Carnot Efficiency Calculator implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-clean

Evidence ID

t2-036

Effect

Computation or source lookup only

Input and validation requirements

The specification exposes a division-by-zero input at Th=0 and a physically invalid reversed-temperature ordering that produces a negative raw efficiency. A robust calculator must reject both rather than display misleading numeric results.

Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "Th": 600,
    "Tc": 300,
    "temperature_unit": "K"
  },
  "expected_outputs": {
    "eta_ratio": 0.5,
    "eta_percent": 50,
    "max_work_per_unit_heat": 0.5
  },
  "working": "η=1−Tc/Th=1−300/600=1−0.5=0.5. η_percent=100×0.5=50%. For 1 unit of heat input, W_max/Q_in=0.5, so W_max=0.5 unit."
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche2/tranche2-results.json