Direct-fired units
utilize air that will be sent to the heated space for combustion
without use of a heat exchanger. The products of combustion are mixed
directly with large volumes of outdoor air. Such mixing is considered
safe because of the high dilution ratio. Buffalo Blower Co. have
completed a major re-design of its line of industrial air makeup units
for building ventilation. In industrial plants where there is a high
density of employees and many manual operations involved, an
improvement in the environment can produce substantial benefits in
terms of increased production, reduced errors, and a decline in
complaints and absenteeism among employees. A Direct Gas-Fired
Air-Handling Unit AHU may be used as a primary or secondary source to
heat a building space. When used for this application, a room
thermostat controls unit outlet air temperature.
The axial flow fans are widely used for providing the required airflow
for heat & mass transfer operations in various industrial equipment
and processes. These include cooling towers for air-conditioning &
ventilation, humidifiers in textile mills, air-heat exchangers for
various chemical processes, ventilation & exhaust as in mining
industry etc. All the major industries use large number of axial flow
fans for operations, such as :
- Power generation
- Petroleum refining & petrochemicals
- Cement industry
- Chemicals & pharmaceuticals production
- Fertilizer production
- Mining manufacturing
- Humidification in textile mills
- building Ventilation, etc..
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