Shell-and-Tube Heat Exchanger - Half-Section 3D Model (Concept)

Concept 3D model of a single-pass shell-and-tube heat exchanger, shown as a half-section so the internals are visible. Modeled in FreeCAD with a parametric script, so shell diameter, tube pitch, baffle spacing and nozzle positions can be changed and regenerated quickly. What is modeled: shell (400 mm dia., 2,000 mm tube length), two tubesheets, a triangular-pitch tube bundle (25 mm tubes on 32 mm pitch), five segmental baffles with alternating cuts, two channels with 2:1 dished ends, four flanged nozzles (shell side and tube side) and two saddle supports. Files included: STEP and STL models plus isometric, front and top renders.