In the previous article we discussed how the decision the fundamental problem effects on of the application (commercial) side of the same problem. In this paper, we will continue to consider the relationship between fundamental and applied parts of the task of ensuring indoor air quality.
The basis for the standards and requirements for ventilation systems (CEN, 1998; ASHRAE, 2004) is a method, building on the response of the human senses to the air of varying quality (sensory response). P. Ole Fanger notes that the common statement tells that the sensor measurements are preferable to chemical measurements. In practice, this "philosophy" of standards defines the low quality of the air that displeased more people than expected, which is documented in many studies in the real conditions, in buildings built under these standards all around the world.
Thus, in the standards and requirements for ventilation systems physiology of human is replaced by his feelings, a scientific approach to solving the problem of indoor air quality – by a solution of the subject objective.