Xem Studiomeasured geometryThermoacoustic standing-wave engine, quarter-wave, finned hot head, 2 in tri-clamp
A propane-fired standing-wave thermoacoustic engine in 2 in tri-clamp: one-piece finned hot end, water-cooled cold exchanger, quarter-wave resonator open at the top.
Gas column 896 mm, closed hot end to the open top (λ/4) · 100 Hz at 427 °C (model, with the end correction and the hot cavity) · onset ≈ 209 °C · ≈ 0.31 W radiated from the open end at 3 kPa at the closed end
Exact dimensions. Every part is drawn at true size with no printing tolerance; each part's page lists its mating features and the fit each joint needs, so open those by your process's clearance before making the parts.
27 parts, every one a file here · all STL URLs · Markdown · tick lines as you go (saved in this browser)
| subsystem | object | parts | qty | note | |
|---|---|---|---|---|---|
| None | Thermoacoustic finned hot head | ta-finned-head-2in STEP · STL | 1 | closed hot end, one piece: no joint and no gasket in the flame | |
| None | Thermoacoustic bore spacers and liners f | ta-spacer-2in-60 STEP · STL | 1 | hot-cavity liner: from the closed end to the hot exchanger | |
| None | Thermoacoustic heat exchangers | heat-exchanger-hot-2in STEP · STL | 1 | ||
| None | Thermoacoustic stack for tri-clamp spool | stack-honeycomb-2in-40-c1.5 STEP · STL | 1 | ||
| None | Thermoacoustic heat exchangers | heat-exchanger-cold-2in STEP · STL | 1 | inside the water jacket | |
| None | Thermoacoustic bore spacers and liners f | ta-spacer-2in-8.4 STEP · STL | 1 | gasket lip to the cold exchanger | |
| None | Thermoacoustic water jacket | ta-jacket-half-2in-14 STEP · STL | 2 | water jacket over the cold exchanger, 9.35 below the head face | |
| None | Socket head cap screws | shcs-m4x25 STEP · STL | 2 | jacket ears | |
| None | Hex nuts | nut-m4 STEP · STL | 6 | jacket (2), hangers (4) | |
| None | Torch stand for a horizontal tri-clamp h | torch-stand-40 STEP · STL | 1 | under the head, 40 below the closed end; the heat source is a propane / butane torch head in the ring | |
| None | Set screws (grub screws) | set-m4x10 STEP · STL | 3 | centre the torch head in the ring | |
| None | Tri-clamp spool (two ferrules on a tube) | tc-spool-2in-18in STEP · STL | 1 | resonator, lower spool (both hangers on it) | |
| None | Tri-clamp spool (two ferrules on a tube) | tc-spool-2in-12in STEP · STL | 1 | resonator, upper spool, open at the top | |
| None | Tri-clamp gasket | tc-gasket-2in STEP · STL | 2 | Type B | |
| None | Tri-clamp clamp | clamp-half-2in STEP · STL | 4 | 2 joints, two halves each | |
| None | Socket head cap screws | shcs-m5x30 STEP · STL | 4 | two per clamp | |
| None | Hex nuts | nut-m5 STEP · STL | 4 | in the clamps' hex traps | |
| None | 2020 aluminum extrusion | 2020-200 STEP · STL | 2 | rails on the bench | |
| None | 2020 aluminum extrusion | 2020-400 STEP · STL | 2 | uprights; the hangers bolt to their faces | |
| None | L corner brackets for 20 | corner-bracket-20 STEP · STL | 4 | two per upright, front and back, onto its rail | |
| None | Button head socket screws | button-m5x10 STEP · STL | 8 | bracket screws, a washer each | |
| None | Flat washers | washer-m5 STEP · STL | 8 | ||
| None | Drop-in T-nuts for 20 | tnut-dropin-20-m5 STEP · STL | 12 | 8 per stand for the brackets, 2 per hanger | |
| None | Spool hanger collars | hanger-2in-tab STEP · STL | 2 | clamps a spool tube; its bar bolts to both uprights | |
| None | Spool hanger collars | hanger-2in-plain STEP · STL | 2 | the other half of each hanger | |
| None | Socket head cap screws | shcs-m5x16 STEP · STL | 4 | hanger bar into the uprights' T-nuts | |
| None | Socket head cap screws | shcs-m4x20 STEP · STL | 4 | close each hanger on its tube |
Assembled engine
A propane-fired standing-wave thermoacoustic engine in 2 in tri-clamp: a finned one-piece hot head over a torch stand, a water jacket on its cold end, and an 18 in and a 12 in spool open at the top, hung from a 2020 stand; about 99 × 243 × 984 mm.
Assembly STEP (14.8 MB) · STL (5.4 MB) · 84 parts
Build order
- Stand: rails, uprights, brackets; torch stand on the bench at the column axis, ring toward the back.
- Head closed end down: 60 liner, hot exchanger, stack, cold exchanger, 8.4 spacer to the lip, all from the face.
- Water jacket halves on the head 9.35 mm below the face, M4 × 25 each side.
- Type B gasket, 18 in spool, clamp; Type B gasket, 12 in spool, clamp; top open.
- Two hangers on the 18 in spool, bars to the uprights; torch head in the ring.
Agents: each row's object has /api/geometry?object=slug and the MCP tool get_free_files; the STL list above is every part.
JSON: /api/geometry?object=list-ta-standing-quarter-wave-2in