10.3.3. General information for ventilation of compressor rooms


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Fig. 10.4: Arrangement of air inlet and outlet apertures
This chapter specifies the most important conditions concerning air supply and extraction that must be satisfied by the installation room of one or more air-cooled compressors. They are based on the requirements set forth in VDMA specification sheet 4363 „Ventilation of installation rooms for air-cooled compressors“.
    • Hot air always rises. To allow an effective exchange of heat, the (inlet) apertures for the supply of cold air must be located close to the ground and the (outlet) exhaust apertures must be in the ceiling or in a side wall at the top.
    • The compressor must be installed next to the air inlet aperture A in so that it draws fresh air for compression and cooling air for ventilation directly from the inlet aperture A in .
    • The compressor must be positioned so that it can not re-induct its own heated exhaust air.
    • The inlet apertures or ducts of the compressor must be arranged so that dangerous admixtures (e.g., explosive or chemically unstable substances ) can not be inducted.
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Fig. 10.5: Installation room with three sound-insulated
compressors
    • The exhaust air should flow from the compressor via the compressed air receiver (if fitted) to the outlet aperture A out . The assemblies in the installation room should be arranged accordingly.
    • Adjustable roller shutters must be installed in the air inlet apertures A in . This allows the flow of cold air from the outside to be reduced and the temperature should then not fall below the minimum admissible level in Winter. If this is not sufficient, the compressor must be equipped with its own heater. The accessories required can be obtained from BOGE.
    • When installing several compressors in one room, care must be taken that there is no thermal interaction between them. If one compressor draws in the exhaust air from another compressor, the system will overheat. The ventilation must cater for the total cooling-air requirement for all compressors. Ideally, each compressor should have its own air inlet aperture of a size according to its need.