Browsing NTNU Open by Author "Allouche, Yosr"
Now showing items 1-8 of 8
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A CFD analysis for the performance assessment of a novel design of plates-in-tank latent storage unit for freezing applications
Selvnes, Håkon; Allouche, Yosr; Sevault, Alexis; Hafner, Armin (Chapter, 2019)In this paper, the charging and discharging processes of a recently developed cold thermal energy storage (CTES) unit integrated into a poultry processing plant is investigated. A mathematical model of the CTES was created ... -
CFD modeling of ice formation and melting in horizontally cooled and heated plates
Selvnes, Håkon; Allouche, Yosr; Sevault, Alexis; Hafner, Armin (Chapter, 2019)This paper investigates the ice formation and melting processes in a novel CTES unit using the commercial CFD software ANSYS Fluent 19. The storage unit is designed to operate as a peak shaving device integrated into the ... -
A cold thermal energy storage unit for CO2 refrigeration using phase change material: First experimental results
Selvnes, Håkon; Allouche, Yosr; Hafner, Armin (Chapter, 2021)Refrigeration demands in industrial food processing plants can vary significantly over a week, depending on the production schedules. As a result, it is common to experience peaks of electricity consumption due to the ... -
A detailed review on CO2 two-phase ejector flow modeling
Ringstad, Knut Emil; Allouche, Yosr; Gullo, Paride; Ervik, Åsmund; Banasiak, Krzysztof; Hafner, Armin (Peer reviewed; Journal article, 2020)Ejector-equipped vapor-compression systems for refrigeration and cooling, relying solely on (R744) as a natural working fluid, are perceived to be an eco-friendly and highly efficient solution for many applications. However, ... -
A detailed review on CO2 two-phase ejector flow modeling
Ringstad, Knut Emil; Allouche, Yosr; Gullo, Paride; Ervik, Åsmund; Banasiak, Krzysztof; Hafner, Armin (Peer reviewed; Journal article, 2020)Ejector-equipped vapor-compression systems for refrigeration and cooling, relying solely on (R744) as a natural working fluid, are perceived to be an eco-friendly and highly efficient solution for many applications. However, ... -
Experimental and numerical investigation of a transcritical CO2 air/water reversible heat pump: analysis of domestic hot water production
Tosato, Giacomo; Artuso, Paolo; Minetto, Silvia; Rossetti, Antonio; Allouche, Yosr; Banasiak, Krzysztof (Chapter, 2020)As a natural refrigerant, carbon dioxide is safe, economic and environmentally sustainable and can be successfully utilized in heat pump and refrigeration systems operating according to transcritical cycles. This paper ... -
Experimental characterisation of a cold thermal energy storage unit with a pillow-plate heat exchanger design
Selvnes, Håkon; Allouche, Yosr; Hafner, Armin (Peer reviewed; Journal article, 2021)Cold Thermal Energy Storage (CTES) technology can be introduced to refrigeration systems for air conditioning and process cooling to reduce the peak power consumption by decoupling the supply and demand of refrigeration. ... -
Review on cold thermal energy storage applied to refrigeration systems using phase change materials
Selvnes, Håkon; Allouche, Yosr; Manescu, Raluca Iolanda; Hafner, Armin (Peer reviewed; Journal article, 2021)This paper presents a thorough review on the recent developments and latest research studies on cold thermal energy storage (CTES) using phase change materials (PCM) applied to refrigeration systems. The presented study ...