Walls and Window Teatments

WALLS AND WINDOW TREATMENTS 3(1+2)

Lesson 10 : Wall Element – Ventilators

Purpose Of Ventilation

Maintaining human comfort and health are two key reasons for providing ventilation in buildings. To achieve these purposes, a ventilation system should be able to meet the following criteria:

1. provide sufficient supply of air/oxygen for the physiological needs of human beings and/or livestock;
2. provide sufficient supply of air/oxygen for industrial, agricultural and other processes (for example, provision of oxygen for burning and combustion processes);
3. remove the products of respiration and bodily odour (including those from smoking) of human and/or animal occupants;
4. remove contaminants or harmful chemicals generated by processes or from building materials;
5. remove heat generated by people, lighting and equipment inside the occupied space;
6. create some degree of air movement which is essential for feelings of freshness and comfort (usually a velocity of 0.1 to 0.3 m/s is required).