Method for saving water and preventing fog and icing of evaporative heat-exchange device and filler assembly

Abstract

The invention belongs to the field of evaporative heat-exchange devices. The method for saving water and preventing fog and icing of an evaporative heat-exchange device controls the evaporation latent heat of the spray water and the radiating heat of air, reduces the evaporation capacity of the spray water when the heat-exchange device runs in winter, and improves the radiating heat of cold air by changing the spray water distribution area and the ventilation heat-exchange way of a filler surface of the heat-exchange device. The invention also provides a new process regulating the filler evaporative water quantity and the temperature and relative humidity of air on a fan outlet; by changing the circulating area of the spray water on the filler surface, and utilizing the cold air with low enthalpy in winter to improve the radiating heat of the air and control the evaporative water quantity, the proper temperature of the spray water is maintained, the relatively higher temperature and relatively lower humidity of the air on an exhaust outlet are guaranteed, and the fog generated by the condensation of water vapor on the exhaust outlet is reduced.

Description

technical field [0001] The invention belongs to the field of evaporative heat exchange equipment, and particularly relates to a heat exchange method of the evaporative heat exchange equipment. In addition, the invention also relates to a heat exchange packing assembly. Background technique [0002] Evaporative heat exchange equipment includes open towers, evaporative condensers or evaporative fluid coolers, etc., such as figure 1 , figure 2 and image 3 As shown, it is a wet heat exchange equipment that uses forced ventilation to partially evaporate the circulating water sprayed on the surface of the filler, take away the heat, realize the cooling of the circulating water, and maintain a lower water temperature. Because it uses partial evaporation of spray water to achieve cooling, compared with dry heat exchange without water evaporation, it has high heat exchange efficiency and low cost, and can reduce the circulating water to close to the air wet bulb temperature, and ...

AI Technical Summary

Problems solved by technology

Moreover, due to the relatively high relative humidity of the air at the outlet of the fan, when it is discharged into the low-temperature and humid atmosphere, white fog will occur, which will have varying degrees of impact on the environment.

[0003] At present, the solution to the above problems is mainly to use electric heating to maintain the spray water temperature higher than the freezing temperature. However, in cold winter areas, severe freezing often occurs at the air inlet of the cooling tower. The main reason is that the environment If the temperature is too low, the temperature of the spray water at the air inlet is too low, and continuous freezing occurs. The increasing thickness of the ice layer will seriously affect the normal function of the packing layer, and additional energy consumption will be required, consuming a lot of unnecessary water evaporation. The defogging process is mainly to heat up part of the air at the air inlet, or heat the air that has been humidified by the filler to increase its relative humidity, reduce the dew point temperature of the outlet air, and reduce the water mist pollution to the surrounding environment

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