|
|
|
|
|
Theoretical background information and the design of grid coils will now be put together to illustrate how to achieve the desired heat-transfer properties for an in-tank tubular heat exchanger. The manifolds on grid coils are baffled internally to achieve serpentine flow of the heating liquid through the exchanger. The location of these baffles varies on many grid coils. They are placed strategically to match the liquid flow to the appropriate tubular cross-sectional area. Remember the Reynolds Number, which is, among other things, a function of liquid flow and cross sectional area. Also remember the importance of turbulent flow. Here, the theoretical knowledge can be applied to practical applications. By strategically placing baffles inside manifolds, each coil ensures turbulent flow inside the heat transfer tubes. Baffles can be placed to achieve single, double, triple or more tube flow, a function of the amount of heating liquid available in individual applications. This ensures turbulent flow and maximum heat transfer. No pre-designed in-tank heat exchanger can provide this kind of flexibility.
| ||||
|
