{
  "$type": "site.standard.document",
  "description": "A method for defrosting an external heat exchanger, operated as an air heat pump evaporator, of a cooling system for a motor vehicle. The cooling system includes a refrigerant compressor connected to a primary and secondary section; an external heat exchanger; an evaporator; a heating register; a…",
  "path": "/patents/1340479",
  "publishedAt": "2023-03-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60H1/321",
    "AUDI AG"
  ],
  "textContent": "A method for defrosting an external heat exchanger, operated as an air heat pump evaporator, of a cooling system for a motor vehicle. The cooling system includes a refrigerant compressor connected to a primary and secondary section; an external heat exchanger; an evaporator; a heating register; a primary section valve which is closed in the air heat pump operation; and a secondary section valve which is open in the air heat pump operation. The method includes closing of the secondary section valve; opening of the primary section valve, so that refrigerant flows directly from the refrigerant compressor to the external heat exchanger; and setting an inlet-side pressure level of the refrigerant on the external heat exchanger to a target pressure which corresponds to a condensation temperature (Tkond) of the refrigerant in the range: 2° C. ≤ Tkond ≤ 20° C., in particular 4° C. ≤ Tkond ≤ 10° C.",
  "title": "METHOD FOR DEFROSTING AN EXTERNAL HEAT EXCHANGER, WHICH IS OPERATED AS AN AIR HEAT PUMP, OF A COOLING SYSTEM FOR A MOTOR VEHICLE, COOLING SYSTEM, AND MOTOR VEHICLE HAVING SUCH A COOLING SYSTEM"
}