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Why is it necessary to install ventilation equipment at home?
Release time:
2021-04-30
The purpose of indoor ventilation equipment is to deliver fresh outdoor air into the room. Previously, outdoor air was relatively clean, and it entered the room through window cracks or by frequently opening windows for ventilation. Now, outdoor air pollution is quite serious, and the windows of indoor rooms are basically closed. Thus, a new problem has arisen: the dust, smoke, and noise outside make opening windows for ventilation unrealistic, while the stuffiness and lack of oxygen when windows are closed affect healthy breathing. Indoor ventilation equipment is a solution to the above problems; it can deliver fresh air into the room, allowing the room to maintain effective ventilation even with the windows closed.
IndoorVentilation equipmentThe purpose is to deliver fresh outdoor air indoors. Previously, outdoor air was relatively clean, and it entered indoors through window cracks or by frequently opening windows for ventilation. Now, outdoor air pollution is quite serious, and the windows of indoor rooms are mostly closed. Thus, a new problem arises: the dust, smoke, and noise outside make opening windows for ventilation impractical, while the stuffiness and lack of oxygen when windows are closed affect healthy breathing. Indoor ventilation equipment is a solution to the above problems; it can deliver fresh air into the room, keeping the room effectively ventilated even with the windows closed.
Functions of ventilation equipment
IndoorVentilation equipmentThe main functions are four::Fresh air intake, air purification, heating, and outdoor noise isolation.
1. Delivering fresh air
There are two methods of air delivery::Natural ventilation(Without a fan)and mechanical ventilation(With a fan)。
Natural ventilation refers to the principle of delivering air into a room. The temperature and pressure indoors and outdoors are different. When there is negative pressure indoors, air naturally enters the room through the ventilation equipment without the need for a fan. This air exchange depends on weather conditions, the house's exhaust system, and the house's floor. Natural ventilation equipment cannot guarantee the air volume specified by the air quality standards. For example, when the indoor and outdoor air volume is consistent on the first floor, the air volume of the natural ventilation valve is close to0，and it has the advantages of being noiseless and energy-efficient.
Mechanical ventilation(Forced ventilation)refers to a fan forcibly delivering outdoor air indoors, independent of outdoor weather conditions, ensuring the air volume reaches the machine's technical parameters. The mechanical ventilation air volume can be controlled by changing gears; low gear has low noise, high gear has high noise, and power consumption depends on the machine's operating mode.
2. Air purification function
Not every ventilation device has air purification filtration, and the filtration levels of filters also vary, including primary-efficiency filters,HEPAfilters and activated carbon adsorption filters; various pollutants can be filtered through them.
3. Fresh air heating function
Ventilation equipmentWhether it has a heating function determines its scope of application. In cold winters, indoor ventilation equipment with a heating function can be used. Otherwise, machines without heating may freeze, or the fresh air delivered into the room may be cold air. There are two ways to heat indoor ventilation equipment::One is to heat the fresh air to a certain temperature using a heater, and the other is to keep the temperature of the indoor stale air constant, but this will consume some electricity. The former method is more energy-efficient, but heat recovery can heat the cold air to the desired temperature for users, but it does not necessarily need to be heated to a comfortable temperature.
Fourth, isolating outdoor noise
The allowable indoor noise range is below30dbat night, and below40dbduring the day; the noise generated by outdoor vehicles is between70-100dbIf the home is equipped with ventilation equipment, the windows can be closed to isolate outdoor noise. Of course, mechanical indoor ventilators with fans themselves have a certain noise level, but this noise is stable, unlike outdoor noise, which is always changing. Moreover, the noise of modern ventilation equipment can be controlled within a very low range. The noise of indoor ventilators is generally within30-40 dBwhich is significantly effective in isolating outdoor noise.
Key words:
Ventilation equipment
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