Waste heat recovery
AssigneeLinde Aktiengesellschaft
InventorsStephen Carney, Sebastian Ulmer, Rene' Quist
Life of this patent
Estimating the term…
Abstract
There is provided a method for pre-heating a fluid (140, 240, 340) by heat transfer from combustion gases (101) flowing through an exhaust duct (100) of a furnace, wherein the fluid (140, 240, 340) is supplied to a heat transfer device (120, 200, 300) which is in heat transfer contact with the combustion gases (101). At least a portion of the heat transfer device (120, 200, 300) is movably arranged relative to the exhaust duct (100) such that it can be moved into and out of the exhaust duct.
Claims14
1-12. (canceled)
In a method for pro-heating a fluid (140, 240, 340) by heat transfer from combustion gases (101) flowing through an exhaust duct (100) of a furnace, wherein the fluid (140, 240, 340) is supplied to a heat transfer device (120, 200, 300) in heat transfer contact with the combustion gases (101), the improvement comprising:
- the heat transfer device (120, 200, 300) comprising a double pipe (200) having an inner pipe (201, 301) and an outer pipe (202, 302);
- passing the fluid (240) first through the inner pipe (201) and subsequently through the outer pipe (202);
- and
- arranging at least a portion of the heat transfer device (120, 200, 300) relative to the exhaust duct (100) for moving that at least a portion of the heat transfer device into and out of the exhaust duct (100).
In a furnace having an exhaust duct (100) to exhaust combustion gases (101) from the furnace, and a heat transfer device (120, 200, 300) for pre-heating a fluid (140, 240, 340) by heat transfer from the combustion gases (101), the heat transfer device (120, 200, 300) including an inlet (204, 304) for the fluid (140, 240, 340) to be pre-heated and an outlet (206) for pre-heated fluid, the improvement comprising:
- the heat transfer device (200, 300) comprising at least one double pipe (200, 300), and at least a portion of the heat transfer device (120, 200, 300) is arranged relative to the exhaust duct (100) and movable for movement into and out of the exhaust duct (100).
Dependencies are inferred from the claim text.