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.

Active Publication Date: 2018-02-16
田炳权
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Problems solved by technology

[0004] The purpose of the present invention is to propose a method for determining the operating frequency of the heat exhaust fan of the subway screen door system for the problem of temperature control of the subway screen door system

Method used

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  • Method for determining running frequency of heat discharge fan of metro shielding door system
  • Method for determining running frequency of heat discharge fan of metro shielding door system
  • Method for determining running frequency of heat discharge fan of metro shielding door system

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Embodiment Construction

[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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Abstract

The invention provides a method for determining a running frequency of a heat discharge fan of a metro shielding door system. A tunnel temperature sensor is adopted for monitoring a tunnel wall surface temperature t in real time; a temperature rise rate is calculated; and when the temperature rise rate is greater than a temperature rise rate threshold, the heat discharge fan is started. Accordingto the method, a control policy for a tunnel heat discharge fan and a large system fan is optimized mainly; policy optimization is performed in an initial stage, so that energy is saved by about 7.7%and electricity is annually saved by 388,000KWh in total; the policy optimization is performed in a recent stage, so that the energy is saved more remarkably and is saved by about 17.6%, and the electricity is annually saved by 1,161,000KWh in total; and the policy optimization is performed in a future stage, so that the energy is saved more remarkably and is saved by about 21.2%, and the electricity is annually saved by 1,950,000KWh in total.

Description

technical field [0001] The invention relates to the field of urban railway transportation, more specifically to a method for operating a fan of a screen door system, and to a method for determining the operating frequency of a heat exhaust fan of a subway screen door system. Background technique [0002] Nanjing Metro Line 10 has a total length of 23.6 kilometers and 14 stations. Among them, the river-crossing tunnel has a total length of 3,600 meters. The first line of the subway to adopt screen door system. Moreover, there is currently no exact data on the operation mode of the tunnel heat exhaust fan of the screen door system to support the load analysis and composition of the screen door system. It can be seen that the calculation of the air conditioning load in the screen door system does not include the heat produced by the train brake drive and the condensation of the train air conditioner. The radiator heat dissipation, and these two heat dissipation are the first a...

Claims

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Application Information

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IPC IPC(8): G06F19/00E21F1/00F04D27/00
CPCE21F1/003F04D27/00G16Z99/00
Inventor 田炳权高俊逸
Owner 田炳权
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