TP48200A-HT15D3 Telecom Power (Russia, Megafon)
User Manual
3 Components
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
35
Function
Working Principle
heat and returns to the external environment from the air exhaust vent of the external
heat sink. The air exchange between the internal and external environment is
implemented so far.
Heating
The TCUA controls the TEC04C to heat the internal circulation air. The internal
circulation fan draws the air inside the battery compartment into the internal heat sink.
The internal heat sink heats the air and then returns the heated air to the battery
compartment from the air exhaust vent. At the same time, the external circulation fan
draws the external circulation air into the external heat sink to accelerate the airflow. The
air gives out the heat and returns to the external environment from the air exhaust vent of
the external heat sink.
Figure 3-15
TEC airflow directions