To provide a heat transfer tube for heat radiation, superior in heat radiating performance and inner fin configuration workability, and using a carbon dioxide refrigerant, and to provide a radiator of high heat radiating performance, using the heat transfer tube.
In this heat transfer tube for heat radiation in which a carbon dioxide flows, a plurality of fins are spirally disposed on the inner face of the heat transfer tube for heat radiation, the height h of the fins is 0.15 mm or more, and a gap g between the adjacent fins is h×0.9 mm or more. Further the plurality of fins are spirally disposed on the inner face of the heat transfer tube for heat radiation, the height h of the fin is 0.20 mm or more, and the gap g between the fins adjacent to each other is 0.10 mm or more. The radiator heats water by heat exchange between the carbon dioxide of a high temperature flowing in the heat transfer tube for heat radiation, and the water of a low temperature, and supplies the heated water.
KITAMURA SHOJI
HIGO KOUJI
HASHIZUME TOSHIAKI
| JPH08105699A | 1996-04-23 | |||
| JP2005195192A | 2005-07-21 | |||
| JP2001091183A | 2001-04-06 | |||
| JP2006194476A | 2006-07-27 | |||
| JP2003343942A | 2003-12-03 | |||
| JP2005188789A | 2005-07-14 | |||
| JP2001033185A | 2001-02-09 |
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