Operation control method of fluid heating road snow-melting system

A technology of operation control and road, which is applied in the direction of auxiliary controller with auxiliary heating device and electric temperature control, etc. It can solve the problems of blind setting of system operating parameters and inability to effectively control the snow melting process, etc., and achieve good snow melting effect , Reduce system operating costs and reduce negative effects

Inactive Publication Date: 2016-05-11
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing fluid heating road snow melting system has blind system operation parameters during the operation process and cannot effectively control the different stages of the snow melting process, and proposes an operation control of the fluid heating road snow melting system method

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  • Operation control method of fluid heating road snow-melting system
  • Operation control method of fluid heating road snow-melting system
  • Operation control method of fluid heating road snow-melting system

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specific Embodiment approach 1

[0042] The operation control method of the fluid heating road snow melting system in this embodiment combines figure 1 Described, described method is realized through the following steps:

[0043] Step 1. Determine the three snowmelting stages of the fluid heating road snowmelting system: the stage to be melted, the snowmelt stage, and the evaporation stage after melting. Density represents the melting ability of road surface snow, and the average liquid-vapor phase change heat flux after melting represents the water evaporation capacity of road surface in the evaporation stage after melting;

[0044] Step 2. Using the numerical simulation method, establish a simulation evaluation system for the snow melting performance of fluid heating roads, and realize the accurate acquisition of the time to be melted, the average phase change heat flux during the snow melting process, and the average liquid-vapor phase change heat flux 5 hours after melting;

[0045] Step 3. Obtain releva...

specific Embodiment approach 2

[0059] The difference from the first specific embodiment is that in the operation control method of the fluid heating road snow melting system in this embodiment, in the first step, the snow melting performance in the waiting stage is characterized by the waiting time to melt, wherein,

[0060] The stage to be melted refers to the stage from the moment when the fluid heating road snow melting system is started to the road surface temperature reaches freezing point; at the initial moment of the operation of the fluid heating road snow melting system, the heat generated by the fluid heating road snow melting system is mainly used to increase the road temperature; when the road surface temperature is low When the temperature is at the freezing point, the snow on the road surface is in a dry snow state. After the system has been running for a period of time, the temperature of some areas on the road surface reaches the freezing point, and the snow begins to melt at this time; accord...

specific Embodiment approach 3

[0064] The difference from Embodiment 1 or Embodiment 2 is that in the operation control method of the fluid heating road snow melting system in this embodiment, the average solid-liquid phase change heat flux in the snow melting stage is used to characterize the road surface snow melting ability in step 1, wherein,

[0065] The snowmelt stage refers to the stage when the snow at a certain point on the road surface starts to melt until the snow is completely melted; when some areas on the road surface just start to melt, the upper layer is dry snow and the lower layer is a mixture of snow and ice and snow; as the fluid heats the road The snow melting system continues to operate, and the upper snow gradually melts, forming a mixture of ice and snow, and with the continuous operation of the fluid heating road snow melting system, the melting is finally completed and water is formed; this stage is essentially a phase transition of snow from solid to liquid Therefore, the average s...

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Abstract

The invention provides an operation control method of a fluid heating road snow-melting system, and belongs to the field of operation process control of the fluid heating road snow-melting system. The problems that in the operation process of the conventional fluid heating road snow-melting system, the setting of system operation parameters is blind, and different stages of the snow-melting process cannot be effectively controlled are solved. The operation control method of the fluid heating road snow-melting system includes: determining a to-be-melted stage, a snow-melting stage, and an after-melting evaporation stage of the fluid heating road snow-melting system; establishing a fluid heating road snow-melting performance simulation evaluation system by employing a numerical simulation method; obtaining related influence factors for influencing the operation status of the fluid heating road snow-melting system; regarding the related influence factors as the operation parameters of the fluid heating road snow-melting system, bringing forward a parameter setting mode, and making a control method. According to the method, the system parameters are reasonably adjusted according to the snow-melting characteristics, the operation cost of the system is reduced, and the snow-melting effect is good.

Description

technical field [0001] The invention relates to an operation control method of a fluid heating road snow melting system. Background technique [0002] Snow on the road surface is easy to form thin ice under the action of low temperature and vehicle load, which threatens road traffic safety and restricts road traffic capacity and transportation efficiency. Among the many ways to remove ice and snow on roads at home and abroad, chemical deicing agents are widely used due to a series of advantages such as wide sources of materials and low prices, but its use limitations and subsequent negative effects have prompted scholars from various countries to propose the use of The energy conversion road snow melting system replaces the chemical snow melting agent to actively prevent the road surface from icing. According to different energy sources, it is mainly divided into fluid heating system, heat pipe heating system and electric heating system. Among them, the fluid heating syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/30
CPCG05D23/30
Inventor 徐慧宁谭忆秋周晶周纯秀张驰苏新陈凤晨
Owner HARBIN INST OF TECH
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