Hot body near-surface gradient temperature field real-time visual experiment device and experiment method

Abstract

A hot body near-surface gradient temperature field real-time visual experiment device is characterized in that a transparent water tank is arranged on a base; a water storage pipe is arranged in the center positions of the front sidewall and the rear sidewall inside the water tank; a water injection pipe communicated with the water storage pipe is arranged on the top of the water storage pipe; a light screen is arranged on the base outside the rear side of the water tank, and a laser stand disposed on the central axis of the water storage pipe is arranged on the base outside the front side of the water tank; the laser stand is equipped with four semiconductor lasers which are disposed in the four vertex angle positions of a square symmetric around the central axis of the water storage pipe; and laser beams output by the four semiconductor lasers are transmitted through the front sidewall of the water tank, go along the outer wall of the water storage pipe, are transmitted through the rear sidewall of the water tank and are projected onto the light screen to form four light points in the four vertex angle positions of the square. The hot body near-surface gradient temperature field real-time visual experiment device has the advantages of simple structure, low cost, easy carrying, intuitive demonstration, good demonstration effect, and the like, and is applicable to demonstration experiment of heat transfer theory teaching.

Description

technical field [0001] The invention belongs to the technical field of heat transfer experiments, in particular to an experimental instrument or device for heat transfer in a gradient temperature field. Background technique [0002] Heat transfer is a science that studies the laws of heat transfer caused by temperature differences. Because there are temperature differences that promote heat transfer in nature and production technology, the theory of heat transfer is widely used in nature and various fields. The temperature difference is the driving force of heat transfer, and the size and direction of the temperature gradient determine the size and direction of the heat transfer speed. The research on the distribution of the gradient temperature field near the surface of a thermal body is mainly to determine the magnitude and direction of the gradient temperature field. The traditional method of dynamic display of the gradient temperature field distribution near the surface...

AI Technical Summary

Problems solved by technology

Real-time dynamic observation of the size and direction of the gradient temperature field cannot be realized; at the same time, the temperature gradient is often large near the surface of the hot body, that is, the temperature changes greatly within a very small distance, and limited by the size of the temperature sensing probe, the temperature Data collection is difficult or impossible

As one of the basic problems in the study of heat transfer, realizing the synchronous real-time dynamic display of the magnitude and direction of the gradient temperature field near the surface of a hot body is of great significance in the teaching of heat transfer, but no such experimental demonstration equipment has been seen so far.

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