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  4. Design, construction and testing of a PCM-Evaporator-Composite for natural circulation cooling of aircraft systems
 
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Akronym
NAKULEK
Projekt Titel
Design, construction and testing of a PCM-Evaporator-Composite for natural circulation cooling of aircraft systems
Förderkennzeichen
20Q1519C
Funding code
945.02-613
Startdatum
July 1, 2016
Enddatum
June 30, 2020
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Funder
Bundesministerium für Wirtschaft und Klimaschutz (BMWK)  
Projektträger
Deutsches Zentrum für Luft- und Raumfahrt (DLR)  
Institut
Technische Thermodynamik M-21  
Projektleitung
Schmitz, Gerhard  
Mitarbeitende
Albertsen, Björn
Primary goals of the project NAKULEK (Natural Circulation Cooling for Power Electronics) are the realization of a stable two-phase natural circulation cooling system for power electronics in commercial aircrafts and the integration of a latent heat storage in such a system. Due to an increasing number and power density of electrical components the dissipated heat of the power electronics increases. As a result, conventional air cooling is no longer sufficient.
Active liquid cooling systems with pumps can lead to an increased system weight. One way to reduce weight is to use a thermosyphon, where the driving forces of natural circulation are based on density gradients, so no pump is required. This technology is supplemented by a latent heat storage (Phase Change Material) in the area of the evaporator to ensure operation at dynamic processes. Furthermore, the influence of a boiling crisis and various refrigerants are tested in this project.
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