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What are the considerations for installing fresh air systems in schools?

2020-12-31 04:10:16
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Colleges and universities are different from general public buildings. Because the classrooms of colleges and universities are densely populated and stay for a long time, and the goal of service projects is also young children or young children, for the fresh air system of colleges and universities, it is no longer a simple room ventilation machine and equipment, and the air index, ventilation and ventilation must be fully considered Physical comfort and its possible adverse effects on the operation of fresh air system in Colleges and universities.

1、 Three levels of air pollution in classrooms

1. Just like closing the windows and doors in the room, it will continue to come in from the gap, haze weather and air pollution

2. Many pencil scraps, desks and chairs and teaching materials also contain indoor formaldehyde, stupidity and other harmful substances with different components

3. Students constantly exhale carbon dioxide. The closed teacher is always getting more and more stuffy. It is very easy to feel dizzy and sleepy, which endangers the teaching level. In addition, the smell of sweat and food accumulate in the room.

2、 The wind is heavy and quiet

Large exhaust air volume means large noise, which will do harm to all normal classroom teaching. The noise is caused by two sources, one is the shell noise, the other is the air duct noise, in which the centrifugal fan plays a leading role. The centrifugal fan with good performance can not only greatly reduce the shell noise, but also make the fresh air smoother.

3、 Environmental protection and energy saving of fresh air system

The fresh air system of colleges and universities can not be served by general ventilation and cooling equipment. This is because the relative density of students is high and the resistance of human body is poor. Once there is heavy environmental pollution, only by ensuring sufficient gas cleanliness level and comfort, can we build a healthy and comfortable teaching environment for the flowers of the motherland.

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