A Check Calculation Method for Mixed Flow Closed Cooling Tower

Abstract

The invention provides a mixed-flow closed-type cooling tower checking and calculation method. According to the environmental meteorological conditions and cooling requirements, the specifications of the heat exchange tubes are selected, and the coil structure is set according to the production data, including the horizontal tube center distance and the longitudinal tube center distance. The number of layers of tubes, the inclined design of heat exchange tubes, etc., the structural form and size of packing, the air volume of design fans, and the amount of spray water are used for thermodynamic analysis based on energy conservation, basic formulas of heat transfer and empirical formulas for heat transfer and mass transfer of heat exchange tubes. During the mass transfer process in the wet area, calculate the heat transfer coefficient and mass transfer coefficient of the coil to obtain the outlet temperature of the cooling fluid of the closed cooling tower, the average temperature of the spray water, the temperature of the air leaving the tower, the moisture content, the evaporation of the spray water, and the amount of water replenishment and other parameters. The invention adopts iterative calculation idea, improves the accuracy and standardization of the design process, can not only verify the rationality of the design of the mixed-flow closed tower, but also guide and analyze the causes of operation problems such as the substandard cooling capacity of the mixed-flow closed tower.

Description

technical field [0001] The design method of the invention is suitable for checking calculation of mixed-flow closed cooling towers, and belongs to the field of cooling tower design. It is especially suitable for a closed-type cooling tower with an upper coil and lower packing arrangement, the top of the coil area enters the air, and the fill area enters the air from the side. Background technique [0002] The mixed-flow closed cooling tower has a good cooling effect, saves the use of coils, saves manufacturing costs, and has broad market prospects. However, the domestic mixed-flow closed tower calibration calculation method is still immature, resulting in unreasonable design of mixed-flow cooling towers, resulting in substandard cooling effects or high cost of consumables, resulting in waste of resources. [0003] In the mixed-flow closed cooling tower, the heat exchange coil and the filler are its core components. The determination of its size involves complex calculations...

AI Technical Summary

Problems solved by technology

However, the domestic mixed-flow closed tower calibration calculation method is not yet mature, resulting in unreasonable design of mixed-flow cooling towers, resulting in substandard cooling effects or high cost of consumables, resulting in waste of resources

[0003] In the mixed-flow closed cooling tower, the heat exchange coil and the filler are its core components. The determination of its size involves complex calculations. Inaccurate calculations will not be able to accurately check the cooling tower and cannot guarantee the performance of the cooling tower.

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