Lämpöpinnat

Lämpöpinnat, also known as heat pipes, are passive heat transfer devices that efficiently transfer heat from one point to another. They consist of a sealed tube containing a working fluid, typically a liquid with a low boiling point, such as water or ammonia. One end of the tube is heated, causing the working fluid to evaporate and create a vapor pressure. This vapor pressure drives the vapor to the cooler end of the tube, where it condenses back into a liquid, releasing the heat. The liquid then returns to the hot end via capillary action or gravity, completing the cycle.

Heat pipes are widely used in various applications due to their high thermal conductivity and efficiency. They are commonly found in electronics cooling, such as in heat sinks for CPUs and GPUs, to dissipate heat away from sensitive components. In the automotive industry, heat pipes are used in engine cooling systems and radiators to efficiently transfer heat from the engine to the coolant. In the aerospace industry, they are employed in thermal management systems for spacecraft and satellites. Additionally, heat pipes are used in refrigeration systems, solar thermal collectors, and even in some building insulation materials.

The design of heat pipes can vary, with different shapes, sizes, and working fluids depending on the specific application. Some heat pipes may have wicks or grooves to enhance capillary action, while others may use mechanical pumps to circulate the working fluid. The choice of working fluid depends on factors such as the required operating temperature range, compatibility with other materials, and safety considerations. Overall, heat pipes are a versatile and effective solution for heat transfer in various industries.