Heat exchange pipes for a furnace system
This patent describes improvement in a flue products exhaust and preheated combustion air supply assembly for use in association with a heating furnace wherein an air intake pipe is provided outside of and around an exhaust product pipe and wherein each of the pipes extend horizontally to openings outside of a building. It comprises: an air intake pipe and exhaust products pipe having a downwardly inclined section and then an upwardly inclined section from a horizontal axis with a lowest point between the inclined sections and between the furnace and the openings outside of the building into which liquid condenses from the flue products and with a conduit means from the exhaust product pipe through the air intake pipe in a sealed relationship at the lowest point for removing the condensed liquid; and a drain means connected to the conduit means to empty the condensed liquid from the conduit means.
- Assignee:
- NOV; NOV-91-016021; EDB-91-094675
- Patent Number(s):
- US 4995375; A
- Application Number:
- PPN: US 7-502816
- OSTI ID:
- 5774392
- Resource Relation:
- Patent File Date: 2 Apr 1990
- Country of Publication:
- United States
- Language:
- English
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