Filter Talk - Volume 8 / Number 2 - Fall 2010
THE POWER OF THE SUN IN YOUR HVAC UNIT
Filtration Group has long been known as an industry
leader in providing air filtration products for removing
harmful or unwanted particulate and contaminants.
What you may not know is that Filtration Group also has
the ability to supply a wide variety of state of the art
products for destroying biological contaminants for both
air and object purification applications. These
contaminants include mold, bacteria, viruses, allergens
and other pollutants which may not be captured by
traditional air filtration products.
THE SUN AND UV RAYS The Sun delivers specific UV wavelengths that destroy
biological contaminants that are introduced into the
atmosphere. Just like the Sun’s UVC rays, VioStar UV
systems produce the exact UV light wavelengths,
bringing the same natural process into building
environments. VioStar UV Air and Object Purification
Systems continuously destroy the biological
contaminants as they circulate through the building or
grow on cooling coils, resulting in a true whole-building
air treatment system.
UVC LIGHT The UVC (254 nm) light produced by VioStar UV Systems
is the same UV wavelength light produced by the Sun.
The UVC wavelength attacks the microorganism on a
molecular level deactivating and destroying the
contaminant. Unlike conventional UV “sticklights” on the
market, VioStar Bio-Wall and Crystal Coil Systems use a
patented process designed to deliver the maximum UV
dosage to the desired target.
"WHAT DO YOU WANT TO TREAT, THE AIR OR COIL?" Using Ultraviolet energy to destroy biological
contaminants may be rooted in science, but how do we deliver the ultraviolet intensity needed to destroy the
biological contaminants that may be traveling through the building's ventilation system or the mold growing on an evaporator coil?
Now we have a chance to revisit the question, "air or coil"? One can be very successful treating both applications when UV is applied correctly. If an end-user is expecting IAQ benefits
from UV systems mounted on a coil, they could be disappointed to find out that the results
may be nominal. As explained in Chapter 16 of the ASHRAE Handbook, the benefits to UV lights
mounted on a coil are limited for the most part to maintaining system cleanliness, improving energy
efficiencies and improving IAQ resulting from a dirty coil. Improving a building's IAQ resulting from other sources
besides a dirty coil however is not one of these benefits.
MAKING AN EFFECTIVE PRODUCT RECOMMENDATION Sizing a commercial UV job is much more than just
installing a UV lamp into a duct or mounting one onto an
evaporator coil. Various factors need to be considered
such as air temperature, humidity, evaporator coil
dimensions, air velocities, upstream or downstream coil
side installation, duct size, percentage of fresh air, target
biological contaminants, desired kill rate, UV lamp aging,
lamp fouling and lamp cooling when properly sizing a UV
installation. Only when these factors are considered can
we move forward in making an appropriate UV
equipment sizing proposal.
Filtration Group has developed sizing software for both
Bio-Wall air purification and Crystal Coil coil cleaning
applications taking into account all of the variables
mentioned above influencing microorganism destruction
rate. By inputting these variables into the software,
Filtration Group can provide a representation of how the
UV system will actually perform in ‘Real-Time’ after
installation. This is a valuable tool. The end-user will
have at their disposal the destruction rate for any
particular contaminant as well as how and where to place
the UV system(s). When properly sized, UV air and object
purification technologies can dramatically improve air
quality and reduce maintenance costs while improving
FILTRATION GROUP ANNOUNCES JOINT VENTURE FILTRAIR ASIA
Filtrair of Heerenveen, The Netherlands and Spectrum Filtration of Kolkata, India
are pleased to announce that the companies are planning to form a joint
venture Filtrair Asia. The company will produce and market the Optipleat product line in India. Filtrair will
supply the manufacturing equipment and provide the engineering support to the patented product. Spectrum
Filtration will be responsible for production, the facility and managing the business. Both parent companies will
support the marketing of the product.
“This joint venture between Filtrair and Spectrum Filtration
will establish our second manufacturing JV in Asia
and our first in the rapidly growing market of India. Our
relationship with Spectrum goes back over ten years and
we are looking forward to strengthening the partnership
for years to come,” notes Brandon Ost, CEO Filtration
Spectrum Filtration Headquarters - Kolkata, India
The Optipleat has an excellent performance reputation in
applications as varied as air filtration for gas turbines to
air filtration in automotive paint booths, hospitals, and
pharmaceutical facilities. The Optipleat provides high
levels of fine airborne particulate removal with exceptionally
low resistance to air flow.
NEW ORLEANS CONVENTION CENTER IMPROVES AIR QUALITY WHILE REDUCING ENERGY COSTS
The New Orleans Ernest N. Morial Convention Center (MCCNO) is located along the mighty
Mississippi River and within walking distance of the French Quarter. MCCNO is the nation’s sixth largest
convention center and consistently ranks in the top 10 for hosting the most national conventions and tradeshows annually
since its 1985 opening. It’s the engine that drives the Crescent City’s hospitality industry.
THE PROBLEM The MCCNO HVAC system design required MERV
8 2” pleated prefilters followed by MERV 11 cartridge filters which are 12” deep, a traditional
combination for HVAC systems from that era. They were required to order truck loads of filters
to get the best price which overwhelmed available storage space. Boxes of bulky air filters were
stored in hallways, break rooms, offices, and basically in any space available.
Another issue was the labor costs required to handle the filters during stocking, installation,
and removal. Cartridge filters are heavy and hard to handle. Temporary labor costs reached
approximately $28,000 for the installs. MCCNO also has a strong commitment to the
New Orleans and communities to continue to improve “Green” practices.
Specific major focus components include; Waste Reduction, Energy Conservation, and Clear Air
THE SOLUTION Considering the storage, desired efficiency, handling, and disposal issues
Bill Faulkner, market development specialist for Filtration Group recommended the new Nexfil™ MERV 13
2” commercial grade high efficiency mini-pleat filter. This filter is constructed with
state-of-the-art synthetic filter media in a super compact design allowing it to replace much larger, heavier filters.
The Nexfil has an exceptionally low resistance to air flow, allowing the MCCNO to upgrade to the desired MERV 13 efficiency level while actually
lowering energy consumption.
RESULTS Nexfil’s compact design eliminated the storage
and handling problem. The dirty filter waste
volume will dramatically decrease (over 50%) in
this scenario. Temporary labor costs were also
The low resistance allowed MCCNO to reduce
energy consumption in addition to improving
IAQ. The clean filter pressure drop reduced from
approximately 0.75” wg to 0.35” wg. MCCNO has
a Computerized Energy Management System
and variable volume HVAC system which will
adjust for the reduced pressure and save tens of
thousands of dollars on energy costs. The
advanced design of the Nexfil helps progressive
facilities like MCCNO solve problems and
advance the commitment to improve “Green”
practices by lowering energy consumption,
improving IAQ, and reducing the waste stream.