Unique features of HYAC hybrid air coolers

WetSurface

Maximum cooling efficiency and lowest possible outlet temperature

WetSurface technology offers several distinct benefits:

• A WSAC cooling system is compact and has low power consumption thanks to its high cooling efficiency.
• The process medium output temperature is as low as possible thanks to the single approach to the wet bulb temperature.

Wet surface air coolers vs traditional air-cooled heat exchangers

Unlike traditional air-cooled heat exchangers, the tube bundles in a WSAC are sprayed with water and use evaporative cooling to reject the heat from the process medium. This results in superior cooling and a WSAC is both significantly smaller, has a lower power consumption and lower output temperature than an air cooler.

Since the tube bundles are sprayed directly with cooling water, a WSAC system has a single approach to the wet bulb temperature, meaning the process medium output temperature is as low as possible. A WSAC system is capable of cooling the process medium to a temperature just 2.7°C (5°F) above the surrounding wet bulb temperature.

Wet surface air coolers vs cooling towers

A cooling tower/heat exchanger system, on the other hand, has two approaches to the wet bulb temperature due to the intermediate cooling water loop. This means the process medium output temperature will always be higher and an extra chiller stage is required to achieve the same results as with a WSAC.

The cooling water spray and air travel in the same direction (co-current draft), which creates a uniform water film on the tubes that minimizes corrosion.