| 摘要 |
PURPOSE: A heat exchanger by using a multitube system is provided to minimize the heat exchanger and an installation space by a forming heating tube in a closely positioned mutitube structure. CONSTITUTION: A heat exchanger by using a multitube system includes a main body(100) formed with an inlet tube(110) for introducing a fluid to be heated at a lower part and an outlet tube(120) for discharging a heated fluid at an upper part, distributing plates(200) mounted on the inlet tube with a predetermined interval and having a plurality of distributing passages(210) for uniformly maintaining a velocity of the fluid introduced via the inlet tube to be heated, a heating tube(300) positioned on the distributing plate for raising the fluid to be heated between an external tube(310) and an intermediate tube(320) and lowering the fluid in an inner tube(330), fluid tubes of high temperature (400) mounted at upper and lower parts of the intermediate tube for heating the heating tube by introducing a fluid of high temperature into the intermediate tube, circulation particles(500) for cleaning impurities formed on wall parts of the heating tube by circulating with the fluid to be heated in the heating tube, a stationary plate(600) formed at a lower part of the inner tube for continuous circulation of the circulation particles, and a nozzle(700) mounted at a lower part of the main body horizontally for separating the circulation particles when repairing the heat exchanger.
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