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Electric preheating heater suitable for wind tunnel

A heater and electric preheating technology, used in air heaters, fluid heaters, lighting and heating equipment, etc., can solve the problems of heater usage frequency and low efficiency

Active Publication Date: 2021-04-27
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem solved by this application is: the use frequency and efficiency of the heater in the wind tunnel in the prior art are relatively low

Method used

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  • Electric preheating heater suitable for wind tunnel
  • Electric preheating heater suitable for wind tunnel
  • Electric preheating heater suitable for wind tunnel

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Embodiment Construction

[0027] In the solutions provided by the embodiments of the present application, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0028] In order to better understand the above technical solutions, the technical solutions of the present application will be described in detail below through the accompanying drawings and specific examples. It should be understood that the embodiments of the present application and the specific features in the examples are detailed descriptions of the technical solutions of the present application, and It is not a limitation to the technical solutions of the present application, and the embodiments of the present application and the technical features in the embodiments can be comb...

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Abstract

The invention discloses an electric preheating heater suitable for a wind tunnel. The electric preheating heater comprises a heater body, a plurality of sets of heating parts, a power source, a preheating temperature control system, an air inlet and an air outlet, wherein the heater body comprises a cavity structure which is composed of a shell and a heat insulation layer and is hollow inside. Each heating part comprises a heat storage element and two heating elements. The multiple sets of heat storage elements are arranged in the cavity structure along the axis of the cavity structure, the two heating elements are inserted into the heat storage elements in the direction perpendicular to the axis of the cavity structure and penetrating through the shell and the heat insulation layer, the heating elements are used for heating to generate heat, and the heat storage elements are used for heating cold air in the cavity structure according to the heat generated by the heating elements. The power source is used for providing electric energy for the heating elements. The preheating temperature control system is connected with the power source and used for controlling the power source to supply power to the heating elements. According to the invention, the technical problems of low use frequency and low efficiency of the heater in the wind tunnel in the prior art are solved.

Description

technical field [0001] This application relates to the technical field of wind tunnel heating, in particular to an electric preheating heater suitable for wind tunnels. Background technique [0002] In the field of conventional hypersonic wind tunnels and supersonic wind tunnels that require heating, in order to prevent condensation during the high-speed expansion of gas or to achieve part of the temperature simulation requirements, the incoming flow must be heated. In the application of large-scale wind tunnels of the order of 0.5m, the airflow heating temperature requirement in this type of working condition test is generally 1000K, and the effective airflow heating power needs to reach 8000KW-50000KW. Generally, a single large-scale metal regenerative heating is used. Heater or multiple parallel heater layout. Generally, metal regenerative heaters include two types: combustion preheating metal regenerative heaters and electric preheating metal regenerative heaters. Elec...

Claims

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Application Information

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IPC IPC(8): F24H3/04F24H9/18F24H9/20
CPCF24H3/0405F24H9/1863F24H9/2071
Inventor 易欢赵旭飞李跃晏硕黄炳修石运军
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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