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A jet fan that has operated for a long period of time needs to be repaired due to degradation from corrosion, etc.
Hitachi carries out periodic inspection and repairs, improves the energy efficiency of equipment to prevent global warming, and preserves the environment near tunnel openings by reducing noise etc.
Tunnel ventilation equipment plays an important role in ventilation of road tunnels, so the equipment must be constantly kept in good condition. In particular, jet fans operate for long periods of time under harsh conditions in tunnels, so degradation over time is unavoidable.
We have a wide range of options for renewal of: