Forced-convection heat transfer experimental device for strong inner heat source containing porous medium passage

Abstract

The invention provides a forced-convention heat transfer experimental device for a strong inner heat source containing porous medium passage. The device mainly comprises a water storage tank, a cooler, a surge tank, a filter, a preheater, a pebble bed experimental section, a vapor-water separator, a condensing cooler, a water return tank, a cooling water tank and a cooling tower which are connected through pipelines, wherein an electromagnetic inductor is arranged outside the pebble bed experimental section; a circulating water pump is arranged between the cooler and the filter; a cooling water pump is arranged among the cooling water tank, the condensing cooler and the cooler; valves or measuring instruments are arranged on related positions of the pipelines; and the measuring instrumentis connected with a data collection system. By adopting proper technology and reasonable design, the device realize simultaneous heating on all metal balls in the porous medium passage to ensure thatthe passage becomes a strong inner heat source containing porous medium passage, so that the heating condition of the pebble bed water-cooled reactor passage can be truly simulated.

Description

technical field [0001] The invention relates to an experimental device, specifically a porous medium channel forced convection heat transfer experimental device, especially a porous medium channel forced convective heat transfer experimental device with a strong internal heat source. It belongs to the field of thermal hydraulic technology Background technique [0002] Worldwide energy shortages and increasingly significant greenhouse effect and environmental degradation have prompted people to explore the development of small and medium-sized reactors to meet the ever-increasing diversified energy and power demands while devoting themselves to the development of large-scale advanced reactors. Pebble bed water-cooled reactors It is one of the most striking heap types. It organically combines the most used and most mature water-cooled reactor technology in the world with the new spherical fuel element with excellent performance to develop a miniaturized, modularized and long-...

AI Technical Summary

Problems solved by technology

The main shortcomings of this type of experimental device are: the size of the experimental sphere is required to be relatively large, the power density is low, and it cannot be applied to the experimental simulation of fuel spheres with a millimeter scale. It is also difficult to heat a large number of experimental spheres at the same time, and there is a cold wall effect, so it cannot Meeting the needs of the development of pebble bed water-cooled reactors

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