| 摘要 |
A heat exchanger is provided which may include a first heat exchange tube in a pipe shape, including a first fluid inlet, into which a first fluid may be introduced and flow, and a first fluid outlet, through which the first fluid may be discharged; a second heat exchange tube that passes through the first heat exchange tube, including a second fluid inlet, into which a second fluid may be introduced and flow, and a second fluid outlet, through which the second fluid may be discharged; and a third heat exchange tube that includes a third fluid inlet, into which the second fluid discharged through the second fluid outlet may be introduced and flow, and a third fluid outlet, through which the second fluid may be discharged, the third fluid outlet enclosing an external surface of the first heat exchange tube.
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