Many sensitive heating processes run faster, more efficiently and somewhat more stable when infrared emitters with the new QRC reflector are used.
Infrared heat can be more effectively utilised by using reflectors. These save energy and valuable production space. A newly developed quartz reflector sits directly on the emitter and helps to ensure more efficient application of infrared radiation, both under vacuum and in high temperature processes. Copyright Heraeus Noblelight 2007
Comprehensive tests at Heraeus, and also on site at the first users, show that the temperature stability of the new reflector ensures a uniform process. The new QRC (quartz reflective coating) reflector consists of high purity synthetic quartz material, with which the quartz glass tube is coated.
Heraeus Noblelight is showing infrared emitters with the new integral reflector at the “22nd European Photovoltaic Solar Energy Conference and Exhibition” in Mailand at the beginning of September.
Solar cells aim to make optimum use of solar energy. An anti-reflective coating provides for a significantly better absorption performance for solar cells. This coating is carried out in vacuum and at high temperatures.
It has been shown that such high temperature processes can be carried out in a significantly more stable fashion using infrared emitters featuring the new QRC reflectors, as process parameters such as temperature or the heating time can be better maintained. This increases the energy efficiency of a system.
Unlike other quartz reflectors, the QRC reflector is not an externally applied quartz shell but is a coating of synthetic quartz glass applied directly to the infrared emitter. As a result, the emitter is very compact and requires very little working space. With the QRC reflector, Heraeus Noblelight has succeeded in creating, for the first time, a reflector for vacuum applications which sits directly on the emitter.
The synthetic quartz material is of high purity and has a reflectivity which is not quite as effective as a gold coating but is better than a stainless steel reflector. The quartz reflector has very good heat resistance up to around 1000ºC and is also resistant to acids, lyes and other aggressive substances. Consequently, emitters with this reflector can be used even in manufacturing processes where the manufacturing plant requires regular cleaning with corrosive cleaning agents.
Visitors to the Heraeus stand at the PV exhibition in Mailand could see an infrared emitter with the new reflector of opaque quartz glass in operation. A module specially built for the exhibition demonstrated how the reflector allows heat to be focused directly onto the product and gave some indication of how energy can be saved with the improved process.
Infrared emitters are compact and transfer large amounts of energy without the need of a contact medium. This makes thermal processes in vacuum possible and helps in the efficient use of valuable production space. In contrast to metal tube emitters, which conventionally have often been used under vacuum conditions, infrared emitters from Heraeus Noblelight have a higher power density and are significantly more responsive. As a result, heating operations are performed faster and in a more controlled fashion.Heraeus Noblelight GmbH, with its headquarters in Hanau and with subsidiaries in the USA, Great Britain, France, China, Australia and Puerto Rico, is one of the technology- and market-leaders in the production of specialist light sources. In 2006, Heraeus Noblelight had an annual turnover of 88 Million € and employed 651 people worldwide. The organisation develops, manufactures and markets infrared and ultraviolet emitters for applications in industrial manufacture, environmental protection, medicine and cosmetics, research, development and analytical laboratories.
Dr. Marie-Luise Bopp | Heraeus Noblelight GmbH
Laser sensor LAH-G1 - optical distance sensors with measurement value display
15.08.2017 | WayCon Positionsmesstechnik GmbH
Engineers find better way to detect nanoparticles
14.08.2017 | Washington University in St. Louis
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
Researchers from the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science, the Italian Space Agency (ASI), and the Instituto Geofisico--Escuela Politecnica Nacional (IGEPN) of Ecuador, showed an increasing volcanic danger on Cotopaxi in Ecuador using a powerful technique known as Interferometric Synthetic Aperture Radar (InSAR).
The Andes region in which Cotopaxi volcano is located is known to contain some of the world's most serious volcanic hazard. A mid- to large-size eruption has...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
16.08.2017 | Physics and Astronomy
16.08.2017 | Materials Sciences
16.08.2017 | Interdisciplinary Research