Shell-and-Tube Heat Exchanger (version 1.1)- is a user friendly program which for a given heat exchanger initial conditions and geometry predicts outlet temperatures of both shell-side and tube-side fluids, heat exchanged, pressure drop on the tube sides and fluid velocity in the inlet/outlet nozzles.
For a given input and output conditions the program can estimate preliminary heat exchanger design parameters.

Program assumes:

* heat exchange between counterflow fluids only
* shell insulation
* heat transfer with ambient air.
* shell-side fluid heating is possible
* evaporation and condensation are not considered
* results can be saved(into)/loaded(from) *.hec file