Reducing Odors in Waste Rooms

Reducing Odors in Waste Rooms

Facilities, apartments and condominiums often suffer from odors from the garbage rooms that migrate from the holding area to the garage or on the floors through the chute system.

Different stand-alone systems can be used to eliminate these problems by destroying bacteria and removing chemical and biological odors. The objective is to rapidly recirculate the air in the room in front of UV-C to break down bacteria’s DNA, and in front of UV-V to oxidize the chemical decay molecules while minimizing the residual ozone.

MANUAL SETTING EQUIPMENT

The Sanuvair® S600:
This stand-alone UV air purifier incorporates a variable blower of 300 to 600 cfm, an aluminum mesh washable prefilter to capture particulates and 3 full UV-V oxidizing lamps. According to the customer’s needs, one, two or three UV-V 6.5’’ U shaped  lamps are lighted up.

Room size:  up to 8,000 cubic feet

Suggested installation Sanuvair® S600:

AUTOMATIC SETTING EQUIPMENT

The Sanuvair® S300 OZD:
This stand-alone UV air purifier incorporates a two-speed blower of 220/300 cfm, a 2” pleated prefilter to capture particulates, 1 UVC/UVV lamp and 1 full UV-V oxidizing lamp tied with 20 ft of wiring to an ozone controller set at 0.025 ppm. The controller will sample the air every minute and trigger off the UV-V lamp if more than the set point of ozone is detected. It also comes with 2 extra prefilters.

Room size:  up to 3,000 cubic feet

Suggested installation Sanuvair® S300 OZD:

The Sanuvair® S1000 OZD:
This stand-alone UV air purifier incorporates a blower of 1,000 cfm, 2 x 1” pleated prefilter to capture particulates, 1 UVC/UVV “J” shaped 16” lamp and 1 full UV-V “J” shaped 16” oxidizing lamp tied with 20 ft of wiring to an ozone controller set at 0.025 ppm. The controller will sample the air every minute and trigger off the UV-V lamp if more than the set point of ozone is detected. It also comes with 2 extra prefilters.

Room size:  up to 10,000 cubic feet

Suggested installation Sanuvair® S1000 OZD:

Other articles that might interest you:

Formicary Corrosion & Biofilm Fouling of Cooling Coils

Formicary Corrosion and Biofilm Fouling of Cooling Coils

By Normand Brais, P.Eng., M.A.Sc., Ph.D.

INTRODUCTION

Air conditioning is responsible for substantial electricity consumption and peak demand in most of the United States. Over the past decade, energy conservation researchers have studied air conditioning more and more. Much of this research has focused on the impact of air flow, duct leakage, and refrigerant charge level on cooling performance.

One area, which has been neglected by researchers, is fouling of evaporator and formicary corrosion. Known commonly as ant’s nest corrosion, champagne leaks, or just simply as formicary, the issue presents as a hard to detect leak within the fin pack of an evaporator coil. This tiny leak or set of leaks results in loss of system refrigerant over time. While the incidence of formicary corrosion is low nationwide, it is more prevalent in warm, humid climates found in southern portions of the United States where slimy biofilms coat the coil fins.

 WHAT CAUSES IT

The tunneling action that leads to corrosion is caused by the presence of organic acids mixed with moisture on the copper tube within the fin pack. Two common acids known to cause formicary corrosion are formic and acetic acids. Certain manufacturing oils and lubricants can contain compounds that form these organic acids, but common household items can also breakdown to form formic and acetic acids. These can include building materials like formaldehyde adhesives, foam insulation, and laminates, as well as personal hygiene products like cosmetics, disinfectants, deodorizers, and cleaning solvents. To initiate corrosion, the presence of water is necessary. The corrosion rate is aggravated by the presence of mold biofilm that keeps the fins wet.

 HOW TO REDUCE IT

Every technician will tell you that every time they look at these coils, they are dirty with mold biofilm. A standard part of routine A/C maintenance and residential commissioning is to clean the evaporator coil with a wire brush and detergent or other cleaning chemistry, and to clean the outdoor coil of leaves and other debris. Over the last 20 years, the simple use of appropriate germicidal UV light can prevent this and keep the coil clean and free of any biofilm buildup.

The presence of mold biofilm on cooling coil acts like a water sponge that keeps the fins constantly wet and sticky, which capture and retain particulates and chemical contaminants, thus enhancing the formic acid corrosion rate. When the biofilm is eliminated with an efficient germicidal UV system, the coil is not permanently wet, does not trap and retains as much contaminants, and consequently its corrosion rate is greatly reduced.

                                                                                     Buildup of mold biofilm in lower right hand corner completely blocks air flow

Coils normally foul due to bioaerosols and other biologically active materials, which are ubiquitous in hot climates. This usually also lead to significant indoor air quality problems that can trigger respiratory allergic responses of building occupants.

                                                                        Fungal biofilm growth on a residential (Left) and commercial (Right) cooling coil

The biofilm that causes evaporator fouling and its accelerated corrosion also impacts on the cooling performance and energy efficiency. Large commercial heating and cooling coils have the same problems and are prone to the same type of fouling and consequential corrosion issues. Their lifespan can also be increased notably by using an appropriate UV germicidal system that prevents mold buildup in hot and humid climate.

The first step to take to reduce the formicary corrosion due is to prevent the formation of a biofilm of molds and fungi with an adequate germicidal UV system. Biofilm-free fins will be less susceptible to retain dusts and potentially corrosive compounds, as well as the moisture that activates the corrosion effect.

References

Siegel, Jeffrey, I. Walker & M. Sherman. 2002. “Dirty Air Conditioners: Energy Implications of Coil Fouling” Submitted to the 2002 ACEEE Summer Study on Energy Efficiency in Buildings.

Siegel, Jeffrey A. and W.W. Nazaroff. 2002. “Modeling Particle Deposition on HVAC Heat Exchangers.” Submitted to the Indoor Air 2002 conference.

Siegel, Jeffrey and I.S. Walker. 2001. “Deposition of Biological Aerosols on HVAC Heat Exchangers.”

Other articles that might interest you:

Disinfecting Air & Reducing Ethylene in Cold Rooms

Disinfecting Air and Reducing Ethylene in Cold Rooms

Mold and bacteria can severely impact the quality of meat, chicken, fish, fruits and vegetables that may be stored or prepared in warehouses and cold rooms. Ethylene off-gassing causes fruits and vegetables to prematurely ripen and aged, dramatically shortening shelf-life.

Sanuvox UV IL-CoilCean systems installed facing the cooling coil are designed to bask the coil and air with ultraviolet energy destroying microorganisms including bacteria, mold and viruses while oxidizing and reducing ethylene off-gassing.

With its high efficiency patented air disinfection systems, Sanuvox offers the right solution when the objective is to destroy airborne bio-chemical contaminants (e.g. bacteria, viruses, mold) that may affect the storage and preparation of fish, chicken and meat, as well as destroy ethylene off-gassing that causes produce to ripen faster.

THE EQUIPMENT

Multi-IL CoilClean units are installed facing the cooling coils in the fan coil unit. Each IL unit includes a UV-C/UV-V lamp mounted in an anodized aluminum parabolic reflector. The ballast box incorporates LED status lights for providing lamp status and replacement and can be remotely monitored.

OPERATING THE EQUIPMENT

The fan coil unit recirculates the air where:
1. The UV-C germicidal section of the UV lamp destroys airborne biological contaminants (viruses, mold, bacteria and spores).
2. The UV-V oxidizing section of the UV lamp reduces ethylene, slowing down the ripening process of vegetables and fruits. Coils remain clean and more energy efficient.

SLOWING DOWN THE CONTAMINATION SPREAD WITH UV-C
Produce will degrade due to the rotting process that is caused by parasitic fungi and mold. Food deterioration begins with the breakdown of the cellular tissue by enzymatic action that allows the growth of microbes. Germicidal UV (UV-C) is extremely effective at preventing the reproduction of bio-contaminants because UV-C destroys airborne fungi, molds and spores, limiting the contamination spread from one fruit to another. Meat, fish and chicken are especially vulnerable to airborne biocontamination. UV-C sterilizes the air, destroying contaminants as they circulate within the cold room.

RETARDING THE RIPENING PROCESS WITH UV-V
Photo-oxidation with UV-V can be used to reduce chemicals that trigger the ripening of fruits and vegetables. The life stages of a plant are influenced by plant hormones. An organic compound involved with ripening is ethylene, a gas created by plants from the amino acid, methionine. Ethylene increases the intracellular levels of certain enzymes in fruit and fresh-cut products, which include:

  • Amylase, which hydrolyzes starch to produce simple sugars.
  • Pectinase, which hydrolyzes pectin, a substance that keeps fruit hard.

UV-V oxidizes and thus neutralizes the ethylene molecules released by the ripening process, slowing down the spread of ripening to the surrounding produce. This oxidation process breaks down ethylene into carbon dioxide and water vapor.
Ethylene C2H4 C2H4+ O* -> CO2 +H2O

WHERE TO INSTALL

Many buildings and facilities can be equipped with the IL-CoilCean systems, like cold storage rooms, groceries, meat, fish and chicken storage, preparation facilities, fruit and vegetable retailers, warehousing and transportation.

Other articles that might interest you:

Fruits & Vegetables Surface Disinfection

Fruits and Vegetables Surface Disinfection

Surface contamination of fruits and vegetables is a problem for growers, distributors and retailers. Mold and bacteria can have severe effects causing produce to spoil.

Sanuvox UV IL Food Safe purifiers for food products and their packaging are exceptionally safe and versatile disinfection systems for surface, packaging and conveyor applications designed to bask meat, fish, poultry, fruits and vegetables, baked goods and packaging with UV-C germicidal light. The UV system is extremely effective at destroying surface contamination while extending product shelf-life. Only a few seconds of exposure can achieve up to 99.9999% destruction of common biological contaminants that are problematic in the food industry.

Incorporate the UV fixtures into the production line (i.e. over the conveyor belts) to bask the products and surfaces prior to packaging, maintening a sterile product ready for distribution and consumption.

As the system is incorporated into the production line, the lamps are covered with Teflon, that will trap pieces of grlass in the event of breakage.

When the objective is to prevent and destroy microbial contamination, such as bacteria and fungi that occur naturally on fruit and vegetable surfaces, and are responsible for premature decay, Sanuvox offers the right solution with its high efficiency patented air purification system. The process will leave no residue as is found using chlorine or irradiation treatments with gamma rays. At the producer level, sterilization of fruits and vegetables could reduce the use of pesticides.

THE EQUIPMENT

IL Food Safe purifier for food products equipped with parabolic reflectors and Teflon coated lamps will be positioned equidistant across the conveyor, parallel to it. Computerized sizing programs taking into account the speed of the conveyor and the contaminant(s) to be treated will determine the size of the lamps.

Typical installation:

OPERATING THE EQUIPMENT

The end user will determine the location and design of the lamp assembly enclosure that will attach to
the conveyor guaranteeing there is no direct UV exposure to employees. Fruits and/or vegetables will be exposed for a predetermined period of time to UV light as they move through the enclosure on the conveyor. This predetermined time will be sufficient to sterilize the fruit and/or vegetable pathogens and slow down ripening process.

RESEARCH ON STRAWBERRIES
Researchers from the Department of Food, Science and Nutrition (Laval University, Quebec, Canada) demonstrated that exposing strawberries to ultraviolet light prolongs their shelf life. Freshly picked strawberries exposed to germicidal ultraviolet (UV-C) have retained their freshness for 14 to 15 days, while untreated freshly picked strawberries were “almost done” on the tenth day.

The conclusions from this research have been published in the Food Science Journal. Refrigeration, which slows the growth of microorganisms and fruit ripening, allows a limited but effective mean regarding conservation of strawberries.

“Exposure to UV-C is a very interesting approach to facilitate the marketing and distribution of fresh fruits and vegetables”, says researcher Joseph Arul. This treatment slows the ripening of strawberries: they remain firm longer, their respiratory rate is lower, their color is more attractive and the taste is not altered. “It is believed that exposure to UV-C would kill some mold on the surface of the fruit or, more likely, the treatment would stimulate the defense mechanisms of the produce,” suggests the researcher.

Arul’s team has already demonstrated the benefits of UV-C exposure for the conservation of carrots, broccoli, tomatoes and blueberries.

Arul does not anticipate negative reactions from consumers, unlike gamma irradiated food, or more recently, genetically modified organisms. “The technique is more acceptable to a consumer. In low doses, UV is beneficial. It is a light source and I do not think people have problems with that.”

WHERE TO INSTALL

Many facilities can be equipped with the IL Food Safe, like vegetable growers, fruit and vegetable importers, hydroponic producers, and value-added packagers.

Other articles that might interest you:

Fighting Tobacco Smoke

Fighting Tobacco Smoke

Designated smoking areas, althrough typically spared from working and living spaces, often cause problems with air that may very well circulate in and out of these areas. The smoking area itself may be overwhelmed with cigarette smoke, causing smokers to seek alternative places to smoke.

Sanuvox Technologies offers two units that are effective at removing tobacco smoke from the air and reducing cigarette odors, as well as nicotine and smoke that are so problematic. Unlike conventional technologies, Sanuvox UV systems do not use costly carbon for absorption nor rely solely on filters, which easily become coated with tar and nicotine The proprietory process changes the molecular structure of the tobacco smoke into a fine powder, which is then captured on the filter media. It is recommended that the UV systems be sized to provide a recirculation rate of 6 to 8 air changes per hour.

THE EQUIPMENT

Stand-alone Sanuvair® 300 VOC or Sanuvair® 1000 VOC UV air purifiers that include germicidal and oxidizing ultraviolet lamps, prefilters and a main filter to capture nicotine and smoke. An optional VOC (Volatile Organic Compound) detector can be used with multiple lamps when the number of occupants increases.

Typical installation:

OPERATING THE EQUIPMENT

Sanuvox dual zone UV lamp will reduce odors, nicotine and smoke in the room through recirculation. With the optional UV-V lamp(s) and VOC detector, if the smoke level increases (because there are more smokers), the VOC detector will trigger the additional oxidizing lamp(s), then shut them off when the level decreases. The cycle is repeated, lowering the odor, nicotine and smoke levels, until the maximum reduction is reached.

UNDERSTANDING THE CHEMISTRY
Cigarette smoke is composed mainly of:

  • White ash
  • Nicotine molecules
  • Chemical by-products

Ash will be trapped by the pre-filters. Nicotine will be transformed into a type of yellow powder that will be captured by the prefilters and the main filter. The chemical by-products will be oxidized by the UV process: high frequency UV-V energy activates the organic molecules and accelerates the chemical reaction, resulting in the air being oxidized. Odors are oxidized by the process of photolysis that initiates the breaking of chemical bonds by the action of the ultraviolet light. The oxidation process will reduce odors and chemical contaminants by changing the complex molecular contaminants into CO2 and H2O

SIZING THE EQUIPMENT

Approximately 6 to 8 air changes per hour are required. This reduces the standard of fresh air required by two thirds.

An Sanuvair® S300 VOC unit (300 cfm) will be sufficient for a 1,920 cu.ft. room (12’ X 20’ X 8’) with 9.3 changes per hour.

An Sanuvair® S1000 VOC unit (1000 cfm) will be sufficient for a 9,600 cu.ft. room (20’ X 40’ X 10’) with 7.5 changes per hour.

WHERE TO INSTALL

Many buildings and facilities can be equipped with one of these stand-alone units, like eldercare homes, private homes, poker rooms and casinos, bingo halls, cigar bar, or smoking rooms.

Other articles that might interest you:

Removing Ground Level Odors

Removing Ground Level Odors

Processing activities, as well as maintenance operations, can produce troublesome odors that may affect those working and visiting a site or facility. It may even cause problems for those living in the underline community. These applications include sewage treatment facilities, sump pump operations, excavation, pumping stations, arena ice pits, grease traps, etc.

Sanuvox UV disinfection systems may be outfitted with special oxidation UV Lamp (185nm) that produce high levels of ozone (O3) to effectively combat odors emanating from these various types of applications. The self-contained systems can be located very close to the source of the odor alleviating the issue where it is most concentrated.

When the objective is to to substantially reduce odors generated by a sump pit, such as sewage ditch, sewer pumping stations, residual from ice scraping equipment (Zamboni), or grease traps, Sanuvox offers the right solution with its high efficiency patented air disinfection system.

THE EQUIPMENT

Stand-alone units that will either process air through recirculation in a room or inject a small quantity of ozone directly into the specific containment device to reduce odors.

An ozone controller can be used to limit the residual ozone outside of the containment area to a concentration level lower than the ASHRAE limit (0.05ppm).

Typical Sanuvair® S1000 OZD INSTALLATION:

OPERATING THE EQUIPMENT

The unit purifies the air through recirculation in two ways:
1. The UV lamp germicidal section destroys biological contaminants (viruses, fungi, bacteria) moving through air.
2. The UV lamp oxidizing section reduces the chemical components in the air through photo-oxidation.

PROCESS ON BIOLOGICAL AND CHEMICAL CONTAMINANTS
1-ACTIVATION PHASE: H2O+ O* –> OH* +OH*
Ultraviolet photon energy (170-220nm) is emitted from a high-intensity source to decompose (break-down) oxygen molecules into activated monoatomic oxygen. The rate of production or effectiveness of this process depends on the wavelength and intensity of its source.

2-REACTION PHASE: OH*+P –> POH
The activated oxygen atoms (O*) are then mixed in the airstream; the process will react with any compound containing carbon-hydrogen or sulfur, reducing them by successive oxidation to odorless and harmless by-products. If the activated oxygen atoms outnumber airborne contaminants, there will be the formation of ozone (O3) which will occur following the oxidation of normal oxygen molecules (02).

3- NEUTRALISATION PHASE: (also germicidal) O3+UV(C) –> O2+O*: O+O –> O2

SIZING
The stand-alone units will include an extra oxidizing (UV-V) lamp. In the absence of an ozone controller, a warning label must be provided to the user. Certain conditions may require up to four UV-V lamps in one unit.

WHERE TO INSTALL

Many buildings and facilities can be equipped with the S1000, like municipal sewage treatment plants, municipal pumping stations, ice-snow containment (pit) areas, hotels grease pits, and grey water treatment.

Other articles that might interest you:

Extending Shelf-life & Delivering Exceptional Quality

Extending Shelf-life and Delivering Exceptional Quality

Mold and bacteria can severely impact the delicate payload on its way to storage facilities and retail stores. Ethylene off-gassing causes fruits and vegetables to prematurely ripen and age dramatically, shortening their shelf-life.

Sanuvox technologies offers an exceptional cost-effective mobile air treatment solution that easily incorporates into any truck or tailer designed to destroy airborne bio-chemical contaminants including bacteria, mold and ethylene off-gassing.

With its high efficiency patented air disinfection systems, Sanuvox offers the right solution when the objective is to destroy airborne contaminants, such as bacteria, viruses and mold that may affect the integrity of produce in transit. It also destroy ethylene, which causes produce to ripen faster.

THE EQUIPMENT

The 12V VP900 Interceptor is a small mobile air disinfection unit that can can be mounted in any location within the trailer or truck to sterilize airborne contamination and destroy ethylene gas. The UV system runs continuously bringing down contamination levels on an ongoing basis.

VP900 Interceptor:

OPERATING THE EQUIPMENT

The Interceptor recirculates the air, where:
1. The UV-C germicidal section of the UV lamp destroys airborne biological contaminants (viruses, mold, bacteria and spores).
2. The UV-V oxidizing section of the UV lamp reduces ethylene, slowing down the ripening process of vegetables and fruits.

SLOWING DOWN THE CONTAMINATION SPREAD WITH UV-C
Produce will degrade due to the rotting process. Rotting is caused by parasitic fungi and mold. Food deterioration begins with the breakdown of the cellular tissue by enzymatic action that allows the growth of microbes. Germicidal UV (UV-C) is extremely effective at preventing the reproduction of bio-contaminants. UV-C destroys airborne fungi, molds and their spores, limiting the contamination spread from one fruit to another. Meat, fish and chicken are especially vulnerable to airborne biocontamination. UV-C sterilizes the air, destroying contaminants as they circulate within the cold room.

RETARDING THE RIPENING PROCESS WITH UV-V
Photo-oxidation with UV-V can be used to reduce chemicals that trigger the ripening of fruits and vegetables. The life stages of a plant are influenced by plant hormones. An organic compound involved with ripening is ethylene, a gas created by plants from the amino acid, methionine. Ethylene increases the intracellular levels of certain enzymes in fruit and fresh-cut products, which include:

  • Amylase, which hydrolyzes starch to produce simple sugars.
  • Pectinase, which hydrolyzes pectin, a substance that keeps fruit hard.

UV-V oxidizes and thus neutralizes the ethylene molecules released by the ripening process, slowing down the spread of ripening to the surrounding produce.
This oxidation process breaks down ethylene into carbon dioxide and water vapor.
Ethylene C2H4 C2H4 + O* CO2 +H2O

WHERE TO INSTALL

The VP900 Interceptor can be installed in many places, like trucks transporting fruits and vegetables, cold storage rooms, groceries, fruit and vegetable retailers, or warehousing.

Other articles that might interest you:

Purifying Air in Kennels & Veterinarian Centers

Purifying Air in Kennels and Veterinarian Centers

Illness among animals especially dogs can be significantly higher when many of them are boarded within close proximity, or kept within the same room or building. Airborne illnesses can easily be transmitted from one animal to another. Odors may cause issues when they migrate to other areas and affect staff and visitors.

Sanuvox UV systems are the ideal solution for destroying airborne viruses and bacteria, as well as reducing the concentration of unpleasant odors, such as ammonia produced by animals in kennels, shelters, pet stores and veterinarian clinics. Its proprietary system eradicates biological contaminants (bacteria, viruses, germs and allergens), and destroys chemicals and biological odors.

THE EQUIPMENT

Multiple application UV systems can be used for both stand-alone and duct-mount installations.

As stand-alone units, the P900 is equipped with an 80 cfm blower, the Sanuvair® S300 with a 300 cfm blower, and the Sanuvair® S1000 with a 1000 cfm blower. Sanuvair® S300 and S1000 also come with filters to capture particulates (pet hair, etc.). A dual zone UV-C/UV-V lamp is standard. An “adjustable” oxidizing lamp is available.

As an in-duct unit, the Quattro is installed parallel to the airflow and includes four UV-C/UV-V lamps, each with a one-inch section of oxidizing UV-V. Two of the lamp’s oxidizing sections are covered with removable foil, allowing for increased oxidation if necessary.

Typical installations:

OPERATING THE EQUIPMENT

Each unit treats the air through recirculation in two ways:
1. The Germicidal UV-C lamp portion destroys airborne biological contaminants (viruses, mold,
bacteria.)
2. The Oxidizing UV-V lamp portion reduces airborne chemical contaminants and VOCs through
photo-oxidation.

PROCESS ON BIOLOGICAL AND CHEMICAL CONTAMINANTS

1-ACTIVATION PHASE:  H2O + O* –> OH* +OH*
Ultraviolet photon energy (170-220nm) is emitted from a high-intensity source to decompose (break down) oxygen molecules into activated monoatomic oxygen. The rate of production or effectiveness of this process depends on the wavelength and intensity of its source.

2-REACTION PHASE: OH*+P –> POH
The activated oxygen atoms (O*) are then mixed in the airstream; the process will react with any compound containing carbon-hydrogen or sulfur, reducing them by successive oxidation to odorless and harmless by-products. If airborne contaminants are outnumbered by the activated oxygen atoms, then there will be formation of residual ozone (O3) which will occur following the oxidation of normal oxygen molecules (02).

3- NEUTRALISATION PHASE: (also germicidal)  O3+UV(C) –> O2+O*: O+O –> O2

CHEMICAL DECOMPOSITION:
Ammonia NH3+OH* –> N2 + H2O

WHERE TO INSTALL

Many buildings and facilities can be equipped with either the stand-alone disinfection units or the in-duct unit, like kennels, pet boarding and animal shelters, laboratories, veterinarian centers, and zoos and pet stores.

Other articles that might interest you:

Coil Cleaning in Museums & Archives

Coil Cleaning in Museums and Archives

Air quality can severely impact and deteriorate irreplaceable paintings, documents, drawings, books and journals within a vault, storage area, library and exposition hall. Preserving these fine treasures from the ravages of mold, spores and bacteria are a priority for libraries, archives, museums and collectors. UV systems are designed to destroy airborne mold spores and their associated odors, as well as bacteria that can very well destroy treasures from the past.

Sanuvox UV IL-CoilClean systems are designed to destroy mold and other bio-contaminants on the evaporator coil, which results in spores as well as off-gassing being « blown-off » the evaporator coil and distributed through the facility.

Sanuvox in-duct UV BioWall systems effectively destroy thousands of airborne bio-contaminants, such as mold, bacteria, viruses, chemicals, VOCs and odors.

THE EQUIPMENT

The Sanuvox IL-Coil Clean system for HVAC coils utilizes a patented technology to focus the maximum UV energy on any surface. The patented anodized aluminum parabolic reflector serves two purposes:
1. Redirects the maximum amount of UV energy produced by the lamp onto the coil surface, requiring less or shorter lamps and fixtures.
2. Protects the UV lamp from fouling.

OPERATING THE EQUIPMENT

Prolonged exposure to UV radiation will keep the air conditioning coil clean and free of bio-contaminants, including viruses, fungi, bacteria and bio-film that may grow on the coil. Maintaining a coil free of microbial growth will maximize the efficiency of coil heat transfer and reduce the hours of operation of the compressors, resulting in lower energy costs.

UV-C GERMICIDAL PRINCIPLE

The UV-C wavelength is well documented for its germicidal properties. The effects of ultraviolet radiation on biological contaminants have also been included in the latest ASHRAE Handbooks. Generally, this relationship is similar to the absorption curve of nucleic acid (DNA) the basis of all living organisms. The germicidal destruction rate for any specified bio-contaminant can be greater than 99.9% as the maximum UV intensity produced by the UV lamp is directed onto the coil and each application is sized according to its requirements.

WHERE TO INSTALL

Many buildings and facilities can be installed with either the IL-CoilClean or the BioWall, like libraroes, museums, archives, record rooms, evidence rooms, private collections, or galleries.

Other articles that might interest you:

Sterilizing Air in Facilities

Sterilizing Air in Facilities

New buildings are built tighter to save energy, while older buildings are implementing new measures to reduce heating and cooling loss. Reduced fresh air also prevents dilution of contaminated air resulting in an increase of contaminants as they are now trapped inside and are continually recirculated throughout the space.

Indoor Air Quality (IAQ) applications in hospitals, schools, commercial buildings and offices vary. From Hospital Acquired Infection (HAls), sick building syndrome, absenteeism and work place productivity, Indoor Air Quality influences these facilities in many differents ways.

When the objective is to eliminate up to 99.9999% of airborne bio-contaminants, including viruses and bacteria that circulate through the ventilation system without increasing the pressure drop resulting from high efficiency filtration, Sanuvox offers the right solution with its high efficiency patented air purification system.

THE EQUIPMENT

The BioWall air purification unit is installed in the ventilation duct parallel to the airflow, allowing sufficient contact time that is required for airborne sterilization. The UV-C intensity of each lamp can be measured in “realtime” with an optional UV-C sensor, ensuring the required inactivation intensity will be delivered to the contaminant.

OPERATING THE EQUIPMENT

To create the sterilization chamber in the existing duct (up to 5 feet deep per unit), the walls are covered with an aluminum reflective material. The proprietary sterilization sizing calculations take into account: air velocity, dimensions of the duct, the UV lethal dose needed to sterilize the microorganism for the desired inactivation rate. The sizing calculations will determine the number and length of the BioWall unit(s) required. The optional UV-C sensor will guarantee that the UV-C emitted from the lamp will exceed the amount of UV-C that is required at all times.

UVC GERMICIDAL PRINCIPLE

The 254nm UV-C germicidal wavelength has been used for decades for sterilization and its effect on microorganisms is well documented. UV germicidal process inactivates microorganisms by damaging their DNA structure, making it incapable of reproducing. The germicidal efficiency can deliver virtually a 100% disinfection rate. The system can achieve exceptionally high disinfection rates as a result of the BioWall unit being mounted parallel to the airflow and the desired intensity is sized for each particular application.

WHERE TO INSTALL

Many buildings and facilities can be equipped with the BioWall unit, like hospitals, private clinics, veterinary clinics, as well as fertility centers. It can also be installed in schools, universities, offices towers and commercial buildings.

Other articles that might interest you: