Program description

With the COIL program, you can design, optimize and simulate tube coil heat exchangers.

The exchangers may have a displacement cylinder to guide the flow around the coil or they may not have any internals. The coil pitch, the shell diameter and tube diameter are freely selectable. The coil may consist of a maximum of 5 parallel flown-through tubes. Shell-side flow is always forced flow. Flow direction might be cocurrent or countercurrent.

You can also set the program parameters so that the program will only calculate with standard tube and shell dimensions (default values). This enables the constructor to optimize times of delivery or to reduce costs for storage by limiting the assortment of goods.

Media must be single phase (liquid or gaseous) or condensing pure substances (pure substance condensation, isothermal condensation). The properties of the used media are provided by LV property modules and are determined for mean temperatures and pressures.

Condensation of multi-component mixtures is not possible with COIL.

This option allows the complete thermal and hydraulic design of a coiled double-pipe heat exchanger according to VDI Heat ATLAS.

Media are single-phase (liquid or gaseous) or condensing pure substances. The physical properties of the used media are provided by LV property modules and calculated for mean temperatures and pressures.

Flow direction might be cocurrent or countercurrent.

Fundamentals

The calculations are based on the regulations of the VDI Heat Atlas

· Chapter  G3:          Heat transfer in flow through coils.

· Chapter L1.2:        Pressure drop in flow through coils.