| 摘要 |
A heat exchanger includes a casing (8), an inlet (9) and an outlet (5) for heated fluid. The casing (8) contains one flat tube (3), the two ends of which are connected with the inlet (9) and the outlet (5) for heated fluid respectively. A cavity (4) is formed betwween the tube (3) and the casing (8), the heat of a high temperature fluid flowing in the cavity (4) is transferred to the heated fluid flowing in the tube (3). Ribs have been affixed to the tube (3) between its outside walls to increase the heat exchanging area. The invention may be used as an exhaust heat recovery device of motor vehicle for heating of the passenger compartment.
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