Method for determining running frequency of heat discharge fan of metro shielding door system
A technology of operating frequency and determination method, which is applied in mechanical equipment, earthwork drilling, machine/engine, etc.
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[0048] Preferred embodiments of the present invention will be described in more detail below.
[0049] A method for determining the operating frequency of the heat exhaust fan in a subway screen door system, using a tunnel temperature sensor to monitor the tunnel wall temperature t in real time 隧 , and calculate the temperature rise rate. When the temperature rise rate is greater than the temperature rise rate threshold, the heat exhaust fan is turned on. The operating frequency f of the aforementioned heat exhaust fan is calculated by the following steps:
[0050] 1. Input Q=(train’s incoming brake heat exhaust Q1+vehicle air conditioner condenser heat release Q2)-shielding door heat transfer Q3
[0051] (Q1, Q2 are given by the factory parameters of the train, and Q3 is calculated by the following formula)
[0052] Shield door heat transfer Q3=k×F1×Δt1 / 1000X
[0053] In the formula: F1 is the heat transfer area of the screen door (m 2 ); Δt1 is the temperature differenc...
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