| 摘要 |
One embodiment of a furnace or heat collection device installed in or above the firebox of a residential fireplace, chimney, commercial smokestack, etc. The embodiment is typically made of metal or other highly heat conductive material, but other materials may also prove suitable. One manifestation of the embodiment is a hollow walled oblong tube. It is anticipated that the embodiment can take many other shapes including, circular, oval, square, rectangular, triangular, polygonal, etc., but other shapes may also prove suitable, in order to achieve maximum efficiency and safety and in order to fit a variety of fireplaces or chimneys or smokestack structures. The embodiment is seamlessly integrated with the primary heating or energy system of the premises.
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