| 摘要 |
<p>The heating appts. where the heating fluid is heated in the circuit before the mould, passes through the double wall and is then returned to the heater, has in the circuit downstream of the mould a small flow-through vessel with pressure compensator for the hot liquid, pref. followed by a pump, then by a heater constituted by a heating pipe coil, through which the heating liquid flows, which is indirectly heated via a heat storage jacket. Specif., the heat storage sleeve may comprise a thick metal wall, e.g. copper, or an annulus surrounding the heating fluid pipe and contng. a heat storage material. Advantages includes reduction of the heating liquid quantity, avoidance of direct heating of the liquid with consequent possible damage and reduction in delay time.</p> |
