Evaporative cooling system and operation method thereof

Abstract

The invention relates to an evaporative cooling system and an operation method thereof. The system comprises an air dehumidification tower, an evaporative cooling device and an absorption solution regeneration tower, a first filler layer, a concentrated absorption solution spraying device and a diluted absorption solution collecting box are arranged in the air dehumidification tower, a first air introduction port is formed between the first filler layer and the diluted absorption solution collecting box, the evaporative cooling device comprises a water spraying device, a heat transfer tube bundle, a process fluid introduction pipeline, a process fluid introduction pipeline, a water collecting tank, a dry air introduction port, a wet air introduction port and a spraying water circulating pipeline, and a second filler layer, a dilute absorption solution spraying device and a concentrated absorption solution collecting box are arranged in the absorption solution regeneration tower. According to the system, the air dehumidification tower is arranged to dry air, the dry air is supplied to the evaporative cooling device to cool the process fluid, the cooling temperature which the process fluid can reach is substantially reduced, and the effects of energy conservation, emission reduction and cost reduction are achieved.

Description

technical field [0001] The invention relates to the technical field of thermal energy engineering, in particular to an evaporative cooling system and an operating method thereof, in particular to an evaporative cooling system utilizing industrial low-temperature waste heat and waste heat of a process fluid and an operating method thereof. Background technique [0002] Conventional evaporative coolers are limited by the humidity of the outside air, that is, the wet bulb temperature, especially in summer in the south, and usually can only cool the process fluid to around 35-40°C. For the case where the process fluid needs to be cooled to a lower temperature, only a compression refrigeration system can be used for secondary cooling, and the energy consumption and cost are relatively high. [0003] On the other hand, industrial fields that require process fluid cooling often emit a large amount of low-temperature waste heat, but cannot be effectively utilized due to the lack of ...

AI Technical Summary

Problems solved by technology

[0002] Conventional evaporative coolers can only cool the process fluid to around 35-40°C due to the limitation of the external air humidity, that is, the wet bulb temperature, especially in the southern summer.

For the case where the process fluid needs to be cooled to a lower temperature, only a compression refrigeration system can be used for secondary cooling, and the energy consumption and cost are high

[0003] On the other hand, industrial fields that require process fluid cooling often emit a large amount of low-temperature waste heat, but cannot be effectively utilized due to the lack of economically feasible utilization technologies

Images