Technology Key Performance

Danfoss and Novenco installed a high efficiency AHU technology (Zerax EC+) in the building. The technology delivers the highest “wire-to-air efficiency” of 80-85% and energy savings of 40-60% in the fan system of a typical AHU with the utilisation of high efficiency Danfoss VSD that has motor independence technology, high efficiency Zerax Fans and high efficiency permanent magnet motor. The technology replaced fan, motor and VSD of an existing belt driven AHU on the 12th floor of KBT building and the performance could be compared between the two.

Level 12 AHU Fan Efficiency

_{Before Improvement}

0.433 W/CMH

Level 12 AHU Fan Efficiency

_{After Improvement}

0.230 W/CMH

Achieved Savings

_–

46.8%

Estimated Annual Fan Energy Consumption

_{Before Improvement}

31.2 kWh/m²/year

Estimated Annual Fan Energy Consumption

_{After Improvement}

14.9 kWh/m²/year