Daikin Industries, Ltd.

Kiyotaka Toyoyama

Hirokazu Fujino

Ken Satou

Tomohiro Nagano

Debukuma-ru Mondaru

Takuya Ukai

A heat exchanger includes: a water-repellent coating film on part of a surface of the heat exchanger. The surface on which the water-repellent coating film is disposed includes a surface structure including protrusions. D/L<0.36, D/L>0.4×(L/H), D<200, L−D<1000, H>700, 0>1.28×D×10+2.77 ×(L−D)×10−1.1×D×10−5.3×(L−D)×10−9.8×D×(L−D)×10−2.0, and 90°<θ<120°, where L is an average pitch of the protrusions in nm, D is an average diameter of the protrusions in nm, H is an average height of the protrusions in nm, and θ is a contact angle of water on a smooth plane of the water-repellent coating film.

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Osaka, Japan

Kiyotaka Toyoyama