Ozone Generator Central [**]ir Conditioning Purification System

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Ozone generator central air-conditioning purification system disinfection and sterilization scheme for clean area

In the food workshop, the area of the clean area is relatively large, and most of them have a central air-conditioning purification system to complete the purification and disinfection of each clean area. The method is to pass ozone through the air duct of the air conditioning purification system, and the ozone is sent to each clean area along with the air flow in the air duct, and the clean area is disinfected and sterilized. The remaining ozone is sucked into the return air outlet and taken away by the central air conditioner.



Ozone-generator-1





Ozone Generator Central [**]ir Conditioning Purification System Three Disinfection Methods

1. Built-in pipeline ozone generator

For built-in ozone generators, the ozone generating unit is generally placed inside the air duct of the air conditioning purification system, and the control unit is placed outside the air duct where it is convenient for manual operation. Its advantage is that it is easy to operate, no matter after installation, no need to connect external air supply pipeline. But the disadvantage is that the ozone generating unit cannot be observed at any time, the working condition is not clear, and it is not easy to repair and maintain.



Ozone-generator-3





2. External fixed ozone generator

The external ozone generator is placed outside the air duct of the air conditioning purification system, and the ozonated gas is sent into the air duct of the air conditioning purification system through the air supply pipe, and then sent to each clean area by the air flow in the air duct. The working status is clear at a glance, and it is easy to repair and maintain. The disadvantage is that the installation requires an external air supply pipeline, and the cost of the machine is slightly higher. Both built-in and external methods have the same disinfection effect. [**]ccording to the requirements of the disinfection technical specification of the Ministry of Health, the ozone concentration for air disinfection is 5ppm, but in fact, the disinfection of the clean area is not only the disinfection of the air, but also the disinfection of the surface of the object, so the dosage in the design The concentration should generally be above 10pp. Turn on the machine for 1-2 hours before going to work every day, and turn it on for 1 hour after get off work, which can ensure that the planktonic and sedimentary bacteria in the clean area within a day meet the requirements of GMP.



Ozone-Generator-Central-[**]ir-Conditioning-Purification-System





3. External mobile ozone generator

The mobile ozone generator can be connected to the air duct of the central air-conditioning purification system through the air supply pipe, and the air flow through the air duct is sent to each clean area for disinfection and sterilization of the clean area, and it can also be used for other cleaning products that need to be sterilized separately. The space is disinfected and sterilized. The method is to directly move the mobile ozone generator into the clean area, set the disinfection time according to actual needs, and automatically shut down after disinfection, which is very convenient to use.





Concentration standard for application of ozone in central air-conditioning systems in the pharmaceutical industry

The inactivation concentration of ozone to microorganisms in the air and the inactivation concentration of microorganisms deposited on the surface of objects, according to the regulations in paragraph 8.2 of the ozone application chapter of the "Disinfection Technical Specifications" promulgated by the Ministry of Health in December 1991 "to The closed air is treated with ozone at a concentration of 5-10mg/m3 (equivalent to 2.5-5ppm) for 30 minutes; 20-30mg/m3 (equivalent to 10-15ppm) is required for the sedimentation colonies on the surface of objects." The purpose of applying ozone in the pharmaceutical industry is to replace ultraviolet rays and chemical fumigation, and to sterilize the air in the entire clean area and the settled colonies on the surface of mechanical equipment and media materials. The required ozone concentration is 10~15ppm, which is equivalent to 20~30mg of ozone per cubic air.





Calculation Method of Ozone [**]pplication [**]mount in [**]ir Conditioning System

Suppose: V1 is the space volume of the clean area, V2 is the space volume of the HV[**]C system, and V3 is the loss of ozone caused by the fresh air supplemented by maintaining the positive pressure in the clean area;

Then the total volume (V) of the sterilization space is calculated as: V=V1+V2+V3

Determination of V3: [**]ccording to practice, a more reliable empirical formula is summed up: V3≈the total circulating air volume of the HV[**]C system m3/h*25% (regular fresh air replacement rate)×10-20% (maintaining the positive pressure supplement in the clean area Fresh air volume) × 39% (the estimated value of the half-life of ozone when ozone is applied), that is, V3 = total circulating air volume of the HV[**]C system × 1-2%.





Selection of ozone generator:



First, according to the efficiency of ozone sterilization, that is, refer to the standard of "Disinfection Technical Specifications" to determine the concentration of ozone sterilization (C): for planktonic bacteria in the air, the concentration of ozone sterilization is 2-4ppm; for objects The concentration of settled colonies on the surface is 10-15ppm (refer to the "Disinfection Technical Specifications" for the concentration of ozone sterilization). The natural half-life (S) of ozone is about 23 minutes in the reference state, and the decay rate in one hour is 61%. Design: [**]fter applying ozone to sterilize for 60 minutes to reach the required concentration, keep it for a period of time (1 to 1.5 hours), and you can get the effect of completely killing the settled bacteria on the surface of mechanical equipment and buildings, and achieve the effect of chemical fumigation and disinfection.

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Ozone generator central air-conditioning purification system disinfection and sterilization scheme for clean area
In the food workshop, the area of the clean area is relatively large, and most of them have a central air-conditioning purification system to complete the purification and disinfection of each clean area. The method is to pass ozone through the air duct of the air conditioning purification system, and the ozone is sent to each clean area along with the air flow in the air duct, and the clean area is disinfected and sterilized. The remaining ozone is sucked into the return air outlet and taken away by the central air conditioner.

Ozone-generator-1


Ozone Generator Central [**]ir Conditioning Purification System Three Disinfection Methods
1. Built-in pipeline ozone generator
For built-in ozone generators, the ozone generating unit is generally placed inside the air duct of the air conditioning purification system, and the control unit is placed outside the air duct where it is convenient for manual operation. Its advantage is that it is easy to operate, no matter after installation, no need to connect external air supply pipeline. But the disadvantage is that the ozone generating unit cannot be observed at any time, the working condition is not clear, and it is not easy to repair and maintain.

Ozone-generator-3


2. External fixed ozone generator
The external ozone generator is placed outside the air duct of the air conditioning purification system, and the ozonated gas is sent into the air duct of the air conditioning purification system through the air supply pipe, and then sent to each clean area by the air flow in the air duct. The working status is clear at a glance, and it is easy to repair and maintain. The disadvantage is that the installation requires an external air supply pipeline, and the cost of the machine is slightly higher. Both built-in and external methods have the same disinfection effect. [**]ccording to the requirements of the disinfection technical specification of the Ministry of Health, the ozone concentration for air disinfection is 5ppm, but in fact, the disinfection of the clean area is not only the disinfection of the air, but also the disinfection of the surface of the object, so the dosage in the design The concentration should generally be above 10pp. Turn on the machine for 1-2 hours before going to work every day, and turn it on for 1 hour after get off work, which can ensure that the planktonic and sedimentary bacteria in the clean area within a day meet the requirements of GMP.

Ozone-Generator-Central-[**]ir-Conditioning-Purification-System


3. External mobile ozone generator
The mobile ozone generator can be connected to the air duct of the central air-conditioning purification system through the air supply pipe, and the air flow through the air duct is sent to each clean area for disinfection and sterilization of the clean area, and it can also be used for other cleaning products that need to be sterilized separately. The space is disinfected and sterilized. The method is to directly move the mobile ozone generator into the clean area, set the disinfection time according to actual needs, and automatically shut down after disinfection, which is very convenient to use.

Concentration standard for application of ozone in central air-conditioning systems in the pharmaceutical industry
The inactivation concentration of ozone to microorganisms in the air and the inactivation concentration of microorganisms deposited on the surface of objects, according to the regulations in paragraph 8.2 of the ozone application chapter of the "Disinfection Technical Specifications" promulgated by the Ministry of Health in December 1991 "to The closed air is treated with ozone at a concentration of 5-10mg/m3 (equivalent to 2.5-5ppm) for 30 minutes; 20-30mg/m3 (equivalent to 10-15ppm) is required for the sedimentation colonies on the surface of objects." The purpose of applying ozone in the pharmaceutical industry is to replace ultraviolet rays and chemical fumigation, and to sterilize the air in the entire clean area and the settled colonies on the surface of mechanical equipment and media materials. The required ozone concentration is 10~15ppm, which is equivalent to 20~30mg of ozone per cubic air.

Calculation Method of Ozone [**]pplication [**]mount in [**]ir Conditioning System
Suppose: V1 is the space volume of the clean area, V2 is the space volume of the HV[**]C system, and V3 is the loss of ozone caused by the fresh air supplemented by maintaining the positive pressure in the clean area;
Then the total volume (V) of the sterilization space is calculated as: V=V1+V2+V3
Determination of V3: [**]ccording to practice, a more reliable empirical formula is summed up: V3≈the total circulating air volume of the HV[**]C system m3/h*25% (regular fresh air replacement rate)×10-20% (maintaining the positive pressure supplement in the clean area Fresh air volume) × 39% (the estimated value of the half-life of ozone when ozone is applied), that is, V3 = total circulating air volume of the HV[**]C system × 1-2%.


Selection of ozone generator:

First, according to the efficiency of ozone sterilization, that is, refer to the standard of "Disinfection Technical Specifications" to determine the concentration of ozone sterilization (C): for planktonic bacteria in the air, the concentration of ozone sterilization is 2-4ppm; for objects The concentration of settled colonies on the surface is 10-15ppm (refer to the "Disinfection Technical Specifications" for the concentration of ozone sterilization). The natural half-life (S) of ozone is about 23 minutes in the reference state, and the decay rate in one hour is 61%. Design: [**]fter applying ozone to sterilize for 60 minutes to reach the required concentration, keep it for a period of time (1 to 1.5 hours), and you can get the effect of completely killing the settled bacteria on the surface of mechanical equipment and buildings, and achieve the effect of chemical fumigation and disinfection.

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