HEAT EXCHANGER AND REFRIGERATION CYCLE APPARATUS HAVING SAID HEAT EXCHANGER

Title:

HEAT EXCHANGER AND REFRIGERATION CYCLE APPARATUS HAVING SAID HEAT EXCHANGER

Document Type and Number:

WIPO Patent Application WO/2016/110997

Kind Code:

A1

Abstract:

Provided is a heat exchanger having a flat tube through which a mixed refrigerant of HFO1123, R32, and HFO1234yf flows as a heat medium. The flat tube has a plurality of flow passages through which the heat medium flows, and the cross-section of the flow passage is configured to have a rectangular shape which has short side sections facing each other, long side sections facing each other, and four arc-shaped corners which are formed by arc sections formed at the four corners at which the short side sections and long side sections cross each other, wherein the ratio r/d of the radius of the arc sections to the distance d between the long side sections is set such that 0.005 ≤ r/d ≤ 0.8.

Inventors:

ISHIBASHI AKIRA (JP)
HIGASHIIUE SHINYA (JP)
ITO DAISUKE (JP)
MATSUI SHIGEYOSHI (JP)
NAKAMURA SHIN (JP)
UGAJIN YUKI (JP)
NISHIYAMA TAKUMI (JP)
MOCHIZUKI ATSUSHI (JP)

Application Number:

PCT/JP2015/050464

Publication Date:

July 14, 2016

Filing Date:

January 09, 2015

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

F28F1/02; F25B1/00; F28F1/40

Domestic Patent References:

WO2014178353A1	2014-11-06
WO2002042706A1	2002-05-30

Foreign References:

JP2013011401A	2013-01-17
JP2010175158A	2010-08-12

Other References: