Investigation of new refrigeration techniques and its materials
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Materialstudie: nya kyltekniker med tillhörande material (Swedish)
The global warming is one of the biggest challenges to overcome in the modern society. In 2010 was 500 million unites of refrigerator-freezers in use worldwide All of these systems contain hydrofluorocarbon gas, HFC-134a, as the refrigerating fluid, which is known to have impact on the global warming.
The aim of this project is to find new solutions to refrigerate enclosures, without the coolant and with a higher reliability than the cooling units used today. Two techniques, magnetocaloric and thermoelectric, have been investigated. Even though their function was discovered over a century ago, it is only some decades ago that these techniques ended up in the news again.
Cooling units that uses thermoelectric are already on the market, but the limitations of materials are restricting its potential to cool. Their cooling power is not nearly the vapor-compressor cooling that is used today. On the other hand is the magnetocaloric effect very promising, but the technique is today at a pre-industrial level. However, there is a lot of research within this field, both from the industries and institutions around the world. Hopefully a refrigerating system using the magnetocaloric technique is launched during 2014. This is an important indicator of the development in these systems, and will probably lead to a revolutionary new way of cooling.
Place, publisher, year, edition, pages
2014. , 76 p.
Material, magnetocaloric material, thermoelectric material, vapor-compressor technique, refrigerating technique
IdentifiersURN: urn:nbn:se:kth:diva-160918OAI: oai:DiVA.org:kth-160918DiVA: diva2:871960
Master of Science in Engineering - Materials Design and Engineering
2014-11-28, 16:00 (English)
Aune, Ragnhild Elizabeth