Heating, Ventilating, and Air Conditioning (HVAC) facilities serve as heating or cooling systems for homes, industrial or business buildings. HVAC equipment, therefore, provides numerous benefits to occupants of such buildings.
The HVAC system plays an important role in providing fresh air which will help outdo the bad odor generated by the occupants of the building, the items that are present in the room or even chemicals that are meant for cleaning. A system that is well designed will ensure your comfort. HVAC companies use various mechanisms to ensure air conditioning is working to ensure your comfort and uninterrupted relaxation.
Working of air conditioner
An air conditioner removes moisture and cools the air as it passes through its surface. The coil act to exchange heat between air and liquid, there are tubes that pass the liquid through the coil. There are also finned surfaces that are joined to these tubes and hence, increase the surface area of the cold surface in turn elevating heat transfer between the liquid in the coil and the air passing over.
Various types of liquids can be used but depending on the system chosen. Refrigerant and chilled water are some of the examples of liquids that can be used. The refrigerant is used by Direct-expansion equipment as a liquid medium. The liquid at a cold temperature is usually supplied to the cooling coil.
In direct expansion equipment, the cold liquid refrigerant is heated by the air passing over the indoor cooling coil. The heating that results causes evaporation to a warm gas which is then pumped to the compressor.
In some instances, special equipment known as an accumulator serves to ensure that only vapor enters the compressor to undergo the compression and not the liquid refrigerant. The effect of compression is observed by the increase in pressure and the temperature of the vapor. The compressor then thrusts the vapor through an ex-changer which is the outdoor condenser, a place where heat is expelled and the hot gas liquefied to become warm and having high pressure.
This liquid is then pumped through a liquid line and later to a dryer. It is then pumped to an expansion device where it converted to a cold and low-pressure liquid. The liquid enters the indoor cooling, and the whole procedure repeats itself. This represents the working of the heating and air conditioning.
Factors that affect total cooling
There are two possible fates for the air that passes over the coil’s surface. There is sensible cooling and latent cooling. Sensible cooling refers to lowering of the temperature of air whereas latent cooling refers to the removal of moisture from the air. The sum of both latent and sensible cooling gives the total cooling capacity of the air-conditioning system.
Whenever total capacity increase, the outdoor temperature decreases eliciting an inverse proportionality. However, air flow over indoor cooling system shows a direct relationship in which case as air flow increases, also does the total capacity.
Relevance of good relationship with HVAC Company
Maintaining a good relationship with a reliable HVAC company will guarantee your comfort. This is because problems of bad odor while relaxing will be eliminated as well as ensuring the building is kept at a good temperature to enhance the comfort
of its occupants.