{
  "$type": "site.standard.document",
  "description": "In an ejector cycle system using carbon dioxide as refrigerant, an ejector (400) decompresses and expands refrigerant from a radiator (200) to suck gas refrigerant evaporated in an evaporator (300), and converts an expansion energy to a pressure energy to increase a refrigerant pressure to be…",
  "path": "/patents/1073209",
  "publishedAt": "2005-10-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F25B29/003",
    "DENSO CORP [JP]"
  ],
  "textContent": "In an ejector cycle system using carbon dioxide as refrigerant, an ejector (400) decompresses and expands refrigerant from a radiator (200) to suck gas refrigerant evaporated in an evaporator (300), and converts an expansion energy to a pressure energy to increase a refrigerant pressure to be sucked into a compressor (100). A control valve (731) is disposed in a refrigerant passage between the radiator (200) and the ejector (400) to control an opening degree of the refrigerant passage based on a heating degree of refrigerant at an outlet side of the evaporator (300). Because refrigerant is decompressed and expanded in a super-critical area, a pressure difference during the decompression operation becomes larger, and a specific enthalpy difference becomes larger. Accordingly, energy converting efficiency in the ejector becomes higher, and efficiency of the ejector cycle system is improved.",
  "title": "Ejector cycle system with critical refrigerant pressure"
}