Blar i NTNU Open på forfatter "Widell, Kristina Marianne Norne"
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Energy efficient and climate friendly refrigeration systems onboard fishing vessels
Widell, Kristina Marianne Norne; Gabrielii, Cecilia H; Söylemez, Engin; Hazarika, Mihir Mouchum; Hafner, Armin; Khan, Muhammad Umar; Svendsen, Eirik Starheim; Nordtvedt, Tom Ståle; Tolstorebrov, Ignat; Pachai, Alexander C. (Chapter, 2023)Refrigeration systems onboard fishing vessels are necessary to keep the catch at a low temperature and to ensure long shelf life. Most refrigeration systems in the world fishing fleet still have R-22 as a working fluid, ... -
Integrated CO2 refrigeration and heat pump system for a dairy plant: Energy analysis and potential for cold thermal energy storage
Selvnes, Håkon; Jenssen, Sigmund; Sevault, Alexis Gerard Edouard; Bengsch, Jan; Widell, Kristina Marianne Norne; Ahrens, Marcel Ulrich; Ren, Shuai; Hafner, Armin (Chapter, 2023)Dairy processing is considered very energy-intensive due to significant thermal demands for both cooling and heating at different temperature levels. Conventional dairy plants have separate systems for supplying the various ... -
Integration of Cold Thermal Energy Storage at a Pelagic Fish Processing Plant: A Modelling Approach
Svendsen, Eirik Starheim; Bengsch, Jan; Widell, Kristina Marianne Norne; Selvnes, Håkon; Sevault, Alexis Gerard Edouard; Hafner, Armin; Nordtvedt, Tom Ståle (Chapter, 2023)Energy intensive sectors such as food processing are paying more and more attention towards energy conservation and reducing their total carbon footprint. The energy demand of a pelagic fish processing plant has been ... -
Investigation and analysis of a CO2 heat pump chiller with novel two-stage evaporator
Bengsch, Jan; Hazarika, Mihir Mouchum; Hafner, Armin; Widell, Kristina Marianne Norne (Chapter, 2023)This study was carried out to investigate the performance of a transcritical CO2 heat pump chiller that provides heating and cooling simultaneously. There are several applications where such CO2 systems are implemented, ... -
Numerical investigation of an ammonia-water absorption-compression high-temperature heat pump for hot water and steam production in food processing
Ren, Shuai; Ahrens, Marcel Ulrich; Hamid, Khalid; Tolstorebrov, Ignat; Hafner, Armin; Eikevik, Trygve Magne; Widell, Kristina Marianne Norne (Chapter, 2023)To achieve climate neutrality in the food sector, there is an urgent need for eco-friendly steam boilers. The absorption-compression heat pumps (ACHP) using an ammonia-water mixture as working fluid can provide a high heat ... -
Study on retaining natural refrigerant in seafood processing industries in India
Arun, B.S.; Kumar, Sumit; Murali, S.; Ninan, George; Samuel, Manoj P.; Widell, Kristina Marianne Norne; Singh, Simarpreet; Elarga, Hagar Hassan Hassanein Hassan; Hafner, Armin (Chapter, 2023)In the seafood processing sector in India, natural refrigerant such as NH3 is currently replaced by Freon refrigerants such as HFC-404A, because these systems are comparably more compact, operate above atmospheric pressure ... -
Sustainable production of fish protein hydrolysates: overall system architecture and footprint
Sherman, Prem Kumar; Tolstorebrov, Ignat; Widell, Kristina Marianne Norne; Hafner, Armin (Chapter, 2023)In this research work, the most efficient and energy-saving techniques for fish protein hydrolysates production were investigated from cradle-to-gate, in terms of overall cooling, heating, and energy demands. Advanced ...