The Need for Something Better than just Wind Ventilators. The - - PowerPoint PPT Presentation

The Need for Something Better than just Wind Ventilators.

The Driving Force for Hybrid Ventilation.

The worldwide push to reduce fossil fuel consumption, and the move to higher usage

• f renewable energy sources, has led to an increased demand for natural ventilation

systems to replace traditional mechanical products. However, natural ventilation products, which traditionally use stack effect (ventilation chimneys), or stack and wind forces together (wind driven turbine ventilators), cannot be relied upon to always meet target flow rates at the desired time. And natural ventilators cannot perform against pressure drop greater than 3-5Pa. This means natural vents will not perform where sand trap louvres are the only source for air entry. There is a gap for something more reliable and with a capability to manage pressure losses. But for a recoverable capital cost and on-going low running cost (i.e. energy usage and maintenance).

The Innovative Development

Edmonds, an Australian business with over 80 years experience in natural ventilation products, took their wind driven Hurricane ventilator and added a specially designed e.c. motor in the head. Hurricane

Main patented feature: A motor for operation between a rotor connected to a wind driven ventilator and a stator mounted to the structure.

The Innovative Development

The Value of the Hybrid Innovation.

eco POWER hybrid technology offers:

• Capability to operate in natural wind mode or wind/mechanical.
• Best specific performance (cfm/W) ever recorded for a commercially available mechanical

device (∆p=0)

• Virtually inaudible operation in wind or mechanical modes.
• Unhindered performance in natural mode compared to equivalent unpowered product (i.e.

no reduction in Cd caused by presence of motor).

• No use of fan blades which reduce energy efficiency and create noise.
• Uses specially designed German e.c. motors.
• 0-10v control (or 4-20mA ) available for EP900 (must be programmed pre-sale).
• Power boost can respond to any digital measure such as CO2, VOC, NO, Temp,

Humidity, Anemometer.

• 200-277V AC 50/60Hz.
• Lightweight (constructed primarily from marine grade equivalent aluminium)

The Value of the Hybrid Innovation cont.

ecoPOWER hybrid technology offers:

• A guaranteed flow rate when it is needed. 3-4 times equivalent size Hurricane at Δp=0.
• An enhanced capacity to manage against pressure drop compared with wind ventilators. This leads to

need for less net-free inlet area which is a capital saving to offset the higher cost of ecoPOWER.

40 Pa 20 Pa 10 Pa 0 2,500 5,000 10,000 m³/hr EP400 EP600 EP900

Value Towards LEED Points.

EcoPOWER, which can operate on wind and stack forces alone, and also in mechanical at the world’s best energy efficiency, can be a valuable contributor to LEED points when used alone or as part of a total ventilation system. EcoPOWER is consistent with the major objectives of LEED, namely:

• To have a positive impact on the health of building occupants (by facilitating inflow of

clean, fresh air).

• To save money (EcoPOWER has no operating cost in wind mode and an energy

efficiency in mechanical far lower than comparable size axial fans).

• To promote renewable, clean energy (Eco POWER can operate in natural mode and even

in mechanical mode the forces of the wind can reduce power consumption).

The EcoPOWER Products.

• The available sizes – EP400 (16” throat), EP600 (24” throat), EP900 (36”

throat) for USA. Product Exhaust Rate m³/hr (∆p=0) Power (W) Max. Max. Running Current (A) Noise @3m dB(A) Weight kgs Dimensions eco POWER 400 2,484 59 0.55 46 13.6 22”W x 22”H eco POWER 600 4,356 99 0.71 49 21.0 30”W x 28”H eco POWER 900 10,321 212 0.90 45.5 42.0 43”W x 37”H

Energy Savings. Noise Abatement.

• The table below shows comparison of EcoPOWER against standard axial fans with

shaded pole motors.

Product Type Comparison Power (W) Specific Performance cfm/W Noise @ 3m ⌠dB(A)⌡ Hybrid Axial Fan Hybrid Axial Fan Hybrid Axial Fan EP400 versus 12”, 2p, 1ɸ - axial 68 W 160 W 20.6* 8.8 46 55 EP600 versus 18”, 4p,1ɸ - axial 116 W 480 W 21.6* 5.2 49 60 EP900 versus 25”, 6p,3ɸ - axial 260 W 1080 W 22.6* 4.9 45.5 60

• Power consumption can be further reduced by up to 20% by prevailing winds of 18 mph when

in power mode.