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2014
|
Invention
|
Corrugated indirect water heater coil.
A corrugated indirect heating coil is disclosed. The heat... |
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2013
|
Invention
|
Heat exchanger. The invention generally relates to a heat exchanger. More particularly, the prese... |
|
|
Invention
|
Heat exchanger |
|
2011
|
Invention
|
Method and system for controlling efficiency of heating system.
A method and system is provided ... |
|
|
Invention
|
Method and system for controlling efficiency of heating system. A method and system is prov... |
|
2008
|
Invention
|
Bivalent water heating system.
A bivalent water-heating system includes a water-storage tank hav... |
