| http://www.w3.org/ns/prov#value | - BRIEF DESCRIPTION OF THE DRAWINGS [0012] Additional objects and advantages of the present invention will be more readily apparent from the following detailed description of preferred embodiments when taken together with the accompanying drawings, in which: [0013]FIG. 1 is a schematic diagram showing a heat-pump water heater with a super-critical refrigerant cycle according to a first embodiment of
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