English 
فارسی 
Since environments such as hospitals and health centers deal with a variety of microorganisms, and while dealing with this issue, the hygiene of each room and floor must be maintained, in the air conditioning system of this type of buildings more serious goals and More specialized is sought. Including:
- The need to restrict the movement of air inside and between different sections, so that there is no reciprocal movement between these sections and the air of each space remains for the same space.
- Requires careful filtration to reduce contamination in the form of odors, airborne hazardous microorganisms, radioactive materials and chemicals.
- Need to control humidity and temperature.
- Need special ventilation design to minimize disease transmission to both patients and staff.
Types of hospital ventilation systems
There are generally three types of ventilation for hospitals and health centers, including natural ventilation, mechanical ventilation (including air conditioning) and combined ventilation. Air conditioning systems used for such buildings usually include:
Fan coil system with central or local air distribution
Which are often placed under the window so that fresh air can be used outside. But one of the disadvantages of fan coils is that in this air conditioning system, relative control of relative humidity is not possible. Therefore, this system – in its central type – is more suitable for administrative and non-medical departments of hospitals and health centers.
Multi-zone air conditioning system
In order to control temperature and humidity per area. The regional air conditioning system is the case that is suitable for hospitals with different wards and rooms and is considered the best.
Hospital coolers
Air conditioners are used when there is a need for quick drying or when there is no air conditioning in the building.
Safety hood
They are suitable for local ventilation and are especially used for laboratories of sanitary buildings. Biological safety hoods in different classes and laminar hoods (for cell culture) will also be in the same category.
boiler
Or boiler, which heats the fluid used in air conditioning systems and brings it to boiling point.
Positive air pressure device
Which can quickly provide fresh air and acts like an oxygen generator. Sometimes, this air conditioning system is also called building ventilation system.
Exhaust fan
Like other fans, it helps the air to circulate and the stagnant air to escape. In this fan, a function opposite to other fans is pursued. In this way, it keeps the fresh air inside the room and draws the remaining air inside the room through a small valve on it.
Hospital Rooftop Package Ventilation
Or roof unit package; Which is a combination of chiller air conditioning and air conditioning with coils. This air conditioning system works for hospitals and health centers similar to the cooling device (combination of air conditioner and condensing unit) with strong filtration and is installed on the roofs.
