Introduction to HVAC systems



Posted: Tuesday, March 31, 2009

by Mohamed Fawzy
consulting

1.The goal of HVAC system:

The goal of the heating, ventilating, and air conditioning (HVAC) system is to create and maintain a comfortable environment within a building.


2- Comfort Requirements:

A comfortable environment, however, is broader than just temperature and humidity. Comfort requirements that are typically impacted by the HVAC system include:

· Dry bulb temperature
· Humidity
· Air movement
· Fresh air
· Cleanliness of the air
· Noise levels


3- Dissecting HVAC system:

Dissecting HVAC system is a method for understanding the components of different types of HVAC system.


The premise of this method is that any HVAC system can be dissected into basic subsystems will be referred to "loops".


There are five primary loops that can describe any type of HVAC systems:
· Air side loop.
· Chilled water loop.
· Refrigeration loop.
· Heat rejection loop.
· Control loop.


Please note that not every system will use all five loops.





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Mohamed Fawzy is a mechanical engineer who has a good experience in air conditioning,fire protection and plumbing systems design.

He is currently working as a design engineer for allied consultant company since 2005 till now.He enjoys helping others succeed and he teaches his strategies in the design via his lessons

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Top-level comments on this article: (3 total)
» left by Connor Davidson
3 years 47 days ago.
95 fans. Follow Connor Davidson on twitter!
Great article. Well done.
 
Is HVAC for use only in large buliding or can it be used in small buildings also?
» left by Mohamed Fawzy 3 years 47 days ago.
Thank you for your replay . HVAC  used in all types of building (small-large)
» left by Anonymous
3 years 46 days ago.
Great Information put in a lay man's language.... you have explained the complex systems.. in such a manner that anyone can understand.... goodwork... I'm waiting for the all the system loops explanation....
» left by Anonymous
3 years 46 days ago.
Great Information put in a lay man's language.... you have explained the complex systems.. in such a manner that anyone can understand.... goodwork... I'm waiting for the all the system loops explanation....
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