AQUAFAN ENGINEERING PRINCIPLESMotorless Hydro-Powered Cooling Tower Technology

AQUAFAN+Turbine Powered Cooling Tower with Backup Motor

Principals

• AQUAFAN+ is equipped with turbine that converts residual water pressure into fan rotation

• Backup motor delivers extra power when the cooling demand requires extra performance.

Key data

• Cell modules of 3.6 meter with 2.4 meter fans

• Rotation generated by turbine up to 250 RPM (depending on water pressure available)

• Rotation required up to 475 RPM• Total fan shaft power required up to 7.5

kW

MechanicsOption 1

• Motor controlled by VFD• VFD keeps motor free running up to 250

RPM with negligible power consumption• Above 250 RPM motor adds fan speed:

VFD switch of and motor scales up to max RPM immediately

MechanicsOption 2

• Motor controlled by VFD• VFD adjusts RPM until required water

temperature is achieved• Turbine assists motor in generating fan

speed

Mechanics

• Motor controlled by VFD• VFD keeps motor free running up to 250

RPM with negligible power consumption• Above 250 RPM motor adds fan speed:

– VFD controlled and in relation cooling demand (option 1)

– Above 250 RPM VFD switch of and motor scales up to 475 RPM immediately

Bockwoldt Project

• Scope of supply:– VFD + programming– RPM meter– Motor

• WATCO supply:– Cooling tower– Turbine / PT 100

• Provide quotation and timing for the project.