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Anonymous users2024-01-23Fresh air is needed at all times, as long as there are people in the room.
All rooms have doors and windows, and the gaps between the doors and windows can be supplemented with fresh air.
You want to ask if you need a centralized fresh air host, right?
If you have good ventilation conditions in your home and the surrounding environment is better, it is okay to use doors and windows for ventilation, and you can also install a centralized fresh air host if the economic conditions permit, but you should pay attention to the configuration of air volume to meet the needs of use. Many people are greedy for cheap to buy the fresh air volume is insufficient, but it is not as good as opening doors and windows to ventilate the human body.
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Anonymous users2024-01-22This is definitely needed, and the indoor oxygen content needs to be increased and the concentration of harmful gases diluted, so it is necessary to install a fresh air system. If there are many people or smoking places, the number of air changes should be increased. This is the only way to ensure clean air.
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Anonymous users2024-01-21As long as it is indoors, there is a need to increase the oxygen content of the air and dilute the concentration of harmful gases, so as long as it is indoors, a fresh air system can be installed.
It's just that the number of ventilation of fresh air will vary according to the function of the room, such as the public place you mentioned, the general design of the ventilation frequency is about 2 times per hour.
If there are many people or smoking places, the number of air changes should be increased. However, the number of air changes in the home is generally designed to be about 1 time per hour.
Enterprises should strictly implement the safety management system, strengthen the investment in relevant safety facilities, and implement the "three irons and one device" (anti-theft iron windows, iron anti-theft doors, iron safes, and alarms) in key parts of the enterprise's financial room. If you don't install the theft incident, the leader will be fined!
No, it is illegal to alter without permission.
Residential interior decoration and decoration management measures 39th without the approval of the competent administrative departments of urban planning, in the residential interior decoration activities to erect buildings, structures, or unauthorized changes to the façade of the residence, on the non-load-bearing exterior wall doors, windows, by the competent administrative departments of urban planning in accordance with the provisions of the urban planning law and relevant laws and regulations. >>>More
Of course, this is needed, otherwise the room will be very stuffy.
It's because all your doors and windows are closed, and the moment you close the door, there is a flow of air, and the sound of air vibrating the ceiling, you can try to open a window, and then close the door, and it should not sound.
In the winter, turn it on, and when it comes to the summer, turn it off, and he's a heater, because in the winter, the ambient temperature is lower than the temperature outside the refrigerator, so the thermostat inside won't start, so this thing is needed.