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Device and method for detecting wind-cooling radiating system radiating performance

A heat dissipation system and heat dissipation performance technology, which is applied in the field of devices for testing the heat dissipation performance of air-cooled heat dissipation systems, can solve problems beyond the normal working range, and achieve the effects of improved maintainability, low cost, and high sensitivity

Inactive Publication Date: 2007-06-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
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Problems solved by technology

Therefore, when the fan fails or the air duct fails, the chip temperature of the board may have exceeded the normal working range before the board temperature detection value exceeds the detection threshold and an alarm is issued.

Method used

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  • Device and method for detecting wind-cooling radiating system radiating performance
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  • Device and method for detecting wind-cooling radiating system radiating performance

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Embodiment Construction

[0057] Below at first illustrate the noun meaning involved in the present invention:

[0058] Thermal resistance refers to the resistance encountered by heat on the heat flow path, reflecting the size of the heat transfer capacity of the medium or medium, indicating the temperature rise caused by 1W heat, the unit is ℃ / W or K / W, which can be divided into Conduction thermal resistance, convective thermal resistance, radiation thermal resistance. For forced air cooling systems, convective thermal resistance plays a major role.

[0059] Junction Remperature: Generally refers to the temperature of the active region. The active region may be a PN junction region inside a junction device package, a channel region of a field effect transistor, or a contact barrier region of a Schottky device, etc.

[0060] Ambient temperature (Environment Temperature): For the cabinet system, the temperature of the external environment or the air inlet is the ambient temperature; for the device on ...

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Abstract

The invention discloses a device and method for testing air cooling heat-removal system performance. It sets specimen in flue of air cooling heat-removal. By controlling the temperature difference between specimen and external temperature to determine thermal convection resistance of the system, the performance of the system would be judged according to the thermal convection resistance. It has the advantages of simple method, high sensitivity, low cost and real time detecting heat-removal situation, and improving the maintainability of communication device.

Description

technical field [0001] The invention relates to air-cooled heat dissipation technology, in particular to a device and method for detecting heat dissipation performance of an air-cooled heat dissipation system. Background technique [0002] With the improvement of the integration level of communication equipment, the power density of the cabinet (or box) where the communication equipment is installed is getting higher and higher. In order to ensure that the communication equipment works within a safe range, it is necessary to perform forced heat dissipation on the communication equipment, that is, in the communication equipment, air is used as the cooling medium for convective heat exchange. Since communication equipment usually has system resistance (system resistance includes pressure loss along the way caused by friction and local pressure loss caused by fluid velocity and direction changes, etc.), external force is required in communication equipment to conduct convective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20G01N25/18
Inventor 苏惠民
Owner HUAWEI TECH CO LTD
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