Energy recovery method for plastic pipe manufacturing systems

Details Energy recovery method for plastic pipe manufacturing systems Energy recovery method for plastic pipe manufacturing systems

2009-04-17

2011-11-15

Denion, Thomas (Department: 3748)

Power plants

Motor operated by expansion and/or contraction of a unit of...

C060S517000, C425S096000, C264S239000

Reexamination Certificate

active

08056334

ABSTRACT:
An energy recovery system for a pipe manufacturing process is shown. A compression or injection molding operation is used to form a sealing gasket which is used in the subsequent pipe manufacturing operation. A Stirling engine cycle is used to recover heat during the gasket manufacture. The Stirling engine is driven by waste heat from the mold members or other associated parts of the injection or compression molding apparatus. The recovered waste heat is used to subsequently heat the female pipe end which is being belled in the pipe manufacturing process.

REFERENCES:
patent: 4455826 (1984-06-01), Knoos
patent: 4636085 (1987-01-01), Kopernicky
patent: 5718853 (1998-02-01), Ingram
patent: 6755640 (2004-06-01), Bauer et al.
patent: 7284372 (2007-10-01), Crow

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