Physical Transformation AtlasPTA
Pathway · p-3762928a7c · demonstrated

Regenerative elastocaloric heat pump

Mechanical stress or strainElastocaloric effectUseful heat

An active regenerator of superelastic NiTi plates, cycled through their stress-induced transformation, pumps heat across a 15.3 K water-side span with specific heating power up to 800 W per kilogram and COP up to 7 — the heat-pumping face of the elastocaloric effect, beside the bending-actuated 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
Regenerative elastocaloric heat pump · demonstrated
composition maturity
K7 · engineering prototype — Regenerative elastocaloric heat pump
recorded-pathway overlap
this route is the recorded pathway Regenerative elastocaloric heat pump
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. water-side temperature span15.3 Kdevice2016
    regenerative elastocaloric heat pump with NiTi plates cycled through the superelastic transformation; water-side span between the hot and cold outlets
    refs [1]
  2. specific heating powerup to 800 W kg⁻¹device2016
    the same device, per kilogram of elastocaloric material
    refs [1]
  3. coefficient of performance (heating)up to 7device2016
    maximum COP reported for the same device
    refs [1]

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→ Useful heatdemonstratedclaim record
    thermal → thermal · loss to thermal
    refs [1]

Evidence for the complete composition · 1

  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

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-3762928a7c: Regenerative elastocaloric heat pump. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/path/3762928a7c

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.