Counterflow Closed Circuit Cooling Tower

I. Overview

Counterflow closed-loop cooling towers, named due to the opposite direction of cold and hot mediums, spray water from top to bottom, and air flows at high speed from bottom to top. Mainly composed of heat exchange coils, spray water system, exhaust system, and framework shell.

II. Process Workflow

The spray pump draws water from the sump, pumps it to the upper part of the heat exchange coil, where it is sprayed in an umbrella-like pattern, covering the outer surface of the pipe material continuously and evenly, forming a thin water film. Part of the water absorbs the heat from the cooled medium inside the pipe, turning from liquid to vapor, evaporating and carrying away heat. The cooled medium inside the pipe is cooled down or condensed into a liquid, and the water that does not evaporate falls back into the spray water sump.

Exhaust System: The roof fan is an intake type, drawing air from inside the tower and exhausting it outside. Cold, dry air outside the tower enters through the inlet grille after passing through a filter to remove debris. It flows upward from the bottom of the heat exchange coil, carrying away the evaporated water vapor, increasing the humidity and temperature of the air, which is then exhausted outside by the fan.

In the sprinkler trough, a float valve is installed. When the water level is low, it automatically replenishes the supply to ensure a consistent water level in the trough.

Electrical control, online detection of the outlet temperature of the cooled medium, feedback to the data processing center, automatic control of the spray pump and fan start/stop based on the temperature of the cooling medium, to achieve energy-saving goals.

Section 3: Reverse Flow Closed Circuit Cooling Tower Operation Principle

1. Internal Recirculation: Recirculating water is heated after heat exchange with heat source equipment and then enters the surface cooler. It undergoes inter-wall heat exchange in the cooler, and the cooled recirculating water is then pumped back to the heat source equipment.

2. External circulation: Sprinkler water is transported from the reservoir to the sprinkler system, where it sprays out and contacts the surface cooler for evaporation heat exchange. The humid steam is exhausted through the fan, while the non-vaporized sprinkler water falls back into the reservoir and is then pumped back into the sprinkler system for another cycle.

Four: Features of Counterflow Closed Circuit Cooling Towers

1. Compact Structure: Compared to crossflow towers, the product structure is more compact with more coil surface area for heat dissipation, making it more suitable for cooling projects with smaller temperature differences and higher flow rates.

2. Overall System: Due to the compact footprint of the cooling tower, combined with the addition of a circulating pump, it can be made into an integrated unit for easy mobility.

3. Application Scope: Due to the compact tower design, it can be placed in workshops, making it particularly suitable for medium-frequency power supply cooling and mechanical water jacket cooling. It is especially suitable for projects with smaller temperature differences, such as the cooling of a group of water source heat pump units.

V. Our Advantages

Focused for 21 years, our expertise stems from our dedication, offering rich experience and top-notch quality.

19 patents, patent-protected, reliable technology, excellent performance, stable operation

40 acres of land, robust strength, powerful backing, long-term collaboration, worry-free after-sales service

V. Our Advantages

Focused for 21 years, we are specialized due to our focus, boasting extensive experience and top-notch quality.

19 patents, patented protection, reliable technology, excellent performance, stable operation

40 acres in size, robust strength, solid backing, long-term collaboration, worry-free after-sales service