| 摘要 |
A heating system comprising the combination of storage vessels (10, 12) for conventional heating oil and waste oil, respectively, and in which the two storage vessels (10, 12) are effectively sealed apart, one from the other. At the initial stage of heating, conventional heating oil generates temperature of a predetermined amount and the waste oil from vessel (12) is thereafter utilized after having been heated either from a feedback of heat (26, 28) developed by the conventional heating oil from vessel (10) or by a separate electrical resistor element (133), such heating making the waste oil effective as a heating medium. The flows from the two storage vessels (10, 12) containing the waste oil and conventional oil, are pressure controlled (64, 84) so that relief pressure feedback (70, 82) is provided in each distribution network (14, 30). The two distribution networks (14, 30) are effectively communicated to a heater box in a boiler (22) and controlled by valving means (60) which permits flow from only one of the oil storage sources, and effectively precludes any commingling of oil from the sources either at the burner nozzle (142) or in the storage vessels (10, 12).
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