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what is hvac system?

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what is hvac system?

 HVAC stands for Heating, Ventilation, and Air Conditioning and is a device that provides heat and cold and generally heat and ventilation of an environment, whether it is a building or a car. First, we will explain the full definition of Wikipedia from HVAC, then we will mention and review the types of HVAC, and at the end, we will name and explain its components. So read this article to the end and stay with us.

HVAC System Parts and Diagram

There are different parts for an HVAC system based on its application, but one can consider what occurs in an evaporative cooling system as a widely used case throughout the world and get a sense of what is generally happening in the system. The logic for heating is in a way similar and can be deduced from here. Now, the key components for a cooling system include the expansion valve, evaporator, compressor, condenser, and drier. Click for more information.

 

What is HVAC?

Heating, ventilation, and air conditioning (HVAC) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. "Refrigeration" is sometimes added to the field's abbreviation, as HVAC&R or HVACR or "ventilation" is dropped, as in HACR (as in the designation of HACR-rated circuit breakers).

HVAC is an important part of residential structures such as single-family homes, apartment buildings, hotels and senior living facilities, medium to large industrial and office buildings such as skyscrapers and hospitals, vehicles such as cars, trains, airplanes, ships and submarines, and in marine environments, where safe and healthy building conditions are regulated with respect to temperature and humidity, using fresh air from outdoors.

 

 

Ventilating or ventilation (the "V" in HVAC) is the process of exchanging or replacing air in any space to provide high indoor air quality which involves temperature control, oxygen replenishment, and removal of moisture, odors, smoke, heat, dust, airborne bacteria, carbon dioxide, and other gases. Ventilation removes unpleasant smells and excessive moisture, introduces outside air, keeps interior building air circulating, and prevents stagnation of the interior air.

Ventilation often refers to the intentional delivery of the outside air to the building's indoor environment. It is one of the most important factors for maintaining acceptable indoor air quality in buildings. Methods for ventilating a building are divided into mechanical/forced and natural types.

 

 

The DOE Zero Energy Ready Home program frequently receives inquiries about the need for qualifying projects to use an HVAC contractor who is certified by an H-QUITO1. The DOE Zero Energy Ready Home program incorporates all of the ENERGY STAR Homes provisions. While commissioning is important for all HVAC systems, Versions 3 and 3.1 of the ENERGY STAR program are focused on using a credentialed contractor to properly commission the most common heating and cooling system types. Accordingly, the ENERGY STAR Homes requirement to use a credentialed HVAC contractor also includes some important exemptions, as called out by the ENERGY STAR HVAC checklists.

 

References:

https://www.energy.gov/sites/prod/files/2016/12/f34/DOE%20ZERH%20-%20When%20is%20a%20Credential%20HVAC%20Contractor%20Required%2012142016.pdf

https://www.energy.gov/eere/buildings/heating-ventilation-and-air-conditioning-rd-project-portfolio

https://en.wikipedia.org/wiki/Heating,_ventilation,_and_air_conditioning

https://www.linquip.com/blog/what-is-hvac/

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