Importance

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Abstract

An improved heat exchanger (60) includes plural relatively flat conduits (62) adapted to accommodate passage of heat transfer fluid therethrough. Each conduit (62) has inlet and outlet openings, a supply channel (100) communicating with the corresponding inlet opening to direct heat transfer fluid flowing through the corresponding inlet opening into the corresponding conduit (62), a drain channel (102) communicating with the corresponding outlet opening to direct heat transfer fluid out of the corresponding conduit (62) through the corresponding outlet opening, and plural heat transfer channels (92) communicating between the supply and drain channels (100, 102) to direct heat transfer fluid therebetween in a generally transverse direction relative to respective major axes of the supply and drain channels (100, 102). The supply and drain channels (100, 102) each have a substantially greater length and cross-sectional area than the length and cross-sectional area of each heat transfer channel (92). Heat transfer between the fluid inside the conduit (62) and an external fluid, such as air, flowing through the heat exchanger (60) occurs for the most part as heat transfer fluid flows through the heat transfer channels (92) of the conduits (62).

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First Claim