How to test the effect of the fresh air system and how to choose the fresh air system

The simplest, generally the toilet will be installed exhaust, first turn on the fresh air system, then you close the toilet door inside, put your hand on the crack of the door, it is obvious that you will feel the wind blowing in from the outside. The fresh air system we installed is particularly obvious in this regard, the toilet has no windows, but it must not be stuffy.

Now there are air quality sensing control systems and various air detectors, our company's air quality sensing system is mainly complete with ceiling-type fresh air system series products, air detector and wall-mounted (no pipe) fresh air purification all-in-one machine. It is recommended that when choosing a fresh air system, you should still have an understanding of the basic parameters of the product, including fresh air volume, purification rate, noise, etc.

The effect of indoor air purification, and the demand for fresh air is directly related to the area and number of people in the house, so the role of purchasing fresh air is to provide a large amount of fresh air for the indoor environment, so as to purify the air. The strength of the purification effect of the new fan mainly depends on two indicators: air volume and single purification efficiency.

Sufficient fresh air volume is the key to maintaining indoor air quality, and the national code specifically states that it is not less than 30 cubic meters of fresh air per person per hour. Fresh air volume and exhaust air volume are the key to maintaining the positive pressure requirements of the clean room, controlling the cleanliness of the room and ensuring that the entire environment is under control. The single-time purification efficiency of the fresh air fan determines the cleanliness of the fresh air entering the room (, which is the core indicator to maintain the controllable indoor air quality.

The relationship between fresh air volume and purification effect: When buying a fresh air ventilator, you need to calculate the fresh air volume required by the house according to the per capita fresh air volume demand and the number of air changes.

This is provided by the Guangzhou Research Institute of the Chinese Academy of Sciences, an authoritative institution for new fan testing.

The standard equipment of the German Bolong product is equipped with intelligent air monitoring components, real-time monitoring of indoor air quality levels, users can intuitively understand the current indoor air quality and specific data through the visual icon or APP on the device, and according to the color change to know the fresh air purification effect. In addition, our product "Air Wizard" air display instrument can display indoor carbon dioxide, temperature and humidity, TVOC and other index data in real time, and the air improvement effect is clear at a glance; And it can be infinitely connected with the fresh air system to realize the preferential allocation of fresh air volume to local key areas.

To test the effect of the fresh air system, it should be carried out in a professional testing institution, and the CMA and CNAS qualifications of the following fresh air system testing standards should be obtained: GB T 34012 air purification device for ventilation system, T CAQI 10 fresh air purifier, GB T 18801 air purifier, GB T 1236 industrial ventilator Performance test with standardized air duct, GB T 21087 air-air energy ** device, etc., can be tested by the Chinese Academy of Sciences at the Guangzhou Institute of Chemistry.

Fresh air system has entered more families, fresh air system is now the darling of many people, can improve indoor air, there are many brands of fresh air system, we must choose a more well-known brand when choosing, we can detect the effect of the fresh air system after installing the hail, what are the ways to detect the effect of the fresh air system? Next, I will introduce to you the method of detection.

Spot check the representative rooms responsible for the ventilation system to be tested (e.g., independent offices, meeting rooms, open spaces, etc. in public buildings; Living rooms, bedrooms, etc. in residential buildings), the number of sampling inspections should not be less than 30% of the total number of rooms, and should not be less than 3 rooms, and when the total number of rooms is less than 3, all should be tested. Interpretation: For example, we have 100 houses here, and the sampling test rooms are not less than 30 houses and less than three rooms, so the purification efficiency of the Zhisun Fan fresh air system should be tested in each room.

The number of testing points in each testing room should be determined according to its area, and the specific requirements are shown in the table. When there are two or more detection points in the room, diagonal, oblique, and plum blossom balanced distribution points should be used, and the average value of the detection results of each point should be taken as the detection value of the room. For example:

Your house is 80 square meters, you should find two locations to test (such as how much the purification efficiency is in the master bedroom, and what is the purification efficiency in the hall), and you can't just collect one point.

Each detection point was sampled and tested 3 times, each sampling was 1 min, and the average value of the 3 times was used as the concentration value of the point, and the sampling number should be increased to reduce the sampling error for the case of large deviation of the 3 sampling values (exceeding the range of 20% of the average value). Based on the average value, it is necessary to collect more than three times in the same place to prevent errors caused by parameters.

The on-site detection point of indoor pollutant concentration should be not less than the height from the ground to the inner wall. Detection points should be evenly spaced out and avoid ventilation ducts and vents.

The above is a detection method for the purification effect of the fresh air system, now we should also understand it, we need to detect a lot of aspects, you can have a good understanding of the above introduction, the effect of monitoring is qualified, then this fresh air system will bring greater improvement to our environment.

The tips for purchasing a fresh air system are: understanding the indoor air quality, understanding the type of fresh air system, understanding the filter of the fresh air system, understanding the noise of the fresh air system, and understanding the brand and after-sales service of the fresh air system.

1. Understand indoor air quality.

Before purchasing a fresh air system, you first need to understand the indoor air quality. Indoor air testing can be carried out by a professional testing agency, or it can be judged by your own senses. If there is odor, humidity, stuffiness and other conditions in the room, then the indoor air quality is not good, and a fresh air system needs to be installed to improve the spinal combustion.

2. Understand the types of fresh air systems.

Before choosing a fresh air system, you need to understand the type of fresh air system. At present, there are two main types of fresh air systems on the market: ** fresh air system and split fresh air system.

** type fresh air system is suitable for large residential or commercial places, while split type fresh air system is suitable for small houses or apartments. According to your actual situation, choose the appropriate type of fresh air system.

3. Understand the filter of the fresh air system.

Before purchasing a fresh air system, you need to understand the filter of the fresh air system. The filter of the fresh air system is the key to ensuring indoor air quality. At present, there are three main types of fresh air system filters on the market: ordinary filters, electrostatic filters and HEPA filters.

4. Understand the noise of the fresh air system.

Before purchasing a fresh air system, you need to understand the noise of the fresh air system. The noise of the fresh air system will affect people's quality of life, and if the noise is too loud, it will affect people's health. Therefore, when purchasing a fresh air system, you need to choose a fresh air system with less noise.

5. Understand the brand and after-sales service of the fresh air system.

Before purchasing a fresh air system, you need to understand the brand and after-sales service of the fresh air system. Choosing a well-known brand of fresh air system can ensure the quality and performance of the fresh air system; Choosing a fresh air system with perfect after-sales service can ensure the normal operation and maintenance of the fresh air system.

1. Check the air volume of the fresh air system.

The air volume of the fresh air system has a great impact on the replacement of fresh air, the air volume is large, the ventilation is fast, in order to circulate the indoor polluted air faster, so when choosing the fresh air system, according to the use area, choose the fresh air that is large enough and can meet the indoor air quality.

2. Identify the noise level of the fresh air system.

The main function of the fresh air system is to circulate the indoor air, the air volume of the fresh air system is related to the noise size, the larger the air volume, the greater the noise, so the user should find a balance between the air volume and noise when choosing, and explain your own needs and professional personnel, so as to ensure that there is a quiet indoor environment in the subsequent use process.

3. The filtration effect of the fresh air system is very important.

The filtration effect of the fresh air system is related to the ability of circulating air, and the filtration of fresh air is related to the filter, so the user should choose well when purchasing, the higher the filter level, the better the filtration capacity.

4. Maintenance cost of fresh air system.

The biggest cost of the fresh air system lies in the replacement of the filter, which will cause secondary pollution of the air if not replaced for a long time, because the category of the filter is different, so it is different. Users should listen to the advice of professionals when choosing.

An excellent fresh air fan should have three qualities: high purification efficiency, sufficient air volume, and low noise. But here's the hard part:

High purification efficiency requires high efficiency of the filter element, which means that the wind resistance is large; If you want to achieve sufficient air volume under high wind resistance, it will inevitably produce noise. In order to effectively balance these points, the team at Glasco optimized the wind turbine to introduce a twin-turbine fan that can produce more air with the same power and energy consumption, with high purification efficiency and energy saving. What's even more remarkable is that the fan can achieve low speed and thus lower noise with the same wind power.

At the same time, Glasco also uses high-quality meltblown cloth suitable for fresh fans as the filter through its own melt-blown cloth production line, and the purification level reaches the highest level of H13 and the resistance is 30% lower than that of ordinary ones under the same efficiency.