industrial pellet heater 3d model

Industrial hot-air generator powered by wood pellets, 300 kW indirect heating. Rectangular steel furnace with a refractory-lined combustion chamber on the left side, connected to a tubular heat exchanger in the middle made of stainless-steel tubes arranged in rows. Two rectangular reversal chambers above the tube bundle. A round metal chimney (250 mm diameter) positioned on the top right section. Main outer body insulated with metal panels. A pellet burner module attached to the front of the combustion chamber, with a rectangular orange casing and air inlet nozzle. On the right side, include a blue centrifugal process fan connected to an air-mixing plenum (air recirculation + fresh air), and a square hot-air duct (500 x 500 mm) going out to the side. Place bolts, seams, reinforcements and industrial metal textures. The machine should look heavy-duty, realistic, proportional, and designed for industrial powder-coating ovens.