Browsing NTNU Open by Author "Nordtvedt, Tom Ståle"

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    • Application Of Refrigeration Technologies For Energy Efficient Production Of Fish Protein Hydrolysates 

      Sherman, Prem Kumar; Tolstorebrov, Ignat; Widell, Kristina Norne; Hafner, Armin; Nordtvedt, Tom Ståle (Chapter, 2022)
      Fish protein hydrolysate (FPH) is one of the most efficient and sustainable way to recover the valuable nutrients from fish remaining materials and has a widespread application. However, the production of FPH demands ...

    • Challenges of effective chilling of Atlantic salmon in refrigerated sea water: field tests 

      Tolstorebrov, Ignat; Widell, Kristina Norne; Nordtvedt, Tom Ståle; Eikevik, Trygve Magne (Chapter, 2019)
      This papers is summing up main challenges which occur at large-scale industrial slaughter houses when chilling Atlantic salmon by refrigerated sea water (RSW). The study includes strategies of efficient chilling in 100 m ...

    • Cryogenic cold utilization and system integration possibilities for LNG-driven fishing vessels 

      Saeed, Muhammad Zahid; Widell, Kristina Norne; Hafner, Armin; Nordtvedt, Tom Ståle; Svendsen, Eirik Starheim (Chapter, 2020)
      Liquified natural gas (LNG) fuelled vessels are increasing in the fishing industry due to its reduced environmental footprint as compared to vessels using heavy hydrocarbon fuels. Cryogenic tanks are used to store LNG on ...

    • Effects of drying on the nutrient content and physico-chemical and sensory characteristics of the edible kelp Saccharina latissima 

      Stévant, Pierrick Francois Denis; Indergård, Erlend; Ólafsdóttir, Aðalheiður; Marfaing, Hélène; Larssen, Wenche Merete Emblem; Fleurence, Joël; Roleda, Michael; Rustad, Turid; Slizyte, Rasa; Nordtvedt, Tom Ståle (Journal article; Peer reviewed, 2018)
      The effects of convective air-drying at 25, 40, and 70 °C and freeze-drying on the quality of the edible kelp Saccharina latissima to be used for food were investigated. Based on the analysis of the carbohydrate and amino ...

    • Energy flow analysis of an industrial ammonia refrigeration system and potential for a cold thermal energy storage 

      Widell, Kristina Norne; Svendsen, Eirik Starheim; Selvnes, Håkon; Sevault, Alexis; Hafner, Armin; Nordtvedt, Tom Ståle (Chapter, 2022)
      There is an increasing effort to reduce energy demand at food processing plants, mainly to reduce the total carbon footprint. The energy demand of a fish processing plant (using ammonia as refrigerant) has been evaluated ...

    • Experimental investigation of chilling tank for Atlantic salmon 

      Widell, Kristina Norne; Nordtvedt, Tom Ståle; Tolstorebrov, Ignat; Fossen, Inge (Chapter, 2018)
      Farmed salmon is a large export product from Norway. After the salmon is stunned and killed, it istransported to large tanks for bleeding, chilling and buffering before gutting and further processing. The temperature of ...

    • Integrated thermal storage and heat recovery of the CO2 refrigeration system for fishing vessels 

      Saeed, Muhammad Zahid; Widell, Kristina Norne; Hafner, Armin; Nordtvedt, Tom Ståle; Svendsen, Eirik Starheim (Chapter, 2020)
      The natural refrigerant CO2 is gaining an attraction for fishing vessels due to its compact units, negligible global warming potential (GWP), and non-toxic behaviour. Chilling and freezing onboard are energy-consuming ...

    • Modelling of Crystallization During Freeze-Concentration of Hydrolysates 

      Khan, Muhammad Umar; Tolstorebrov, Ignat; Widell, Kristina Norne; Hafner, Armin; Nordtvedt, Tom Ståle (Chapter, 2022)
      Dewatering of fish protein hydrolysates is energy intensive process. The freeze concentration is one of the solutions, which provide high quality of concentrate, energy efficiency and sustainability of the hydrolysate ...

    • Optimizing design and operation of chilling tank for Atlantic salmon 

      Widell, Kristina Norne; Nordtvedt, Tom Ståle; Tolstorebrov, Ignat; Fossen, Inge (Chapter, 2019)
      Farmed salmon is a large export product from Norway. After the salmon is stunned and killed, it is often transported to large tanks for bleeding, chilling and buffering before gutting and further processing. The temperature ...

    • Study of convective heat transfer and chilling kinetics of Atlantic salmon in refrigerated sea water: experiments and modelling 

      Tolstorebrov, Ignat; Eikevik, Trygve Magne; Widell, Kristina Norne; Nordtvedt, Tom Ståle (Chapter, 2019)
      The study is devoted to the investigation of heat transfer phenomena of Atlantic salmon in refrigerated sea water with the aim to clarify strategies of large scale industrial chilling of big-size fishes. Experiments were ...

    • Superchilling, ice fraction and quality 

      Stevik, Astrid; Haugen, Nils Erland L; Duun, Anne Sissel; Walnum, Harald Taxt; Nordtvedt, Tom Ståle (Chapter, 2010)
      The scope of the current experiments was to superchill a selection of fresh food by two superchilling methods followed by extensive storage studies and monitoring of quality during superchilled storage. Several methods for ...

    • Thermal Energy Storage with PCM for Refrigerated Sea Water System of Fishing Vessels 

      Saeed, Muhammad Zahid; Widell, Kristina Norne; Hafner, Armin; Svendsen, Eirik Starheim; Nordtvedt, Tom Ståle (Peer reviewed; Journal article, 2021)
      This paper investigates thermal storage integration with the refrigerated seawater (RSW) system of a fishing vessel. Four different scenarios were investigated, including ice in tanks, two design modifications in chilling ...