Shell-and-Tube Heat Exchanger - Version 1.1 Shell-and-Tube Heat Exchanger - 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 fluidsshell insulationheat transfer with ambient air.shell side fluid heating is possibleevaporation and condensation are not considered