Laboratory Observation Method of Surface Radiation Coefficient of Temperature and Drainage Mathematical Model of Binhai Power Plant

Abstract

The invention belongs to the field of environmental engineering and relates to a method for laboratory observation of a surface heat transfer coefficient of a coastal power plant warm water discharge mathematical model, in particular to a method for simulating thermal dissipation of a coastal power plant warm water discharge region and obtaining the surface heat transfer coefficient in the laboratory. The method comprises research hydrology and meteorological data collection, experiment boundary condition arrangement, experiment initial condition arrangement, temperature dropping process simulation and calculation of a surface heat transfer coefficient sequence of warm water discharge in a measurement time interval. A laboratory observation device of the surface heat transfer coefficient comprises a simulation environment tank, a water temperature dropping observation tank, a front rectifier, a back rectifier a wind speed regulator, a temperature regulator, a humidity regulator, an air mixer, an air mixed flow cavity and a heat insulation shell. The method has the advantages that a method for actually measuring the surface heat transfer coefficient is provided; and the laboratory observation device for the surface warm heat transfer coefficient is provided.

Description

technical field [0001] The invention relates to a laboratory observation method for surface heat dissipation coefficient of a mathematical model of temperature and drainage of a coastal power plant, which belongs to the field of environmental engineering, in particular to a method for simulating heat dissipation characteristics of a temperature discharge area of ​​a coastal power plant in a laboratory and obtaining a surface heat dissipation coefficient. Background technique [0002] In recent years, with the construction of coastal nuclear power plants and thermal power plants, the temperature and drainage of power plants have been discharged into coastal waters, which has gradually highlighted the problem of marine thermal pollution. At present, the relatively mature environmental impact assessment methods for thermal (nuclear) power plant thermal drainage include field measurements, physical model tests and numerical simulation calculations. Numerical simulation method is...

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Problems solved by technology

[0003] As long as the generator set of the coastal power plant cooled by seawater does not stop running, the warm water discharge will continuously discharge a large amount of waste heat into the receiving water body, causing the local water temperature in the receiving water area to rise, the water quality to change, and the growth of aquatic organisms to be affected. If the situation continues to deteriorate, the structure and function of the aquatic ecosystem can be fundamentally and overall changed. At present, my country has not formulated clear regulations and acceptance criteria for temperature and drainage. my country's "Surface Water Environmental Quality Standard" (GB3838-2002) and " Sea Water Quality Standards (GB3097-1997) set limits on the temperature rise caused by warm water discharge. For the proposed coastal power plant cooled by sea water, how to accurately simulate and predict the impact range of the power plant to be built is very important. Important, in addition to the more accurate simulation of the hydrodynamic conditions in the sea area near the proposed power plant, the more reasonable selection of the temperature and drainage mathematical model and related parameters has a great impact on the calculation results of the temperature and drainage

At present, the value of the comprehensive heat dissipation coefficient of the water surface is mainly based on the empirical formulas and empirical parameters obtained by domestic and foreign scholars in the laboratory. It is difficult to verify whether the selected empirical formula and empirical parameters conform to the actual hydrometeorological relationship near the power plant. Whether the value of the comprehensive heat dissipation coefficient of the water surface that determines whether the calculation result of temperature and drainage is correct or not is reasonable and consistent with the proposed power plant However, the relevant research on whether the hydrometeorological conditions are suitable is very weak.

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