TVF fan (reversible, high-temperature resistant axial flow fan for subway tunnels)
TVF stands for Tunnel Ventilation Fan, a specialized bidirectional reversible axial flow fan designed for subway and urban tunnels. It is primarily used for daily tunnel ventilation, train air exchange during blockages, and smoke exhaust during fire or high-temperature scenarios; it is also commonly referred to as DTF(R) reversible tunnel fan.
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