To main content

Dynamic modelling of a refrigerated cabinet with integrated phase change material thermal storage

Dynamic modelling of a refrigerated cabinet with integrated phase change material thermal storage

Category
Part of a book/report
Abstract
Thermal storage can help to maintain constant temperature in a refrigerated cabinet during defrost cycles or power outage. This contributes to reduced loss in product quality and hence less food being wasted. Dynamic modelling was applied to study the benefits of integrating phase change material (PCM) thermal storage in a refrigerated cabinet. The PCM was integrated in a CO2 evaporator, coupled in series with a regular evaporator. This system was compared to a reference case with no PCM. The results show that the maximum cabinet temperature during defrost is reduced by up to 10 K when a PCM-enhanced evaporator is utilized. The goods temperature is constantly kept low, prolonging shelf life and product quality. The demand for refrigerant is reduced and furthermore, compressor capacity and evaporator size can be decreased due to reduced maximum cooling capacities, leading to overall lower energy use. During power outages, PCM-equipped systems still provide cooling for several hours.
Language
English
Affiliation
  • SINTEF Energy Research / Termisk energi
Year
2019
Published in
Actes du ... Congres international du froid
ISSN
1025-9031
Publisher
International Institute of Refrigeration
Book
Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019
Booklet
ICR 2019
ISBN
978-2-36215-035-7