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TP48200A-HX09A3, TP48200A-HX09A4, TBC300A-DCA3, TBC300A-DCA5, TBC300A-TCA2 Outdoor Power System User Manual

This document describes the DC power systems in terms of their features, configurations, components, and maintenance methods.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Heat Exchange

Heat Exchange

The equipment compartment of the power cabinet adopts heat exchanging to cool the equipment compartment, in which heat is exchanged through internal circulation and external circulation.

Internal circulation: hot air in the equipment compartment is drawn by the internal fan into the heat exchanger, passes through the heat exchanging core from top to bottom, then releases heat to change to cold air, and finally returns to the equipment compartment through the internal air exhaust vent under the heat exchanger.

External circulation: natural air outside the equipment compartment is drawn by the external fan into the heat exchanger via the equipment compartment, passes through the heat exchanging core from bottom to top, then absorbs heat to change to hot air, and finally flows out of the equipment compartment from the external air exhaust vent.

Figure 3-20 shows the heat exchange working principles.

Figure 3-20  Heat exchange working principles

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Updated: 2019-03-05

Document ID: EDOC1000036238

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