Clean technology in the air conditioning system application and maintenance of the paper
Abstract: Clean technology has been applied in many fields, such as in the electronic plant, food industry, health care, laboratories, and other cleanliness requirements of the more stringent environment has its figure. The article mainly discusses the application of clean technology in the air conditioning system, to ensure its good operation but also to strengthen the daily maintenance and management, hope that through the discussion of the article for the relevant staff to provide reference.
Keywords: clean technology; air conditioning system; construction
Currently, with the rapid development of science and technology in our country, but also to our country's medical care, scientific research, precision instruments, and laboratories and other professional fields put forward higher requirements. Clean air conditioning as a ventilation and air conditioning engineering construction of a more special type of construction, in these professional fields has been very widely used. Compared with ordinary air conditioning projects, clean air conditioning projects on air ducts, units and equipment for the degree of cleanliness and sealing are very high requirements. Therefore, it is necessary to ensure the construction quality of each link in the installation and construction process. The article is based on this background, the clean air conditioning installation project key construction technology and maintenance measures to discuss.
1 Clean Air Conditioning Installation Construction
1.1 Clean Air Conditioning Equipment and Material Selection
For clean air conditioning installation projects, the selection of equipment and related materials is a step, and a very important step. Selection of all equipment and materials must be to meet the relevant specifications and requirements. It is best to have the relevant factory certificates or quality-related identification certificate, if necessary, can be before the construction of equipment and materials for the quality of the second inspection. In the clean air conditioning, air duct is a very important equipment, in the selection of air duct, the surface must be corrosion-resistant, and do not rust, do not produce dust, do not accumulate dust. Its selection of materials can not choose the surface of hot rolled steel easily corroded, once the corrosion, the surface will become pitted, and rust is difficult to remove. According to engineering practice, high-quality galvanized steel is the best choice, the choice of galvanized steel, to ensure that the surface of the galvanized uniformity, there is no obvious oxidation layer, no pinholes, pitting, skinning, blistering and galvanized layer off the phenomenon.
1.2 The key installation process of the clean air conditioning installation project
Before carrying out the installation and construction of the clean air conditioning installation project, a specific installation schedule should be formulated, and the schedule plan should highlight the coordination with other professions, and the installation process should strictly comply with the plan. Overall, the construction process of clean air conditioning installation project is mainly as follows: clean up after the installation of health; first upper ceiling after the installation of the middle; first partition after the ceiling; first large equipment into the field after the partition closed; first purification installation after the process of installation; inside the decoration of the first after the next, the first inside after the outside; after the completion of the clean room ground treatment; first adjustments to the test. The following author combined with work experience, examples of some important parts of the installation of key points:
1.2.1 air duct installation points. In the process of air duct installation, there are many different construction methods and measures from the ordinary air duct system. Specifically, before the construction of the air duct, it is necessary to first place the line according to the intention of the design drawings and make most of the support and suspension holes. Before the air duct installers are in place, their corresponding repair and expansion objectives should also be completed in advance; after that, different processing measures are adopted in combination with the different air duct connection methods used, which can be carried out with reference to the Technical Regulations for Ventilation Ducts. Before installing the duct, we should adopt relevant measures to ensure the cleanliness of the duct, for the construction process of garbage or pollution sources should be removed in a timely manner.
1.2.2 Air conditioning unit, fan points. Similar to the installation of air ducts, air conditioning units and fans before the installation, but also to take internal cleaning and wiping measures, dust, debris and other sources of pollution to remove. After installation, run for 12 hours before the installation of the medium efficiency filter. When the air conditioning unit installation is completed, you can take the air leakage detection work, if found leakage points, to use sealant to seal the processing.
1.2.3 High efficiency filter points. Before the installation of high-efficiency filters, the clean room must be fully cleaned, and after many times blowing dust, it is necessary to enter the system test before installation, pay attention to the high-efficiency filters when unpacking, take care of the filter paper to protect the installation, and if the FFU is used, pay attention to the installation of the fan and the filter at the same time, to avoid damage to the filter paper.
1.3 Clean air conditioning orderly trial and debugging
After the installation of clean air conditioning, orderly trial and debugging is also very important. After the installation of clean air conditioning is completed, on the one hand, do a good job of cleaning the air conditioning room, filtration system, on the other hand, the clean air conditioning system of electrical, power supply, automation, after a full inspection, then start the clean air conditioning test run. Before the test drive, you can make a thorough test drive plan, arrange special test drive personnel in a unified organization to ensure that the system can be stabilized through the indicators of the test. For the debugging of clean air conditioning, you can focus on the system's air volume and differential pressure to do key debugging. For example, for the site air volume. Debugging can use the flow rate distribution method. From the system's most unfavorable loop on the end of the high-efficiency air supply outlet air volume adjustment. Adjustment should be noted that if the same pipe on the high-efficiency air supply outlet air volume as a whole are on the large side, should be given priority to reduce the branch pipe valves, so that you can avoid adjusting the end of the high-efficiency air supply outlet valves may produce a large whistling sound.
2 clean air conditioning system operation and maintenance
The air filter as the basic unit of air purification, the filter is the core of the clean project, in order to ensure the normal operation of the air conditioning system, the need for a reasonable selection of filters, the quality of filters is related to the service life of the filters, the filter through the routine maintenance of the filters can also be Extend the service life of the filtration system, if you do not update the filter in time, it will lead to increased wind resistance of the filter, affecting the normal operation of the equipment.
Here we have to talk about the basic principle of air purification, which is mainly through multi-stage filtration of air, in the new air unit set up in the intermediate filter, and then through the sub-high efficiency filters sent to the static pressure box, high-efficiency filters are the last barrier to purify the air to ensure that the air is well processed, the air filters in clean air conditioning system after a period of time, to be regularly tested on the system air supply volume. After a period of time, the air filter in the clean air conditioning system should be regularly tested on the system's air supply, and its dust capacity and air resistance will reach its maximum allowable value, and it is necessary to replace the filter in the clean air conditioning system. Usually, the medium-efficiency filter is replaced quarterly, the sub-high-efficiency filter is replaced half-yearly, and the high-efficiency filter is replaced once a year. If not replaced in a timely manner, will lead to clean air conditioning system to reduce the amount of air supply, can not be normal operation.
Clean air conditioning system in the operation process, the relevant enterprises should record the operating time of the system, timely replacement of relevant components, otherwise it will cause system failure, such as a mushroom enterprise in Guangdong, because not strictly according to the provisions of the time for the replacement of filters, resulting in the inoculation of the success rate greatly reduced, and ultimately only in the inoculation of the room at the same time to take the ozone The only way is to use ozone sterilization in the inoculation room at the same time.
In addition, the use of filters for clean air conditioning systems, but also need to pay attention to the following aspects: (1) after opening the air filter equipment after the primary, secondary, high efficiency filtration self-purification for half an hour, in which case the cleanliness of the air in order to reach the 100 level; (2) there are branches of the air ducts, the total air inlet by the primary and secondary filtration to the various branches of the air ducts should be high efficiency filtration to reach the 100 level; (3) the total air inlet by the primary and secondary filtration to the branch air ducts should then be filtered. Filtered to reach 100; (3) because the air conditioner in the work of 1/3 of the air is from the outdoors, so the warm or cold air into the room should need to go through the purification and filtration; (4) the floor should be returned to the air ducts.
Based on the above, the following points should be done: first, the establishment of air conditioning system detailed operation and maintenance procedures, and strict implementation; second, combined with the actual operating conditions, the provisions of the time to do a variety of maintenance work, the responsibility of the person and the corresponding records to ensure that it can be operated; and finally, the establishment of awards and penalties system to improve the level of the system operation, reduce operating costs, and improve the reliability of the system to reward the personnel. Finally, the establishment of a reward and punishment system to improve system operation, reduce operating costs, improve the reliability of the system to reward the personnel, and not strictly implement the procedures, can not carry out timely maintenance of the personnel to carry out the appropriate penalties, so as to improve the staff's sense of responsibility and enthusiasm for work.
3 Conclusion
In summary, the clean air conditioning project and ordinary air conditioning system compared to the cleanliness and sealing has a more stringent requirements, and the details of the construction process is more cumbersome, so in addition to mastering the key processes in the installation process of clean air conditioning project construction, but also to the details of the installation of strict management, improve the installation of personnel, the installation of the installation of the details, and to ensure that the installation of the clean air conditioning project, the installation of a clean air conditioning project. Strict management, improve the clean consciousness of the installers, thus further improving the construction quality of the entire clean air conditioning installation project.
References
[1] Chen Shaojun. Research on maintenance and energy saving measures of clean air conditioning system [J]. Urban Architecture, 2015(06): 339.
[2] Qin Yufeng. Purification air conditioning system and energy saving measures [J]. Theoretical Research on Urban Construction, 2015, 05 (12): 34-35.
;