Kierukkalämpönvaihdin

A kierukkalämpönvaihdin, also known as a spiral heat exchanger, is a type of heat exchanger where heat transfer occurs between two fluids flowing through concentric spiral channels. Typically, one fluid flows through the inner spiral and the other through the outer spiral, with the spiral walls acting as the heat transfer surface. This design maximizes the surface area for heat transfer within a compact volume.

The construction involves winding two flat or coiled plates around a central core to create two separate, helical flow paths. The fluids enter at opposite ends of the spiral and flow in a counter-current or co-current manner, depending on the specific application. Counter-current flow is often preferred as it generally leads to higher thermal efficiency.

Kierukkalämpönvaihdin are known for their ability to handle fluids with suspended solids or high viscosity because the single-path, self-cleaning nature of the spiral channels minimizes clogging. They are also effective at recovering heat from waste streams and are used in various industries, including chemical processing, food and beverage production, and wastewater treatment. Their compact size and efficient heat transfer make them a versatile solution for many heating and cooling applications.