High-efficiency motors reduce electrical consumption of fan-coil units

FCUs
The electrical power consumption of Ability fan-coil units can be more than halved using electronically commutated motors from ebm-papst — with considerable benefits on installed chiller capacity.
A range of fan-coil units using electronically commutated fan motors has been introduced by Ability Projects. Available as 2- and 4- pipe versions, they use ebm-papst’s high-efficiency DC motor technology, which offers infinitely variable speed. Using these motors considerably reduces the electrical power consumption of these fan-coil units. At a typical duty point, the electrical consumption is said to be reduced by 50 to 75% — representing a reduction from, say, 210 W using an AC motor to 60 W for a unit using two fans. These new motors also run cooler than AC motors, so that less chiller capacity is required. Ability allows 80 W of chilled water per fan to handle heat from motors, and managing director Peter Lowther tells us, ‘On a project of a hundred fan-coil units, the number of fans used would normally be around 250, so that 20 kW of chiller output is required to offset motor heat in the fan-coil units. For a project of 500 fan coils, the chiller output could potentially be oversized by 100 kW.’ Evolution technology, as it is called, can be incorporated into nearly all Ability’s FCUs — horizontal and vertical, waterside and airside. It can be retrofitted into many FCUs previously supplied with AC motors.
Related links:



modbs tv logo

ECA urges careful planning amid ongoing materials shortage

The ECA is urging its Members, as well as the wider industry, to continue to exercise caution and plan as far ahead as possible on projects involving cable management systems (CMS).

George Clarke to open BESA Conference

The Building Engineering Services Association (BESA) has confirmed that this year’s National Conference will take place on November 3 and 4 and will once again be a ’virtual’ event.