Ideal (Carnot) COP and second-law efficiency

Code-Snippets

curl "https://api.oanor.com/heatpump-api/v1/carnot" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/heatpump-api/v1/carnot", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/heatpump-api/v1/carnot");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/heatpump-api/v1/carnot",
    headers={"x-oanor-key": "oanor_test_..."}
)

Beispiel-Response

Echte Antwort dieses Endpoints, erfasst beim letzten Health-Check.

{
    "data": {
        "note": "The Carnot COP is the unbeatable ceiling set only by the absolute temperatures: heating = Th ÷ (Th − Tc), cooling = Tc ÷ (Th − Tc), with T in kelvin (and heating COP always equals cooling COP + 1). The smaller the temperature lift, the higher the ceiling — which is why ground-source and low-temperature underfloor systems outperform air-source on a cold day.",
        "inputs": {
            "mode": "heating",
            "hot_temp_c": 20,
            "cold_temp_c": 0
        },
        "carnot_cop": 14.66,
        "carnot_cop_cooling": 13.66,
        "carnot_cop_heating": 14.66,
        "temperature_lift_c": 20
    },
    "meta": {
        "timestamp": "2026-06-06T23:53:55.554Z",
        "request_id": "399e0579-da6a-43dd-ab48-b96ac3e5aef7"
    },
    "status": "ok",
    "message": "Carnot COP",
    "success": true
}