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- Optical_overheating_protection abstract "With all solar thermal collector systems there is a potential risk that the solar collector may reach an equilibrium or stagnation temperature higher than the maximum safe operating temperature. Various measures are taken for optical overheating protection.Stagnation temperatures are encountered under conditions of high radiation while no heat transfer fluid is flowing through the collector, for example during power failures, component failures, servicing, energy storage capacity limitations, or periods when little hot water is extracted from the system. More generally, stagnation conditions can be considered to be any situation under which the solar collector cannot adequately dispatch the absorbed solar heat to the heat transfer fluid.Besides any damaging effects to the system, high stagnation temperatures also place constraints on collector materials. These materials must retain their important properties during and after exposure to the high stagnation temperatures. This implies that solar collectors are generally built from high temperature resistant materials. These materials are usually expensive, heavy, and have an overall high environmental impact.Polymeric materials offer a significant cost-reduction and environmental improvement potential for solar thermal collectors and may thus benefit a broader utilization of solar energy for various heating purposes. However, the long-term service temperature of plastics is limited. Thus, for potential applications of plastics in solar absorbers an appropriate design including overheating protection is essential. Feasible ways would be a reduction in optical gain (for example, using thermotropic layers, or electrochromic devices) or an increase in system losses, by dumping of the hot water excess.In this article an alternative method to decrease the optical gain is presented. The method is based on the geometry of prisms and the phenomenon of Total Internal Reflection.".
- Optical_overheating_protection thumbnail Prismatic_Optical_Switch.jpg?width=300.
- Optical_overheating_protection wikiPageExternalLink SolSwitch.php.
- Optical_overheating_protection wikiPageID "32798877".
- Optical_overheating_protection wikiPageLength "8841".
- Optical_overheating_protection wikiPageOutDegree "25".
- Optical_overheating_protection wikiPageRevisionID "655006405".
- Optical_overheating_protection wikiPageWikiLink CO2.
- Optical_overheating_protection wikiPageWikiLink Carbon_dioxide.
- Optical_overheating_protection wikiPageWikiLink Category:Articles_created_via_the_Article_Wizard.
- Optical_overheating_protection wikiPageWikiLink Category:Solar_power.
- Optical_overheating_protection wikiPageWikiLink Chalk.
- Optical_overheating_protection wikiPageWikiLink Critical_angle_(optics).
- Optical_overheating_protection wikiPageWikiLink Electrochromic.
- Optical_overheating_protection wikiPageWikiLink Electrochromism.
- Optical_overheating_protection wikiPageWikiLink Greenhouse.
- Optical_overheating_protection wikiPageWikiLink Infra_Red.
- Optical_overheating_protection wikiPageWikiLink Infrared.
- Optical_overheating_protection wikiPageWikiLink Light_pollution.
- Optical_overheating_protection wikiPageWikiLink Operating_temperature.
- Optical_overheating_protection wikiPageWikiLink Photosynthetically_active_radiation.
- Optical_overheating_protection wikiPageWikiLink Polycarbonate.
- Optical_overheating_protection wikiPageWikiLink Polymer.
- Optical_overheating_protection wikiPageWikiLink Polymeric.
- Optical_overheating_protection wikiPageWikiLink Refraction_index.
- Optical_overheating_protection wikiPageWikiLink Refractive_index.
- Optical_overheating_protection wikiPageWikiLink Relative_humidity.
- Optical_overheating_protection wikiPageWikiLink Safe_operating_temperature.
- Optical_overheating_protection wikiPageWikiLink Snells_law.
- Optical_overheating_protection wikiPageWikiLink Solar_spectrum.
- Optical_overheating_protection wikiPageWikiLink Solar_thermal_collector.
- Optical_overheating_protection wikiPageWikiLink Stagnation_temperature.
- Optical_overheating_protection wikiPageWikiLink Sunlight.
- Optical_overheating_protection wikiPageWikiLink Thermotropic.
- Optical_overheating_protection wikiPageWikiLink Thermotropic_crystal.
- Optical_overheating_protection wikiPageWikiLink Total_Internal_Reflection.
- Optical_overheating_protection wikiPageWikiLink Total_internal_reflection.
- Optical_overheating_protection wikiPageWikiLink Transmission_curve.
- Optical_overheating_protection wikiPageWikiLink File:Prismatic_Optical_Switch.jpg.
- Optical_overheating_protection wikiPageWikiLink File:Transmittance_Prismatic_Array.jpg.
- Optical_overheating_protection wikiPageWikiLinkText "Optical overheating protection".
- Optical_overheating_protection hasPhotoCollection Optical_overheating_protection.
- Optical_overheating_protection wikiPageUsesTemplate Template:Orphan.
- Optical_overheating_protection wikiPageUsesTemplate Template:Reflist.
- Optical_overheating_protection subject Category:Articles_created_via_the_Article_Wizard.
- Optical_overheating_protection subject Category:Solar_power.
- Optical_overheating_protection hypernym Risk.
- Optical_overheating_protection type Agent.
- Optical_overheating_protection comment "With all solar thermal collector systems there is a potential risk that the solar collector may reach an equilibrium or stagnation temperature higher than the maximum safe operating temperature.".
- Optical_overheating_protection label "Optical overheating protection".
- Optical_overheating_protection sameAs m.0h3pd4_.
- Optical_overheating_protection sameAs Q7098879.
- Optical_overheating_protection sameAs Q7098879.
- Optical_overheating_protection wasDerivedFrom Optical_overheating_protection?oldid=655006405.
- Optical_overheating_protection depiction Prismatic_Optical_Switch.jpg.
- Optical_overheating_protection isPrimaryTopicOf Optical_overheating_protection.