Solar system for heating water - consists of two separate transparent plastics bags containing water with heat exchanger between
GR890100539A
Insulating method
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Asymmetrical high-vacuum collector
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High-power radiation cooler
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SELF-REGULATING SOLAR SYSTEM
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Solar accumulator/collector
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Solar liquid evaporator
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Simple collector for heating service water
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Simple collector for heating service water
EP0029565A1
Flexible solar collector
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Tubular solar heat collector for air heating - contains permeable fabric light absorbing layer through which air flows
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Photovoltaic solar cell has reinforcing fibres - in plastics foil, to limit strain and consequent redn. of efficiency
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Air collector for solar heater - has transparent outer layers and radiation absorbing inner layers which may be laminated
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Absorber tube for solar heater - incorporates heat conducting ribs and is supported under plastics foil above parabolic reflector
EP0022940A2
Solar collector
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Solar collector which heats air esp. for crop drying - has controlled recycling to maintain uniform conditions
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Solar energy collector made from plastic foam - with outer layers of plastic film and thermal insulation
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Solar air heater made from flexible plastic sheets - has air duct connected to pump leading into double skin enclosure surrounded by insulating material(BR 13.1.81)
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Solar energy collector using air medium - is made from plastics film which encloses black metal heat absorbing plate
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Wind power meter with propeller-hysteresis braking - has interchangeable magnets and reversal material for different wind characteristics
