A radiator is a heat exchanger used to transfer thermal energy between two mediums for cooling and heating purposes. Here are some key points:
Function: Radiators are commonly found in cars, buildings, and electronics. They transfer heat from one medium (usually a liquid) to another (often air or liquid) to regulate temperature.
Mechanism: Heat transfer occurs through convection (air or liquid flow) and thermal radiation. Conduction is not a major factor in radiators.
Design: Radiators have exposed pipes (often with fins) to increase surface area. Air in contact with the fins carries off heat. If fins are obstructed, heat transfer is less effective.
Applications:
Building Heating: Radiators circulate hot water or steam in central heating systems to warm buildings.
Cooling Towers: Radiators cool liquid-cooled chillers in HVAC systems.
Car Engines: Auto radiators cool engine coolant by directing airflow through tubes and fins.