How to Test a Fresh Air System: A Comprehensive Guide Integrated with Hot Topics
As indoor air quality becomes a growing concern, fresh air systems have become a popular choice for homes and offices. But how to ensure that its performance is up to standard after installation? This article combines hot topics across the Internet in the past 10 days to provide you with a structured testing plan.
1. Key points for fresh air system testing
| test items | testing tools | Qualification standards |
|---|---|---|
| Air volume test | Anemometer/air volume hood | ≥90% of design value |
| PM2.5 filtration efficiency | Laser dust detector | ≥95% (high efficiency filter) |
| CO2 replacement rate | CO2 concentration detector | Dropped 50% in 1 hour |
| Noise test | decibel meter | ≤45dB (1 meter distance) |
2. Reference of recent hot topics (last 10 days)
| Hot keywords | focus of discussion | Related testing suggestions |
|---|---|---|
| spring allergies | Demand for pollen filtration surges | Focus on testing the filter level (H12 or above is recommended) |
| Energy consumption controversy | Heat exchange efficiency issues | Temperature difference test (the temperature difference between inlet and outlet air should be ≤3℃) |
| Intelligent control | APP linkage function | Automated response testing (such as automatic speed adjustment according to PM2.5) |
3. Step-by-step testing process
1.basic check: Confirm the tightness of the pipe and use a flashlight to check whether there is light leakage at the connection.
2.Air volume test: Place the anemometer in the center of the air outlet, record 3 readings and take the average. Calculation formula: Air volume (m³/h) = Wind speed (m/s) × Air outlet area (m²) × 3600.
3.Filter effect test: Light a cigarette to create a pollution source (confined space), and record the time it takes for the PM2.5 concentration to drop from 300 to 50.
4.Heat exchange test: During winter testing, use an infrared thermometer to detect the temperature difference between the inlet and outlet. Normally it should be more than 10°C higher than the outdoor temperature.
4. Solutions to common problems
| Problem phenomenon | Possible reasons | Solution |
|---|---|---|
| Insufficient air volume | Clogged filter/bent pipe | Replace the filter or adjust the pipeline direction |
| Odor reflux | Check valve failure | Check valve tightness |
| Condensation seepage | Damaged insulation | Repair pipe insulation |
5. Professional testing suggestions
It is recommended to conduct basic testing once a quarter and to be used by professionals every yearwind pressure gaugeandgas analyzerDo a thorough assessment. The latest industry data shows that regularly maintained system energy efficiency can be improved by more than 30%.
Through systematic testing, it can not only ensure that the fresh air system effectively improves indoor air quality, but also prolongs the service life of the equipment. Based on the recently hotly discussed topic of intelligent control, it is recommended that users pay attention to models with self-test functions to achieve more convenient daily monitoring.
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