Coaxial dual primary heat exchanger
This patent describes a heat exchange device for heating a fluid. It comprises a housing member having a shell portion, a fluid input aperture defined by a fluid input end of the shell portion, an output end cover plate sealably attached to the shell portion at an end opposite the fluid input end and with a burner assembly aperture defined therein, a fluid output portal radially directed and disposed at the output end; a coaxial heat exchange member having an outer shell portion, a truncated portion defining a combustion chamber therein with a combustion chamber input portal, a fluid flow directing member in spaced relationship with the coaxial heat exchange member, having an outer and an inner shell heat exchange member, having an outer and an inner shell in spaced relation the inner shell disposed within the first heat exchange region so as to define a first and a second heat exchange volume from the first heat exchange region, the first volume being the region defined by the arcuate surface and an output end of the inner shell of the fluid flow directing member.
- Assignee:
- NOV; NOV-92-011020; EDB-92-042479
- Patent Number(s):
- US 5022379; A
- Application Number:
- PPN: US 7-523064
- OSTI ID:
- 5763103
- Country of Publication:
- United States
- Language:
- English
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