PHENICIE Core Birth Of 7 Days

Core Introduction

The core is the central functional component for a Heat Exchanger, often referred to as its "heart." It is responsible for the efficient transfer of heat from the source (such as engine coolant, hydraulic transmission oil, high-temperature compressed gas, etc.) to the cooling medium (typically air or water). The external structures of the radiator we usually see (such as the tank, fan shroud, mounting brackets, etc.) all exist to serve and support the core.

Core Structure and Composition

A typical radiator core mainly consists of the following two parts:

1. Inner Passages

   
   

   • Function: Acts as the "main pipe" and "distributor" of the entire core. It has two primary purposes:

     • Distribution and Collection: Evenly distributes the incoming hot fluid to all the cooling tubes and collects the cooled fluid from these tubes before sending it out of the core.

     • Structural Support: Serves as the two end faces of the core, providing structural integrity for the entire assembly.

       
       

2. External Passages

   
   

   • Function: Act as "amplifiers" that increase the heat dissipation surface area. They are densely arranged between the cooling tubes, with main functions including:

     • Increasing Surface Area: Significantly enlarges the contact surface area with the cooling air.

     • Disturbing Airflow: Their corrugated or louvered designs disrupt laminar airflow, creating turbulence, which enhances heat exchange efficiency.

     • Structural Support: Help secure the cooling tubes and enhance the mechanical strength of the core.

Working Principle:

High-temperature coolant enters the header through the inlet and is evenly distributed to flow slowly through all the cooling tubes. Simultaneously, cooling air—driven by a fan or by the vehicle's forward motion—passes through the gaps between the tubes and fins. Heat is transferred from the coolant through the tube walls and fins to the air, and is carried away by the airflow, thus achieving cooling.

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