What is HVAC? 10 Incredible Facts on HVAC Systems
Introduction
HVAC is a commonly used term in the construction industry these days. HVAC systems have a great impact on the comfort and health of the residents of a building. What is HVAC? How does HVAC system design impact climate change and your life? Read further to learn the answers to these questions and more about HVAC.
What are HVAC Systems?
HVAC is the short form of heating, ventilation, and air conditioning. It includes all systems and components involved in air circulation and heating and cooling of buildings. HVAC is responsible for keeping you warm in winter and cool in summer. The right HVAC design controls humidity and maintains air quality to ensure good health and comfort.
What are the Types of HVAC Systems?
Split System
This is the most common type of HVAC system. It has two components, one for heating and one for cooling. This type has a traditional thermostat to control the temperature.
Hybrid Split System
The system uses gas and can also switch to electric power. A hybrid system enables power saving as you can control the energy consumption.
Packaged Heating and Cooling System
This system is suitable for small homes because it is smaller in size. It is stored in the roof or attic and connected to the ducts through a hole.
Zoned System
This system allows you to control the temperature throughout your home by creating customized temperature zones.
Ductless System
They are mini-split systems and are installed in a single room. This is the most common system used in most homes.
How do HVAC Systems Work?
HVAC systems may work with the help of a condenser or heating pump. They both remove hot air from inside your home and move it outdoors. A condenser does the cooling work only whereas the heating pump can do both heating and cooling jobs.
Boilers, furnaces, and heat pumps heat your home by employing processes like conduction, radiation, and convection and using resources like gas, oil, and electricity. Chillers, air conditioners, and cooling towers cool your homes.
Once the air is warmed or cooled it will be distributed throughout the room with the help of ductwork or air handler. If your system is ductless, the air will be moved with the help of refrigerant lines.
Ventilation plays an important role in HVAC system design because it brings in fresh air from outdoors. Moreover, HVAC course includes large fans to propel carbon dioxide in large commercial buildings and parking garages.
The components of the system include
Thermostat control which activates the system to maintain the desired temperature
Heating or cooling sources to generate or extract heat
Air handlers that circulate the air throughout the building
Ductwork to distribute air to different zones in centralized HVAC systems
Ventilation to maintain indoor air quality.
What are HVAC Systems Requirements?
The first and foremost requirement is the right size to meet the building's heating and cooling needs. This is done by HVAC load calculation. The next requirement is proper ventilation to ensure proper distribution of the conditioned air and indoor air quality. HVAC design engineers also recommend regular maintenance, system inspections, filter replacement, and coil cleaning for optimal performance.
10 Interesting Facts About the HVAC System
Willis Carrier invented the first AC unit to lower humidity and allow printing ink to dry in hot weather in his printing house.
Earlier, air conditioners were too large and heavy and more than six feet tall.
Units that had both cooling and heating units were introduced at first in 1977.
Ductworks have a history dating back to 300 B.C. when the Romans installed tubes beneath the floors to propel hot air outside.
An efficient HVAC system designed by HVAC design engineers keeps your family healthy by removing allergens, bacteria, and mold from the air.
Proper insulation of your home like sealing windows and door cracks will help reduce energy consumption by almost 25%.
Dirt will clog the air filter, decrease the performance of your HVAC unit and increase your energy bills.
Switching ceiling fans on when HVAC units are running will increase your energy bills.
Without proper ventilation air will become stale.
The productivity of employees increases when the temperature is around 22 degrees Celsius.
Conclusion
HVAC design training is important for HVAC design. A course in HVAC technician training will help you to accurately design HVAC systems and make accurate HVAC load calculations. Enroll in Arabian Infotech for HVAC training and electrical technician training.
FAQs
What Is The Most Commonly Used HVAC System?A standard split system featuring an outdoor and indoor unit is the most commonly used HVAC system.
Do HVAC Systems Use Outside Air?Air conditioners do not bring in outside air but proper ventilation included in HVAC systems brings in fresh outside air.
In An Air Conditioning System, How Is Heat Added To The Air?The heat pump reverses coils by bringing heat from outside to the inside of your home.
Is It Hard To Design An HVAC System From Scratch?You should know the principles of airflow, air pressure, and velocity. An HVAC design training will help.
What is the Purpose of a Heat Wheel in an HVAC System?
It rotates between the supply and exhaust air systems to pick up heat energy and release it.