System and method for measuring calorific value of equipment in subway equipment room

A measurement system and measurement method technology, applied in the direction of measuring heat, measuring devices, calorimeters, etc., can solve the problems of difficulty in determining the equipment load of the equipment room, large calculation value of calorific value, and large proportion, etc., to save installed capacity and Construction cost, reduction of energy consumption and carbon emissions, effect of reducing design value

Pending Publication Date: 2022-05-17
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The equipment load of the subway equipment room accounts for a large proportion of the total air-conditioning load of the subway equipment room, and the air-conditioning load of the equipment room of the subway station is relatively complicated, and it is difficult to determine the corresponding equipment room equipment load. Calculation; Due to the lack of accurate measurement methods and special measurement equipment systems for the heating capacity of subway equipment rooms, the current domestic subway air-conditioning system design lacks accurate and reliable basis and reference values ​​for the heating value of equipment in subway equipment rooms, and it is difficult to accurately determine the heating value of subway equipment. Equipment air-conditioning load brings difficulties to the design of subway air-conditioning systems
[0004] When designing domestic subway air-conditioning systems, the calorific value of equipment in subway equipment rooms is generally too large, resulting in a large design value of air-conditioning load in subway equipment rooms, which not only increases the construction cost of air-conditioning systems and civil engineering, but also increases the capacity of subway air-conditioning systems. Therefore, it is particularly important to accurately measure the calorific value of equipment in subway equipment rooms, which can provide a reliable reference and basis for the design and calculation of subway equipment load, and can reduce the installed capacity of the subway air-conditioning system. Subway air-conditioning construction cost, reduce the energy consumption of the subway air-conditioning system, and reduce the carbon emissions of the subway air-conditioning system

Method used

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  • System and method for measuring calorific value of equipment in subway equipment room
  • System and method for measuring calorific value of equipment in subway equipment room
  • System and method for measuring calorific value of equipment in subway equipment room

Examples

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Effect test

Embodiment 1

[0034] Such as figure 1 and figure 2 As shown, the present embodiment provides a system for measuring the calorific value of equipment in a subway equipment room, including an indirect method for measuring the calorific value of subway equipment and a direct method for measuring the calorific value of subway equipment connected to the same data logger 7. for recording and saving sensor data.

[0035]The system for measuring the calorific value of subway equipment by the indirect method includes an insulated canvas wind bag 1, two enthalpy sensors, two air volume sensors, and a fan 2, wherein the sensors are connected to a data recorder 7.

[0036] Such as figure 1 As shown, the adiabatic canvas airbag 1 covers the subway equipment, and an air outlet is provided at both ends of the adiabatic canvas airbag 1, one air inlet is used for air intake, and the other air outlet is used for air exhaust; the fan 2 is used for The air flows in the air bag to provide power, the air inl...

Embodiment 2

[0040] Utilizing a kind of system for measuring the calorific value of equipment in a subway equipment room in Embodiment 1, this embodiment provides a method for measuring the calorific value of equipment in a subway equipment room. The following steps are used to determine the calorific value of subway equipment:

[0041] Step 1, according to the data obtained by measuring the heating value of subway equipment by the indirect method, calculate the heating value Q of subway equipment 1 calculation.

[0042] Specifically, formula (1) is used to calculate the calorific value Q of subway equipment 1 The calculation of , where formula (1) is as follows:

[0043] Q 1 =m in h in -m out h out (1)

[0044] In the formula, m in is the mass flow rate at the air inlet of the wind bag; m out is the mass flow rate at the air outlet of the wind bag; h in is the enthalpy value of the air at the air inlet of the wind bag; h out is the air enthalpy at the air outlet of the wind ba...

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Abstract

The invention discloses a metro equipment room equipment heating value measuring system and method, relates to the technical field of metro equipment rooms, and solves the technical problem that an accurate metro equipment room equipment heating value measuring method and a sensor system specially used for measuring metro equipment are lacked. The system comprises an indirect method metro equipment calorific value measurement system and a direct method metro equipment calorific value measurement system which are connected with the same data recorder, and metro equipment calorific value data are measured by comprehensively adopting a direct measurement method and an indirect measurement method. The direct measurement method metro equipment calorific value measurement result and the indirect measurement method metro equipment calorific value measurement result are mutually corrected and verified through calculation, the accuracy of the metro equipment calorific value measurement result is improved, the installed capacity of a metro air conditioning system can be reduced, and the operation energy consumption and carbon emission of the metro air conditioning system can be reduced.

Description

technical field [0001] The present invention relates to the technical field of subway equipment rooms, and more specifically relates to a system and method for measuring the calorific value of equipment in a subway equipment room. Background technique [0002] As a powerful tool of urban rail transit, the subway has become the main means to solve the problem of urban traffic congestion; due to the huge investment in the subway and the obvious public welfare characteristics, it has increased the local debt burden to a certain extent. The construction of the subway should strengthen the survey and design, and strive to increase investment benefit. [0003] The equipment load of the subway equipment room accounts for a large proportion of the total air-conditioning load of the subway equipment room, and the air-conditioning load of the equipment room of the subway station is relatively complicated, and it is difficult to determine the corresponding equipment room equipment load...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K17/12
CPCG01K17/12
Inventor 李国栋夏三县林昶隆任磊篮杰邓敏锋余伟之孙心明陈慧
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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