| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve APF (Annual Performance Factor) of a heat pump device including a heat exchanger. <P>SOLUTION: This heat exchanger 1 includes a structure 11 with a main flow channel 2 in which a first fluid flows, and a pair of pipes 3, 4 which are disposed along the main flow channel 2, to allow a second fluid to flow. The pair of pipes 3, 4 respectively include meandering sections 31, 41 meandering at a predetermined pitch. The meandering sections 31, 41 are stacked to each other in the direction orthogonal to the direction to meander so that an apex of one of the meandering sections is positioned between the apexes of the other meandering section. The heat exchanger 1 satisfies the following formula: 3.6<A/D<SP POS="POST">2</SP><5.0 (5/18)λ≤S≤(4/9)λ, when a cross-sectional area of the main flow channel 2 is A, an outer diameter of each of the pair of pipes 3, 4 is D, the predetermined pitch isλ, and a shift amount of the apexes projecting in the same direction between the meandering sections 31, 41 is S. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
