Which two types of modern coils are used for heating and cooling in air handling systems?

In air handling systems, the two types of modern coils used for heating and cooling are the continuous-plate finned surface and the spiral-finned surface.

The continuous-plate finned surface consists of a series of fins attached to a base tube, which enhances the surface area for heat exchange. This design allows for efficient transfer of heat between the air and the fluid inside the tubes, whether that fluid is heated or cooled. Its configuration is particularly effective in maximizing thermal performance while maintaining a compact profile, making it popular in various HVAC applications.

The spiral-finned surface is another advanced design that integrates fins spiraled around the tubing. This configuration not only increases the surface area available for heat exchange but also promotes airflow dynamics that can enhance heat transfer efficiency. It is well-suited for applications where space is constrained, and higher performance is necessary.

Both of these coil designs leverage advanced thermal dynamics principles to achieve optimal heat transfer, making them ideal choices for modern air handling systems.