Adjustable heat source test device for solar radiation and accumulated snow coupling experiment
A technology of solar radiation and test device, applied in measurement device, aerodynamic test, testing of machine/structural components, etc., can solve the problems of lack of standards, slow work progress, simulation, etc., to avoid accidents and increase reliability. degree, the effect of troubleshooting
Pending Publication Date: 2021-09-17
HARBIN INST OF TECH
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Problems solved by technology
Due to the limitation of climate and measurement conditions, the work progressed slowly and the basic data was very scarce.
Although numerical simulation costs less and has a short design cycle, it lacks the support of actual measurement and experimental data, and lacks a unified standard
At present, the wind tunnel test is the main method for Chinese and foreign scholars to study snow load, but the existing wind tunnel (traditional wind tunnel, French JV meteorological wind tunnel, Shinzhuang CES wind tunnel in Japan, Harbin Institute of Technology wind and snow joint test system, etc.) At that time, there were some problems in simulating the mechanism of snow on roofs, especially the simulation of the evolution of snow properties caused by solar radiation heat, and it was impossible to carry out 12-hour dynamic simulation of solar sunshine
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[0018] according to Figure 1 to Figure 2 As shown, the present invention provides an adjustable heat source test device for solar radiation and snow coupling experiments, the device includes: a heat source lifting simulation mechanism, a solar radiation simulation lamp field, a solar intensity calibration device and a solar intensity control system, The heat source lifting simulation mechanism adjusts the angle of the light field with reference to the different sunrise angles, and performs sunlight simulation from sunrise to sunset; the solar radiation simulation light field adjusts the light intensity and filters the grid according to different angles. The adjustment of the grid is to achieve the required control of the intensity of the heat source; the solar intensity is calibrated by the solar intensity calibration device, and the solar intensity is adjusted by controlling the solar intensity control system.
[0019] The heat source lifting simulation mechanism divides the...
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The invention relates to an adjustable heat source test device for a solar radiation and accumulated snow coupling experiment. The invention relates to the technical field of a novel multi-factor combined snowfall whole-process simulation test of a building model, wherein the device comprises a heat source lifting simulation mechanism, a solar radiation simulation lamp field, a solar intensity calibration device and a solar intensity control system; the angle adjustment of the lamp field is carried out according to the difference of reference sunrise angles of the heat source lifting simulation mechanism, and sunlight simulation from sunrise to sunset is carried out; the solar radiation simulation lamp field is used for adjusting the illumination intensity and the filtering grating according to different angles so as to meet the requirement for controlling the heat source intensity; and the solar intensity is calibrated through the solar intensity calibration device, and the solar intensity is adjusted by controlling the solar intensity control system.
Description
technical field [0001] The invention relates to the technical field of a novel multi-factor combined snowfall whole process simulation test of a building model, and is an adjustable heat source test device used for a coupling experiment of solar radiation and snow accumulation. Background technique [0002] Extreme low temperature ice and snow disasters occur frequently in the world, and snow accumulation causes building and structure collapse accidents to increase continuously, and the snow resistance form of building structures is very severe. Taking my country as an example, according to reports and statistics, in November 2015, heavy snow fell in the central part of my country, and snow-induced house collapse accidents occurred in many provinces, damaging more than 1,000 houses; in January 2018, two heavy snowfalls in the central Houses collapsed and more than 1,900 rooms were damaged. In countries such as Japan, the United States, Canada, and Norway, similar accidents o...
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Login to View More IPC IPC(8): G01N17/00G01M9/04
CPCG01N17/004G01N17/00G01M9/04
Inventor 范峰张清文莫华美张国龙李睿
Owner HARBIN INST OF TECH