| 摘要 |
<p>The system has a main heat exchanger (1) e.g. exhaust gas heat exchanger, for heating a fluid for a heating or processing water system. Return and/or supply lines (6, 9) of the fluid to be heated are connected to another heat exchanger (5) so that a temperature fall impresses the lines over the latter heat exchanger to circulate the fluid by a thermal siphon effect. The latter heat exchanger is connected to an outlet of a safety heat exchanger (11).</p> |
