Physical Transformation AtlasPTA
Pathway · p-da3558eaf6 · demonstrated

Bending-actuated NiTi elastocaloric air cooler

Mechanical stress or strainElastocaloric effectCooling

An actuator bends NiTi sheets through their transformation at two orders of magnitude less force than tension; the recorded driver is mechanical stress supplied by the actuator, which is why this pathway starts at the stress row and is not evidence that ambient vibration can drive the cooler.

Epistemic state of the route

known constituent relations
1 / 2 established or replicated · weakest constituent demonstrated
constituent maturity floor
K4 · experimentally observed
search for this exact route
A recorded pathway or a reviewed search records a demonstration of this composition.
recorded pathway
Bending-actuated NiTi elastocaloric air cooler · demonstrated
composition maturity
K6 · working transducer — Bending-actuated NiTi elastocaloric air cooler
recorded-pathway overlap
this route is the recorded pathway Bending-actuated NiTi elastocaloric air cooler
route-level evidence
1 source for the complete composition · 2 cited by the constituent steps
boundaries and interfaces
BOUNDARY compatible · no region transition

Explorematrix context · physics checks · performance · steps · route evidence · constituent evidence · cite

Matrix context

D = disequilibrium row · C = coupling family column. A cell reads the state of the atlas for that pair.

D.08 × C.09 · Mechanical stress or strain × Caloric (magneto/electro/elasto)family: Caloric (magneto/electro/elasto)

Measured or reported performance

  1. air temperature reduction5.5 Kdevice2022
    single-row bent NiTi sheets with an air duct, cooling cycle; 7.20 % maximum surface strain on the tension side at a specific driving force of 5.64 N g⁻¹
    refs [3]
  2. specific cooling power0.137 W g⁻¹device2022
    same single-row cooler
    refs [3]
  3. cooling power11.5 Wdevice2022
    multi-row NiTi sheets
    refs [3]

Steps

  1. 01
    Mechanical stress or strain —drives→ Elastocaloric effectreplicatedclaim record
    mechanical → thermal
    • stress large enough to drive the martensitic transformation of a shape-memory alloy
    solid
    refs [1] [2]
  2. 02
    Elastocaloric effect —converts into→ Coolingdemonstratedclaim record
    thermal → thermal · loss to thermal
    refs [1]

Evidence for the complete composition · 1

  1. [3]
    X. Li, S. Cheng, Q. Sun. A compact NiTi elastocaloric air cooler with low force bending actuation (2022)
    Applied Thermal Engineering 215, 118942 · doi:10.1016/j.applthermaleng.2022.118942 · record

Evidence for the constituent relations · 2

  1. [1]
    J. Tušek et al.. A regenerative elastocaloric heat pump (2016)
    Nature Energy 1, 16134 · doi:10.1038/nenergy.2016.134 · crossref ✓ 2026-09-19 · record
  2. [2]
    X. Moya, S. Kar-Narayan, N. D. Mathur. Caloric materials near ferroic phase transitions (2014)
    Nature Materials 13, 439–450 · doi:10.1038/nmat3951 · crossref ✓ 2026-09-19 · record

Cite this route

Physical Transformation Atlas (2026). route p-da3558eaf6: Bending-actuated NiTi elastocaloric air cooler. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/path/da3558eaf6

Ids and matrix addresses are stable across revisions; the revision hash identifies the exact canonical files the record was compiled from and is meta.data_hash in every /api export. Reuse terms: see the license field in any export.