Page 26 - Climate Control News September 2021

Air Movement, Fans & Ventilation
Fashion forward purifiers
INDUSTRIAL DESIGNER KEVIN Chiam has created a 3D-printed wearable air purifier that is deigned to remove air pollution from around the user using a water vapour.
Airtomo is a small clip-on device that can be attached to a bag, pocket or shoe, and comes in a series of bold colours.
Chiam has created a working prototype for Airtomo and is developing concepts for purifiers in ankle and neckband form.
Airtomo works by releasing atomised water va- pour into the air. This ultra-fine mist of water drop- lets binds to particulate matter in the air, forming a heavy aggregate that drops to the ground.
The water vapour is fine enough that it doesn't get the user's clothes damp, ex- plained Chiam, and the pollution particles on the floor can then be swept away.
Designed to be used on the go, Airtomo is charged with a micro-USB cable and
can be replenished with water wherever necessary.
Airtomo is made from a combination of 3D-printed parts along with a be- spoke circuit boCard, a battery and an ultrasonic transducer disc that atomis- es the water into fine droplets.
Chiam also plans to make Airtomo modules that can be placed on the walls to improve the air quality.
A small scout module would detect movement from passing commuters us- ing a passive infrared sensor. After re- ceiving this information via WiFi, the main module would release water va- pour into the air.
ABOVE: The purifiers come in a range of bold colours.
LEFT: Airtomo is a small clip-on device that can be attached to a bag, pocket or shoe.
Higher speeds equal greater air flow
CCN TAKES A closer look at the new RadiPac series from ebm-papst which is available in two versions.
Ventilation and air conditioning fans are con- stantly being developed, as user demand for more control options and energy efficiency in particular are increasing rapidly.
Legal requirements, increasing awareness of environmental issues and the potential for sav- ings in operating costs also contribute to this.
With the new RadiPac series, ebm-papst has succeeded in significantly improving the exist- ing centrifugal fans yet again.
The latest generation of RadiPac fans operates at considerably higher efficiency levels. Moreo- ver, higher speeds ensure greater air flow and higher pressures, enabling even high-pressure applications to be covered.
The impeller, developed according to the lat- est aerodynamic findings, means that flow loss- es are drastically reduced and noise generation is decreased further.
Depending on the operating point, this is be- tween 3 and 7 dB(A) lower than those of the previ- ous series. A high-strength, glass-fibre reinforced composite material was used, enabling a com- plex shape and ensuring the impeller's stability.
The EC motors integrated into the fans in the power range from 500 W to 8 kW achieve efficiency levels in accordance with the re- quirements for efficiency class IE5 set in IEC/ TS 60034-30-2.
The new 8 kW drive sets high standards in terms of its high-performance electronics and more com- pact dimensions. It has been expanded to include a configurable interface, including a MODBUS RTU interface and an integrated resonance sensor. This resonance sensor measures oscillations and vibra- tions and reports disturbances before the fan is damaged - truly in the spirit of GreenIntelligence.
The plug & play RadiPac solution has a compact support bracket for simple wall mounting.
“THE LATEST GENERATION RADIPAC IS EVEN QUIETER THANKS TO NEW IMPELLER GEOMETRY.”
In order to suit different installation situa- tions, the new RadiPacs are available in a stand- ard and short version. Both versions are available as a motor-impeller combination or as a ready- to-install plug & play solution in a sturdy sup- port bracket for easy wall mounting.
As an option, there is a completely enclosed FlowGrid air inlet grille that reduces noise-gen- erating turbulence in the inflow and also func- tions as a guard grill.
Retrofitting is generally possible in the appli- cation without any modifications to the design, as the new fans are geometrically smaller despite higher power in the same design size.
Sizes 310 to 630 with air performance of up to 20,000 m3/h and a static pressure increase of well over 2,000 Pa will be available from October 2021.
Sampling is possible on request now.
CLIMATECONTROLNEWS.COM.AU
26