Electrical installation generating power in isolated region - includes solar collector equipment with heat pump powered with travelling wave generator from wind power converter
DE4021367A1
Absorber for duct of solar collector - comprises flat chamber with ribbed channels to conduct heating fluid which exchanges heat with air
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Solar heating panel with several collecting elements - has flat absorber and rib absorber panels at right angles connected by pipes and flow and return pipes in base enclosed by polyurethane foam
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Solar energy collecting installation - comprises number of inclined collector channels with absorber backing units
DE3926967A1
DEVICE FOR FIXING AND SUPPORTING COLLECTOR ELEMENTS
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METHOD FOR CONVERTING SOLAR ENERGY INTO WARM AND DEVICE FOR IMPLEMENTING THE METHOD
DE2906486A1
Money box with automatic coin sorting - has balance arm beneath entry slot directing coins to required area
