Open Cooling Tower Introduction

Open cooling towers dissipate heat through natural convection or with the assistance of fans.Cooling WaterWithAirPerform heat exchange.Cooling WaterForm a film in the filling layer.

In contact with air, heat is transferred to the air, causingCooling WaterTemperature drops. The cooled fluid is then discharged from the bottom of the tower for reuse or discharge.

Principle of Open-Circuit Cooling Towers

The basic principle of an open cooling tower is that dry (low enthalpy) air is drawn into the tower through the inlet grille by the fan's action.

High-temperature water molecules, with a high saturated steam partial pressure, flow towards the lower-pressure air. Wet and hot (high enthalpy) water is sprayed into the tower from the sprinkling system. When the water droplets come into contact with the air,

On one hand, due to direct heat transfer between air and water, and on the other hand, due to the pressure difference between the water vapor surface and the air, evaporation occurs under the influence of pressure.

By transferring sensible heat from water through heat exchange with unsaturated dry air, part of the water evaporates, thereby removing latent heat from the water, achieving the purpose of cooling the cooling water.

Open Cooling Tower Operating Principle Diagram

Open Cooling Tower Features

Simple structure, low cost

The open cooling tower has a relatively simple structure, primarily consisting of a fan, stainless steel blades, a main shaft, and a carbon steel volute.

The cost is relatively low.In the later stages of cleaning, maintenance, and inspection, it is also quite convenient. Additionally, this type of cooling tower is a commonly used device among early cooling equipment.

Therefore, whether in terms of technology or scale, it is quite mature.

Cooling water is prone to contamination and has high environmental requirements.

Open cooling towers are susceptible to contamination from external environmental factors, such as dust, bacteria, and microorganisms, due to the contact between water and air. These pollutants can affect the quality of the cooling water.

Clogs and corrosion in the cooling system may occur, along with potential environmental contamination.