the prediction precision requirement, and an optimal non-equal slice pitch partition radius combination is output. The method can effectively solve the problem that in the prior art, scientific and quantitative optimization is difficult to conduct on the non-equal-interval arrangement structure, is suitable for arrangement design of the cooling tower packing with any partition number, and has good engineering application prospects.
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Citation Information

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