HVAC (heating, ventilation and air conditioning, and heating, ventilation and air conditioning) is the technology of interior comfort and vehicle. It aims, thermal comfort and indoor air quality is acceptable. HVAC system design is a branch of engineering that. On the principles of thermodynamics, fluid mechanics and heat transfer Refrigeration is sometimes the abbreviation of the field as HVAC & R or building services or ventilation is taken as in HACR fell (as the designation of HACR-rated circuit breakers). http://en.wikipedia.org/wiki/HVAC Peak Performance HVAC
HVAC is controlled in the construction of medium and large industrial and office buildings as skyscrapers and in marine environments such as aquariums, where safe conditions and healthy construction in terms of temperature and humidity, the use of air important chilly outside.
Ventilation or Ventilation (V in the HVAC) is the process of "change" or replacing air in any room a high quality of indoor air, which includes the control of the temperature, the supply of oxygen and removal available to provide moisture, odors, smoke, heat, dust, bacteria, air and carbon dioxide. Removed to introduce ventilation unpleasant odors and humidity outside air, keeps the air inside the building circulation and prevents stagnation of the interior air.
Ventilation includes air exchange and outside air flow in the interior of the building. It is one of the most important for acceptable indoor air quality in the buildings factors. Method for ventilation of a building can be divided into mechanical / forced and natural types.