INDUSTRIAL OZONE GENERATOR
There are many differences in ozone generators, some variables will be relevant to your ozone application. It is not possible to cover every possible ozone application, therefore we will discuss the various differences and variables in ozone generators that should be considered and the general applications ozone is used in.
INDUSTRIAL OZONE GENERATOR
The ozone output value is shown in a mass over time value that indicates mass of ozone produced in a given period of time. This is the most widely used method to compare ozone generators and may be the most important for your application.
In a water treatment application, ozone concentration is very important as it will affect the solubility of ozone into water. In applications where high dissolved ozone are required ozone concentration is the most important variable as this will dictate that maximum dissolved ozone level in water.
When using oxygen for ozone production ozone concentration is very important as an ozone generator that produces ozone at a lower ozone concentration will require more oxygen to produce the same g/hr ozone output. This may increase capital costs for oxygen generating equipment, and increase long-term operational costs due to higher energy demand.
Converting oxygen to ozone requires an energy transfer. This energy transfer will produce heat as a by-product. This heat must be removed from the ozone generator either with fans for air-cooling, water for water cooling, or both. Most small ozone generators are air-cooled, most large ozone generators are water-cooled.
Air-cooled ozone generators will typically run warmer than water-cooled ozone generators and produce ozone less efficiently. Therefore, lower ozone concentrations are typical, along with higher feed-gas flows required.
Water-cooled ozone generators require cooling water passing near high voltages used for ozone production. This can be a safety hazard in some locations, most notably dirty environments where air quality is poor and dirt may build up on the ozone generator components.
Most every industrial ozone generator uses corona discharge to produce ozone. Ozone can be produced at up to 20% by weight with no limit to ozone production. Ozone is produced from oxygen or dry-air, if air is used it must be dry duet to by-product creation in the ozone generation process.
Ozone is produced electrolytically directly within water, this eliminates the need for gas to liquid contacting equipment used for UV or Corona Discharge ozone generators. Water must be very clean for electrolytic ozone production due to contamination and break-down of the anode and cathode used for this method.
When ozone is produced via corona discharge the corona cell must use an anode, cathode and dielectric barrier material. There is a wide variety of materials in use today, each with distinct advantages and disadvantages.
Ozone generator design will affect the corona cell operating pressure. Ozone generators may be designed to operate under vacuum or pressure, or both. The vacuum or pressure available will affect the suitability of the ozone generator for specific applications, or alter your system configurations.
A higher priced ozone generator that is more efficient at producing ozone and requires less feed-gas may reduce the cost of an oxygen concentrator other equipment. Spending more for the ozone generator may lower the capital cost and/or operating cost of the system long-term.
There are extremely low-priced, imported ozone generators on the market. These should be used with caution but may be useful when long-term reliability is not important, such as short-term pilot tests or lab testing.
Ozone generator quality ranges dramatically. Extremely low priced, low quality imported ozone generators are on the low end, while specialty ozone generators manufactured for specific high-end applications are available. The quality and reliability may range dramatically. A few points to consider are listed below.
Many low cost imported ozone generators have poor reliability, but more importantly, replacement parts are commonly not available, or not worth installing. Consider these to be disposable machines. Certainly, disposable equipment has a place in any industry, and even in the ozone industry, there is a reasonable place for this equipment when used with the proper expectations.
Ozone generators manufactured in North America actually use many common components. While there are a variety of manufacturers, many of the components used are similar This is an advantage for long-term availability of replacement parts.
Choosing the right ozone generator for your application should be done considering all the potential variables and metrics relevant to your application. Ozone is simple to produce, applying ozone properly to your application is not as simple.
Some devices that are advertised as air purifiers purposely emit large amounts of ozone, the main component of smog. CARB recommends that ozone generators not be used, except for approved industrial purposes where harmful exposure to ozone is prevented. Not only are ozone generators ineffective at cleaning indoor air, but inhaling ozone poses serious health risks for humans and animals. This fact sheet discusses these health risks and provides effective, alternative solutions to address indoor air quality problems.
Air cleaners that utilize ionizers and electrostatic precipitators are other types of devices that emit ozone, but do so as a by-product of their design and function. These devices are designed to electrically charge particles in the air and cause them to attach to surfaces in the room, such as walls or floors. Ozone is released through the charging process, although these devices typically emit much less ozone than ozone generators.
Ozone generators can produce indoor ozone levels several times higher than the State's outdoor 1-hr and 8-hr health standards of 90 parts per billion (ppb) and 70 ppb respectively. Many commercial ozone generators emit more than 5,000 mg of ozone per hour of operation, which could result in unhealthy levels of ozone in indoor air.
People who buy ozone generators may not be aware that ozone can harm the cells in the lungs and respiratory airways. Exposure to ozone irritates and inflames the lining of the respiratory system. This causes symptoms including coughing, chest tightness, shortness of breath, and impaired breathing. Ozone can worsen asthma symptoms, and may contribute to the development of asthma. Elevated exposures to ozone can cause permanent lung damage, and repeated exposure can even increase the risk of dying among persons already in poor health. Persons especially vulnerable to health problems from breathing ozone include children and those who already suffer from asthma or other respiratory diseases, including the elderly. There are many experimental studies on animals, including dogs, cats, hamsters and guinea pigs, that show respiratory effects from exposure to ozone. Birds are especially sensitive to the effects of air pollutants, including ozone.
The unfortunate answer is that misleading advertising by manufacturers is very effective, and no government agency has the authority to fully regulate these devices. Thus, CARB is actively working to educate professionals and the public about the dangers of using ozone generators.
CARB strongly advises against the use of ozone generators in spaces occupied by people or animals. Other governmental agencies agree with this advice. CARB provides a list of potentially hazardous ozone generators sold as "air purifiers", which is periodically updated. If an ozone generator is not on this list, it does not mean that it is safe for use.
In 2007, CARB adopted a regulation to limit ozone emissions from indoor air cleaning devices. Over 300 manufacturers have submitted test results and obtained CARB certification of their air cleaning devices as required under our regulation. Certification is based on a device's low (usually near-zero) ozone emissions and electrical safety. The following information provides the list of CARB certified air cleaning devices and additional information on how to choose a safe and effective air cleaner.
The Model S-200G ozone generator uses a water-cooled Corona Discharge (CD) tube to generate ozone from a variety of pressurized sources such as compressed air, bottled oxygen or an oxygen generator. The result is high ozone concentration yields at low energy demand.
Switches and LED status indicator lights are provided for the ozone generator and the air compressor. The concentration of ozone discharged is controllable from 0 to 100% by a dial potentiometer to vary the current to the CD tube, as displayed on a 300-800mA amp meter. Should the unit stop making ozone for any reason, a fault warning light is displayed. The unit is protected electrically by an externally-accessible fuse.
All Crystal Quest Ozone generators are equipped with an easy-to-use timer to guarantee safe use. The timer is a simple method to control the level of ozone produced into the air to properly disinfect.
When preparing to disinfect, set the timer for the desired dosing. This will allow the Crystal Quest Ozone generator to be operated automatically when the space is unoccupied. Once the timer has ended, the system will shut down, the ozone will dissipate, and the area will be safe for re-entry into a clean environment.
Milligrams Per Hour (mg/h): This output is a low concentration for residential disinfection, small vehicles, and other small areas. Do not purchase a mid-dose or high-dose system for a small space. Crystal Quest Ozone Generators are manufactured with various outputs. It is essential for safe use to understand the difference between the output doses. Ozone generators are used to produce ozone for cleaning air or removing smoke odors in unoccupied rooms.
Grams Per Hour (g/h): This output is a high concentration and should only be used for large vehicles such as public city buses, subway, and trains, and large commercial and industrial dwellings and residential homes that exceed 8,000 sq. ft 041b061a72