Method for replacing refrigerant in refrigeration apparatus, refrigerating machine oil, and container

A refrigerant replacement method for a refrigeration apparatus is intended to replace a first refrigerant charged into a refrigerant circuit of the refrigeration apparatus with a second refrigerant. The second refrigerant is used together with a refrigerating machine oil having a higher additive con...

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Bibliographische Detailangaben
Hauptverfasser:	Tanaka, Masaru, Takeuchi, Ryuuji, Yokoyama, Tomomi, Shimozono, Naoki
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING WEAPONS
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Beschreibung
Zusammenfassung:	A refrigerant replacement method for a refrigeration apparatus is intended to replace a first refrigerant charged into a refrigerant circuit of the refrigeration apparatus with a second refrigerant. The second refrigerant is used together with a refrigerating machine oil having a higher additive content by percentage than another refrigerating machine oil to be used together with the first refrigerant. The method includes: a refrigerant recovery step of recovering the first refrigerant from the refrigerant circuit; an oil charging step of additionally charging a refrigerating machine oil having a predetermined additive content by percentage into the refrigerant circuit; and a refrigerant charging step of charging the second refrigerant into the refrigerant circuit. The predetermined additive content by percentage is higher than the additive content by percentage of the refrigerating machine oil to be used together with the second refrigerant.