Heat exchanging tube and heat exchanger

A heat exchanging tube is provided with a flat tube main body having a predetermined length and a plurality of refrigerant passages extending in a tube longitudinal direction and arranged in a tube widthwise direction. The following relational equations (a) to (c) are satisfied: W=6 to 18 mm . . . (...

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Bibliographic Details
Main Author KOICHIRO TAKE
Format Patent
LanguageEnglish
Published 07.08.2008
Subjects
BLASTING
DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION
HEAT EXCHANGE IN GENERAL
HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
HEATING
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:A heat exchanging tube is provided with a flat tube main body having a predetermined length and a plurality of refrigerant passages extending in a tube longitudinal direction and arranged in a tube widthwise direction. The following relational equations (a) to (c) are satisfied: W=6 to 18 mm . . . (a); Ac/Atx100=50 to 70% . . . (b) and P/Lx100=350 to 450% . . . (c), where "W" is a width of the tube main body, "Ac" is a total cross-sectional area of the refrigerant passages, "At" is a total cross-sectional area of the tube main body (including the refrigerant passages), "L" is an external perimeter of the tube main body and "P" is a total inner perimeter of the refrigerant passages. With this tube, enough pressure strength can be obtained and the passage resistance can be decreased while keeping the light weight, and further the heat exchanging performance can be improved.
Bibliography:Application Number: AU20030272090