| 摘要 |
<p>The heating system uses a circulation fluid with a high boiling point, e.g. oil, circulated via a pump (3) around a circulation loop (2) including a boiler (1) and a number of heating devices (4), with an expansion tank (6) sited above the level of the highest point in the circulation loop. The expansion tank (6) incorporates vessels (15, 18) for gasifying the circulation fluid with an inert gas such as nitrogen, with a parallel circulation loop (25) including a condenser (26) with a collection vessel (28) which can be periodically drained. Pref. the circulation fluid is gasified using several nitrogen bottles (15), while the parallel circulation loop (25) is at a higher level than an additional circulation loop (7) including a siphon (40), the gas space of the condenser (26) coupled to that of the main collection vessel (8) in the lower loop.</p> |
