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Thermoacoustic water jacket: 14 mm clamp-on halves for a 2 in tri-clamp tube

Name: Thermoacoustic water jacket: 14 mm clamp-on halves for a 2 in tri-clamp tube dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

How do I water-cool the ambient heat exchanger of a thermoacoustic engine on a 2 inch tri-clamp spool? · Hardware · basis: Bore = ASME BPE 2 in tube OD Ø50.8; length and start position from the exchanger positions in tools/gen_ta_family.py; ISO 273 medium clearance for M4

Long Earth Society build part. The short water jacket on my thermoacoustic cold exchangers. The engines

Exact dimensions. Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part. Mating features

sizes: 6 in table

Notes

A short jacket for the one place a thermoacoustic core must be held at room temperature: the tube wall over an ambient heat exchanger. It is 14 mm long so it covers the 10 mm exchanger and stops before the regenerator or stack; it starts 9.35 mm from the clamp face, 0.5 mm clear of the clamp.
Two identical halves close on the tube with one M4 × 25 and nut each side. Each half has its own closed water chamber (6 mm deep, 11 long) and two Ø6 hose spigots, in and out; run the two halves in series with a short hose, or in parallel.
The inner wall is the heat path: tube wall, jacket wall, water. What it is made of is the builder's choice; the file is the geometry.
Fits: bore clamps on the tube OD (the 1 mm split is the take-up); spigots are a press fit in 6 mm ID hose; ear holes are M4 clearance.

Sizes

feature	value
bore	Ø50.8 (tube OD)
length	14
outside	Ø68.8
chamber	6 deep × 11 long, per half
spigots	2 per half, Ø6 × 10, Ø4 bore
bolts	M4 × 25 + nut, one each side

Mating features

Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits as drawn.

feature	exact	mates with	fit	files
bore	Ø50.8	2 in tube OD	clamp	ta-jacket-half-*
split	1.0 total (0.5 per half)	the other half	clamp	ta-jacket-half-*
ear holes	Ø4.5	M4 clearance (ISO 273 medium)	designed	ta-jacket-half-*
hose spigots	Ø6 × 10, Ø4 bore	6 mm ID hose	press	ta-jacket-half-*
start from the clamp face	9.35	clamp reaches 8.83 from the face	designed	ta-jacket-half-*

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Long Earth Society

Engine builds

web, video

LES site

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

ta-jacket-half-2in-14

water-jacket half for the 2 in tube (Ø50.8) × 14: walls 1.5, chamber 6 deep, ends 1.5, split wall 1.5; ears x ±33–47 with Ø4.5 at ±41; two Ø6 × 10 spigots (Ø4 bore) at 60° and 120°

STEP · STL

Plain text: sheet.txt · JSON: /api/geometry?object=thermoacoustic-water-jacket

Thermoacoustic water jacket: 14 mm clamp-on halves for a 2 in tri-clamp tube, isometric render of a generated part — Render of ta-jacket-half-2in-14 from the free STEP; not to scale.

How it fits

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Questions

Why only 14 mm long?

The ambient exchanger is 10 mm; a longer jacket would also cool the regenerator or stack next to it and take away the temperature difference the engine runs on.

Can I use the 56 mm jacket instead?

Not on these cores: it would reach the hot exchanger. It suits the Stirling hot and cold spools.