Electric resistance heating devices – Heating devices – Tank or container type liquid heater
Patent
1990-12-17
1992-05-19
Reynolds, Bruce A.
Electric resistance heating devices
Heating devices
Tank or container type liquid heater
126362, 137340, 137341, 165103, H05B 378, F24H 120
Patent
active
051154919
ABSTRACT:
A fluid tampering system for use with a standard water heater storage tank includes a heat exchanger which interposed between the outlet means for conveying heated fluid from the storage tank to a distribution system and the cold fluid inlet means, so that heat energy is transferred between heated fluid exiting and cold water entering the storage tank. Preferably, the heat exchange is complete and water exiting the heat exchanger in both the inlet and outlet conduits are of about equal temperature. In order to avoid the water exiting the water heater to the distribution system becoming too tepid, a bypass conduit either in the inlet means or in the outlet means may be provided triggered by a bypass valve located in the outlet conduit. As a safety feature, a safety shut-off valve is located in the outlet conduit before the distribution system to automatically shut-off the conduit where water exiting the system is above a desired maximum temperature. In this system, the water in the water storage tank may be kept at scalding temperature since it will be tempered on leaving the storage tank before entering the water distribution system to avoid scalding the user.
REFERENCES:
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Alfa-Laval Brazed Heat Exchanger Model CB25 (1989).
Bell James M.
McGugan Colin A.
Perlman Maier
Jeffery John A.
Reynolds Bruce A.
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