Difference Between AHU and FCU AHU vs FCU AHU and FCU are both included included in the HVAC system. The latter is an acronym acronym that describes multiple systems of heating, ventilating and air conditioning. AHU, completely known as air handling unit is different from FCU or the fan coil unit. AHUs are usually connected connected to a central HVAC system system whereas an FCU can function or be installed itself. Because of this, it is often the AHU t hat is used to ventilate an entire building whereas FCUs are used in smaller and often local spaces only. It is no surprise that AHU is the bigger HVAC system not to mention, t he FCU is also regarded as the smaller version of the AHU. In this regard, the smaller FCUs can be called terminal units. Because of the magnitude of the AHU system, it usually makes use of the air from the outside environment. Thus, it treats outside air and brings it inside the vicinity with the use of special ducts while an FCU system on the contrary just circulates the inside air. The latter usually does not have any duct system that’s why it is obviously smaller in size as previously mentioned. It is only composed of a simple coil and fan. Ordinarily, AHUs have certain features that are not present in the FCU type. AHUs have several sections for reheating and even humidifying. FCUs don’t have sections such as these. Perhaps the only advantage that the FCU has over the AHU is that generally, FCUs can also handle water while the AHUs basically handle air. Moreover, AHUs can have several fans or blowers installed in its system. Traditionally, the AHU’s blowers are placed at the point where the ducts originate originate or at the terminal end of the air handler unit. FCUs have a different approach to blowers. Because of its small size, their fans are usually placed within the same space as the unit itself. The result is a minor uncomfortable noise that can be heard within the vicinity. This could be regarded as the single most advantageous flaw of the FCU system. Summary: 1. AHU is generally a bigger system than FCU. 2. AHU is more complex than the FCU and that AHU are often used in bigger establishments or spaces. 3. The AHU system usually channels air through ducts whereas the FCU don’t have any ductworks. 4. AHU system treats outside air while FCUs basically recycle or re-circulates the air. 5. AHU have sections for reheating and humidifying w hereas the FCU does not have any. 6. FCU are often observed to be noisier than the AHU. AHU.
Difference Between AHU and RTU AHU VS RTU AHU stands for Air Handling Unit while RTU RTU is an acronym for Rooftop Unit. An RTU is a type of AHU and as such is there any difference between the twoAHU vs RT? There are no differences between an AHU and an RTU except for thefact thefact that an RTU is placed on the rooftop. The Air Handling Unit is a huge metal box, which helps in conditioning and circulating the air to create an ideal atmosphere. The AHU consists of components such as heating elements, cooling elements, blower or f an, filters, mixing chambers,
vibration isolators, humidifiers, heat recovery devices and controls. All these components are also present in an RTU as it is only a type of AHU. Three types of AHUs are available in the market. The Mall Air Handlers and Make Up Air Units are the other two types of AHU. The Roof Top Unit is an outdoor AHU. As the RTU is mounted on the roof, this removes the concern about creating extra space or room for fitting it as is the case for the other types of AHU. As the Unit is fitted on the rooftop, one should have more care as it is exposed to the weather. The RTU box is made of aluminum sheets or galvanized steel with a coating of corrosion resistance materials. All the components like the fan, motor, damper actuator linkages, water valves and controls are installed inside the box. Both the RTU and the AHU function in the same manner. They sucks air from the room and pass it through cooling coils. After this the cold air is discharged into the room. The moisture in the air is condensed as it passes through the cooling coils. Summary 1. An RTU is a type of AHU. 2. AHU stands for Air Handling Unit and the acronym RTU means Rooftop Unit. 3. The Roof Top Unit is an outdoor AHU. 4. As RTUs are mounted on the roof, there is no concern about creating extra space indoors for it as would be the case for the other types of AHU. 5. As the RTU is fitted on the rooftop, one should have more care as it is exposed to the weather. 6. Both the RTU and the AHU function in the same manner. They suck air from the room and pass it through cooling coils. 7. The AHU and RTU consists of components such as heating elements, cooling elements, blower or fan, filters, mixing chambers, vibration isolators, humidifiers, heat recovery device and controls.
Difference Between AHU and HVAC AHU vs HVAC What are AHU and HVAC? AHU, which is Air Handling Unit is an appliance used to circulate air. HVAC is Heating, Ventilating and Air Conditioning system. HVAC is the central unit to which AHU is connected. AHU is only a part of HVAC and as such there is hardly any difference between then two. HVAC mainly refers to the technology of automotive environmental comfort. The Heating, Ventilating and Air Conditioning system uses the principles of fluid mechanics, thermodynamics and heat transfer. The discoveries of by Michael faraday, Nikolay Lvov, Reuben Trane, William Rankine Wills Carrier, James Joule and Sadi Carnot among others had paved the way for Heating, Ventilating and Air Conditioning system. HVAC comes in medium to large designs. HVAC is used to condition the atmosphere in industrial houses, skyscrapers and aquariums. Air Handling Unit is a large metal box that conditions the air, which helps in creating a perfect atmosphere. Blower/fan, Heating and/or cooling elements, Filters, Humidifier, Mixing chamber, Heat recovery device, Controls, Vibration isolators are some of the components that make a AHU. Air Handling Unit comes in three types.
The Mall air handlers or terminal units are used for local use They mainly consist of coil, air filter and blower. Then there is the Make up Air Unit, which is larger air handler. The third one is the Roof Top Unit, which is mainly used for outdoor use. It is mainly fitted n the roof of a building. As AHU is only part of HVAC, it can be hard to make out a difference between the two. As seen earlier, one system is part of another system and hard to differentiate them. Summary 1. AHU is Air Handling Unit. HVAC is Heating, Ventilating and Air Conditioning system. 2. HVAC is the central unit to which AHU is connected. AHU is only a part of HVAC. 3. HVAC comes in medium to large designs. HVAC is used to condition the atmosphere in industrial houses, skyscrapers and aquariums. 4. Air Handling Unit is a large metal box that conditions the air, which helps in creating a perfect atmosphere. 5. Air Handling Unit comes in three types — Mall Air Handlers Make up Air Unit and Roof Top Unit. 6. As AHU is only part of HVAC, it can be hard to make out a difference between the two.
