indoor air quality and energy-optimized ventilation.

1.
Introduction to the Constitution of the World Health Organization (WHO, 1948)
Define health as \"a complete physical, mental, and social state --
It\'s not just no disease or weakness \".
Modern people spend 90% of their time indoors every day. Good indoor air quality is a human right.
According to the experience of sick building syndrome, outdoor air intake is considered a very important technical solution, and indoor air quality is an important criterion for evaluating the environment.
Energy conservation is another important project to consider.
The main purpose of most ventilation systems is to provide a healthy and comfortable indoor climate for the occupants of the building.
One of the main criticisms of air conditioning space is indoor air quality.
Subjective reactions include insufficient freshness, dry and poor temperature control.
Objective measurements showed that the temperature exceeded the normal suggestion, high pollutant content and low relative humidity.
The following parameters have an important impact on ventilation rate (
Volume of external air that actually introduces space)
: Damage to air quality caused by occupants, discharge of materials in the room, smoking and other activities, external air quality, heat load (Popa, 2003). 2.
If the artificial environment in the air
The air conditioning system is installed in a room, it will automatically become a manual environment and should be properly controlled for all environmental elements:
The ventilation efficiency takes into account the air supply mixing in the occupied space.
It describes a part of the fresh air delivered to the space reaching the occupied area.
The proportion of fresh air delivered to the space occupied area depends on the room air distribution, which is determined by the location of the air transport and the geometry of the space (ASHRAE, 1989).
Ideally, 100% of fresh air should be delivered to the breathing area, but usually there is not enough air
The circuit between the power supply and the extraction point.
Ventilation efficiency is a term used to quantify the effectiveness of ventilation and is a measure of the capacity of the ventilation system to discharge pollutants generated within the space.
For specific contaminants, it is the ratio of its concentration at the extract point to the average concentration level of contaminants throughout the occupied area.
Ventilation efficiency (E): E = [C. sub. e]/[C. sub. l](1)Where [C. sub. l]--
Concentration of pollutants in one location; [C. sub. e]--
The concentration of contaminants in the exhaust gas if a significant level of contaminants in the air is supplied, this should be subtracted from the internal concentration level (Ott, 2007. ). b.
The dose of a person exposed to indoor air pollutants is expressed by equation D = q [integral]C(t)dt (2)Where D--the dose, q--
Respiratory rate C (t)--
Concentration of pollutants, t--
If instantaneous mixing is assumed, the concentration in the room can be expressed as follows: C = Co M/Q (3)Where [C. sub. o]--
Outdoor concentration M--
Pollutant production rate Q--
From the equation (3)
It is derived that the indoor concentration is higher than the outdoor air concentration because [DELTA]C = C -C --
Movement of air (
From supply to export)is optimized (
Ventilation effect)
Or if the air is discharged nearby-
Smoking is prohibited.
If it is not possible, the design flow of external air must be based on the estimated number of cigarettes per hour (50-130 [m. sup. 3]per cigarette); --
The air volume per person is relatively large (
Time delay of dynamic response of air pollution load in hybrid system); --
Tobacco smoke pollution in small spaces (up to 100 m3)
Just use the air purifier. In air-
Only when the heat load makes the required supply air volume greater than the external air volume determined by the sanitary requirements, the additional air should be supplied in the form of recycled air.
Recycled Air should only be used if there is little or no pollution during the work process, unless the recycled air is properly filtered to make it the same quality as the external air. 5.
Conclusion according to WHO\'s definition of health, the goal of environmental control is people\'s health.
A necessary activity for professionals is to develop standards to ensure that indoor air quality is improved and there is hope of prevention.
All requirements must be feasible in practice.
Outdoor air intake is a basic measure to cover unknown pollutants. The energy-
Optimized ventilation must be adapted to the influencing variables from the internal and overall system. 6.
Confirm that the considerations presented in this paper are part of the national research funding for large-scale environmental studies within the framework of IGLOB42117 PN-II 2008. 7.
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Acceptable ventilation of indoor air quality1948).