Now I am pretty confident about my basics. I’m addicted. An Air Handling Unit (AHU) is used to re-condition and circulate air as part of a heating, ventilating and air-conditioning system. This uses a large rotating wheel, half of it sits within the exhaust air stream and half of it sits within the fresh air intake.
In this article we will be covering this topic to understand the basics of HVAC central plant. The AHU’s and FCU’s are basically boxes with fans inside that suck air in from the building and push it across the heating or cooling coils to change the temperature of the air and then push this air back out into the building. Possibly someone has placed a bin near the air vent intake grille. If we don’t have these filters the dust is going to build up inside the ductwork and within the mechanical equipment, it’s also going to enter the building and be breathed in by the occupants as well as make the building dirty. If the air is too hot then the cooling coil will remove heat to lower the air temperature and reach the setpoint. In a big building, the system needs to be able to function based on comfort need as well as meet the size of the space. I have not observed any eqpmnt in project material as Evp & condenser.
They might not have a return duct, some older designs rely on the air just leaking out of the building. We’ve covered VAV systems separately, you can watch a video tutorial to that by Then we have the ductwork which will send the air around the building to the designed areas.
This will reduce the heating demand of the heating coil when the outside air temperature is below the supply setpoint temperature and the return air temperature is higher than the setpoint, the heat would otherwise be rejected to atmosphere. Thanks for the great videos!Paul, great videos! All exhaust air is removed, which creates an acceptable indoor air quality. !Very hard to tell from the information provided. I’m sure your safety regulations are different in the UK (I’m in the US) but the procedures would generally be the same. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. In this article we’ll be learning how Air Handling units, or AHU’s, work. By the time it leaves the condenser it will be around 32°C (89.6°F). An Air Handling Unit (AHU) is used to re-condition and circulate air as part of a heating, ventilating and air-conditioning system. These are there to try and catch all the dirt and dust etc from entering the ahu and the building. But opting out of some of these cookies may have an effect on your browsing experience.How a Chiller, Cooling Tower and Air Handling Unit work togetherClick to email this to a friend (Opens in new window)This website uses cookies to improve your experience.
In this article we’ll be learning how Air Handling units, or AHU’s, work. So many technicians need to understand its importance.You have really written an informative blog with your full efforts its really amazing and useful.Very nice article. The chilled water heats up and the air blowing across it cools down. An air handler, or air handling unit (often abbreviated to AHU), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning system. The system is basically just metal ducting around the building with air moving inside. We’ll find a humidity sensor at the outlet of the supply AHU to measure the moisture in the supply air, this will also have a setpoint for how much moisture should be in the air by design.If the airs moisture content is below this value then we need to introduce moisture into the air using a humidifier, this is usually one of the last things in the AHU. AHU’s will serve a specified area or zone within a building such as the east side, or floors 1 – 10 or perhaps a single purpose such as just the buildings toilets. I’m addicted.