The evaporation of water caused by the heating will increase the humidity level of the surrounding air. Steam Pan Type has a pan and a heating coil to heat up the water of the pan. Spray Type has a header and spray nozzles that spray water with a pressure of 15 psi or more. The humidity of the air is increased by using the humidifiers. Roll Filter is used for high velocity filtration where the used part is rolled up automatically/manually.ĭuring winter, the humidity level of the air can be low hence causing discomfort to the occupants. Bag Filter is able to remove dust particles and is thrown away after use. It is usually used in clean room applications such as semiconductor production floor, operating theaters and critical processes.Įlectrostatic Filter is used to remove particles from the air by using highly charged electrodes that ionized the air. HEPA Filter is very efficient and is able to achieve efficiencies up to 99.97%, removing minute particles and airborne bacteria from the air. Typical air velocity that moves through the filters is in the range of 2-3 m/s. The high velocity filter is arranged vertically whereas the low velocity filter is arranged in V shape. Panel Filter is a flat and rectangular in shape and provides a minimum low efficiency filtration which is acceptable to the air conditioning industry. The type of air filter being used will very much depend on the application of the system. The corrosion resistance hydrophilic fins are also used due to its lower cost and lower resistance to the air velocity.įilters are to remove particles and contaminants of various sizes from the air. Aluminium fins and copper tubes are used in the design of the coils. These coils are arranged in rows with different fin spacing. Both DX (direct expansion) cooling and CW (chilled water) cooling coils are available for use depending on the system design. This technology has enabled better use of energy and is in tandem with the move to go for greener energy.Ĭooling Coil is used to cool and dehumidify the air. Frequency inverter provides better control of the fan speed as a whole range of fan speed from super low to super high can now be utilized based on the load conditions required. The speed of the fan is varied by using frequency inverter instead of conventional motor such as PSC motor. If the load is high, the fan speed will be higher and if the load is lower, the speed of the fan will be lower. In recent years, the use of variable air volume (VAV) system is becoming more popular as the volume of the air being discharged can be varied depending on the load condition. In order to reduce the effect of vibration on the panel, the motor and the fan are usually installed on the vibration isolator except when the drive assembly is external to the fan casing.
#AIR CONDITIONER ISOLATOR FACTORIES SOFTWARE#
Usually, the designer of the system will use a specialized software to do this selection. The selection of the fan will depend on the air volume and the static pressure required of the system. The typical types of fan available are Backward Inclined, Backward Curved, Forward Curved and Airfoil.
Drain pan is also used as a precaution in the event of condensation of water.Ĭentrifugal fan is used to circulate the air to the various parts of the sections in the building. In sections where the fans and the coil are located, 1-2 inches of polyurethane foam or PU is used to insulate them to prevent the condensation on the panel. The housing that contains all the other components of an AHU is usually make of metal, some are painted to prevent corrosion. Here are some of the air handling unit components that may be contained in the equipment. An air handling unit where (1) is the supply air, (2) fan section, (3) vibration isolator, (4) cooling coil, (5) filter and (6) mixed air duct.
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