The table gives a list of the types of concepts we have tested in the NTNU laboratories
|
System |
Comments |
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Baking oven on latent heat storage |
Based on Solar Salt as PCM (melting point at 220 deg C) |
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Heating elements on frying pan with fins into Solar Salt |
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Small scale PCM storage (one PV panel) for cooking beans |
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Small scale iron block heat storage for cooking beans |
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Oil and Solar Salt cylinders with heat pipe to 60 cm diameter frying pan |
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Natural circulation with cooker integrated with heat storage. Thermocline based |
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Similar principle as for 1, but with external cooker and different cooking power control |
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Three tank system for cooker with hot tank accumulating oil at 250 degrees during sunshine (PV) |
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Hot and cold oil separated with a piston in a pipe storage. Requires a pump |
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Water heater |
Evacuated tubes to give water at 90 degrees C |
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Air as heat transfer medium to rock bed and to cooker. Thermocline based. Requires a fan |
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Thermosyphon (vapour-liquid) circulation between focal point and frying pan with fins into PCM storage. |
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Natural circulation of oil from a trough to a heat storage with PCM cylinders attached to cooking plate |
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A double reflector arrangement to illuminate a stationary cooking plate with fins into PCM |
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Energy transfer from focal point to heat storage by a light guide |
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PHP briefly tested for horizontal heat transfer method between concentrator and heat storage |
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A 2m diameter parabolic dish heats a frying pan directly |
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Test with a standard parabolic dish for direct frying |
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Simplified CPC (Compound Parabolic Concentrator) collector tested with heat storage in focal area |
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Rock bed with side illumination (to be Scheffler reflector) gives natural circulation of drying air through the heat storage |
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An adsorption batch cycle for refrigeration |