Heat exchanger
AssigneeDenso Corporation
InventorsMasaaki Kawakubo, Etsuo Hasegawa, Ken Muto
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Abstract
In a high-pressure side heat exchanger for a vapor compression refrigerant cycle, a refrigerant passage is formed such that a flow area (S), a length (L), and an equivalent diameter (d) satisfy the conditional expression 0.04×e−1.8d≦S/L≦2.1×e−1.8d. The flow area (S) is obtained by dividing the product of a total cross-sectional area of the passages in one tube and the number of tubes by the path number. The length (L) is a flow distance of the refrigerant from the refrigerant inlet to the refrigerant outlet. That is, the length (L) is obtained by the product of the length of the tube and the path number. The diameter (d) is obtained by dividing the product of four and the cross-sectional area of the passage by a circumference of the passage.
Claims12
A heat exchanger for a vapor compression refrigerant cycle, defining a passage through which a refrigerant having a pressure equal to or higher than a predetermined pressure flows, wherein a refrigerant flow area (S), a length (L), and an equivalent diameter (d) of the passage satisfy the conditional expression 0.04×e−1.8d≦S/L≦2.1×e−1.8d.
A vapor compression refrigerant cycle comprising:
- a compressor for compressing a refrigerant;
- and
- a heat exchanger for cooling the refrigerant,
- wherein the heat exchanger includes tubes defining refrigerant passages through which the refrigerant flows therein and header tanks connected to longitudinal ends of the tubes,
- wherein the passages are defined such that a flow area (S), a length (L), and an equivalent diameter (d) satisfy the conditional expression 0.04×e−1.8d≦S/L≦2.1e−1.8d.
Dependencies are inferred from the claim text.