The options offer more freedom in air handling design increasing the. A quick introduction to air handling units airfixture. June 1, 2015 ld09624 indoor solution xt ahu outdoor solution xt ahu york custom ahu ld282 r enewal p arts. Trox engineers look beyond the actual air handling unit. Connected to the hvacs ductwork, ahus are installed inside and outside of buildings, with the rooftop being common for the latter. Air handling unit basics ahus are large metallic boxes comprising of a blower, filter racks, sound attenuators to reduce noise, and cooling andor heating coils.
Guidance for filtration and aircleaning systems to. Ahu air handling units dampers coils and valves fans distribution ducts and terminal boxes pumps and plumbing control devices and control loops unitary equipment. Largersized aerosols can be collected on lowerefficiency filters, but the effective removal of a smallsized aerosol requires a higherefficiency filter. Measurements, using tracer gas dilution technique have detected various malfunctions in several units. Air handling units condition and distribute air within a building. A fullline of air handling units from standard through custom offer design flexibility to balance performance and economy without compromising quality. Airhandling unit casings air conditioning, heating and. Translation of the original document fr7499511, 07. The units are manufactured in accordance with en 10346 and en 10143. It discusses about the construction of air handling unit. The fan impellers and shafts are statically and dynamically balanced as a single modular steel. Air handling design guide air handling systems dust. Air handling system is a device used to condition and circulate air as a part of heating, ventilation and air conditioning hvac system.
This paper addresses real energy recovery with air handling units. Air handling units explained the engineering mindset. Ld17323 air handling units operation and maintenance new release form 102. The numerical value associated with the rating class cannot be used to predict actual application thermal transmittance through casing or the risk of condensation for any specific central station air handling unit. Solution air handling units dual fan options new release form. They take fresh ambient air from outside, clean it, heat it or cool it, maybe humidify it and then force it through some ductwork around to the designed areas within a building. The module can be configured for different applications to make up the heart of any air conditioning system. The daikin air handling unit is manufactured with prefabricated. Air handling units have a closed profile and airtight structure and manufactured from galvanized sheet material or stainless steel material standard for hygienic with 140 grm2 zinc coating, available in different thicknesses up to 1.