Automatic water heater systems
Patent
·
OSTI ID:6866113
A heat trap is described which can be connected to the flue exhaust outlet of an automatic gas water heating system in which heat can be entrapped that would otherwise be lost via hot flue gases passing up through the flue exhaust and out of a chimney. The heat trap comprises a tank containing therein vertically extending serpentine heat tubes. The lower ends of the heat tubes are connected to a common exhaust inlet which is directly fastened to the exhaust outlet of the automatic gas water heating system. The upper end of the heat tubes are connected to an exhaust outlet of the heat trap which is connected to the chimney. The heat trap also comprises a cold water inlet and a heated water outlet which connects to the cold water inlet of the automatic gas water heating system. The heat trap maintains a separate water supply in the heat trap tank to be delivered through the cold water inlet of the automatic gas water heating system as water is required to replenish water supply of the system.
- Assignee:
- NOV; NOV-87-055361; EDB-87-088809
- Patent Number(s):
- US 4653434
- OSTI ID:
- 6866113
- Country of Publication:
- United States
- Language:
- English
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