Developments in the Field
Thermoacoustics News
Previous archive check: 23 October 2026. Sources for the newest addition and update were verified on 12 November 2026; verification dates for earlier news remain unchanged. Developments are selected from original sources, with evidence types identified. These are separate from project results.
Covers are original editorial illustrations of each topic, not publication figures or device photographs.
Review · 2 November 2026 (early access)
Review brings together thermoacoustic cooling designs and deployment challenges
Chalkapure and colleagues review standing-wave and travelling-wave cooling designs alongside stack, regenerator and acoustic-matching choices. They discuss solar and waste-heat applications, acoustic streaming, nonlinear losses and manufacturing challenges. Springer Nature released the peer-reviewed study in early access on 2 November 2026. Editorial changes to this version are still in progress.
Discover Applied Sciences · Springer Nature · Source verified: 12 November 2026
Theoretical/numerical study · cryogenics · 29 October 2026 (NIST publication record)
NIST examines miniaturization limits in 3 K pulse-tube refrigerators
Snodgrass and Ullom use thermoacoustic analysis to examine thermal-buffer-tube losses in low-frequency pulse-tube refrigerators. The work discusses miniaturization limits through Gedeon streaming and regenerator cooling capacity. NIST’s publication record is dated 29 October 2026; the theoretical and numerical assessment concerns work presented at Cryocoolers 24, held on 15–18 June 2026.
NIST · Cryocoolers 24 · Source verified: 2 November 2026
Institutional report · technical visit · October 2026
HeatInvest partners visit a thermoacoustic heat-pump demonstrator in Nantes
HeatInvest’s October visit report describes a technical programme hosted by EQUIUM on 7–8 October. Participants explored the company’s thermoacoustic heat-pump approach and visited a demonstrator integrated with an existing building-energy system. This is an institutional visit report, not a newly published independent COP measurement or evidence of broad commercial deployment.
HeatInvest
Numerical research · September 2026
Controlling acoustic gain with a temperature gradient
Sun and colleagues examined travelling-wave amplification using linear theory and CFD. Their results distinguish acoustic gain from energy-conversion efficiency. This is a numerical study rather than a newly demonstrated commercial device.
International Communications in Heat and Mass Transfer
Research from Türkiye · 31 August 2026
DeltaEC study of a refrigerator with a PLA stack
Duman and Acar simulated how stack position and cooling load affect performance. The online-first paper identifies prototype construction and experimental verification as further work.
Gazi Üniversitesi Fen Bilimleri Dergisi Part C
Field demonstration · 29 June 2026
Building-scale thermoacoustic heat-pump trial in Nantes
Atlanpole reported on Equium’s demonstrator inaugurated on 18 June. The installation serves a 56-home Nantes Métropole Habitat building and is intended for at least a year of field evaluation. This is a demonstration milestone rather than evidence of widespread commercial deployment.
Atlanpole · project ecosystem announcement
Related field: cryogenics · 10 March 2026
NIST examines where cryocoolers lose energy
Measurements on a commercial pulse-tube refrigerator were combined with thermoacoustic calculations to separate compression and transmission losses. The work concerns low-temperature refrigeration, rather than a demonstration of solar-powered cooling.
NIST · Physical Review Applied
Review · March 2026
Heat-driven thermoacoustic cooling in hot climates
Farikhah and Bahman review solar and waste-heat cooling alongside system design and scaling. Their institutional publication record highlights the continuing gap between model predictions and practical performance.
Kuwait University · International Journal of Refrigeration
Review · January 2026
A recent review of thermoacoustic heat exchangers
Arefin, Ramadan and Bailliet bring together heat-transfer correlations, geometry choices and modelling approaches for oscillatory flow. The review is a useful entry point for assessing exchanger design within the complete acoustic system.
Applied Thermal Engineering · 129093
Tools · Late 2025
Multi-platform support in DeltaEC 7.0.2
The developers’ revision history lists macOS and Linux distributions alongside Windows for version 7.0.2. This concerns access to a design tool, rather than performance validation of a thermoacoustic device.
DeltaEC 7.0.3 addresses calculation accuracy and model portability
Tool development · release notes · Late 2026 (day and month unspecified)
The developer page lists a Windows 7.0.3 download and release notes labelled late 2026. Changes address STKRECT accuracy for nearly square pores, conflicting guess variables, copy/paste behaviour and Mac–Windows model portability. The macOS and Linux downloads remain labelled 7.0.2. The multi-platform support announced in the previous 7.0.2 record should be read with this version distinction.
Update and source verification: 12 November 2026. The 7.0.2 news above is retained as an archive record.
Los Alamos Thermoacoustics · developer release notes