Blar i SINTEF Open på forfatter "Eikevik, Trygve Magne"
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A steady and quasi-steady state analysis on the CO2 hybrid ground-coupled heat pumping system
Jin, Zhequan; Eikevik, Trygve Magne; Nekså, Petter; Hafner, Armin (Journal article; Peer reviewed, 2017)This article contains the steady and quasi-steady state analysis on a CO2 hybrid ground-coupled heat pumping system for warm climates. The hybrid system uses a combination of ambient air and ground boreholes as a heat sink ... -
Annual energy performance of R744 and R410A heat pumping systems
Jin, Zhequan; Eikevik, Trygve Magne; Nekså, Petter; Hafner, Armin; Wang, Ruzhu (Journal article; Peer reviewed, 2017)This work compares the annual energy performance of heat pumping systems using R744 and R410A as refrigerant. Focus is the annual energy efficiency of R744 hybrid ground-coupled heat pumping system. The hybrid system uses ... -
Description of atmoshperic freeze-drying process of organic apples using thermo-physical properties
Tolstorebrov, Ignat; Eikevik, Trygve Magne; Petrova, Inna; Shokina, Yulia; Bantle, Michael (Chapter, 2018)This study discusses the influence of temperature and total moisture content on ice fraction in organic apples during atmospheric freeze-drying process. The ice formation of glass transition events were described by Clausius- ... -
Description of atmospheric freeze-drying of brown seaweeds (Saccherina Latissima) with respect to thermal properties and phase transition
Tolstorebrov, Ignat; Eikevik, Trygve Magne; Petrova, Inna; Bantle, Michael (Chapter, 2018)Thermal properties of brown seaweeds (Saccharina latissima) were determined using DSC technique in the temperature range between -150.0 and 50.0 °C. The following phase transitions were detected: glass transitions, incipient ... -
The development of a hydrocarbon high temperature heat pump for waste heat recovery
Bamigbetan, Opeyemi Olayinka; Eikevik, Trygve Magne; Nekså, Petter; Bantle, Michael; Schlemminger, Christian (Peer reviewed; Journal article, 2019)Waste heat is an abundant resource that if recovered with a heat pump would increase energy efficiency in industrial processes. This will provide improvements in heat utilization and reduce the environmental impact of ... -
Development of the natural working fluid‐based refrigeration system for domestic scale freeze‐dryer
Piechnik, Edyta; Smolka, Jacek; Palacz, Michał; Tolstorebrov, Ignat; Bodys, Jakub; Ciesielska, Agnieszka; Haida, Michal; Halski, Michal; Stebel, Michal; Melka, Bartlomiej; Nowak, Andrzej J.; Eikevik, Trygve Magne; Allymehr, Ehsan; Bantle, Michael; Claussen, Ingrid Camilla; Hoinka, Krzysztof; Milejski, Adam (Science et technique du froid;, Chapter; Peer reviewed, 2022)In this work, the analysis of the refrigeration system designed for the FrostX 10 freeze‐dryer is presented. The main goal of this study was to experimentally investigate the reference R452a freeze‐dryer and prepare ... -
Experimental investigation of the performance of a hydrocarbon heat pump for high temperature industrial heating
Bamigbetan, Opeyemi Olayinka; Eikevik, Trygve Magne; Nekså, Petter; Bantle, Michael; Schlemminger, Christian (Science et technique du froid;2018-3, Chapter; Peer reviewed, 2018) -
Integrated high temperature heat pumps and thermal storage tanks for combined heating and cooling in the industry
Ahrens, Marcel Ulrich; Foslie, Sverre Stefanussen; Moen, Ole Marius; Bantle, Michael; Eikevik, Trygve Magne (Peer reviewed; Journal article, 2021)This study investigates the integrated heat pump system of a green-field dairy located in Bergen, Norway. The purpose of the study is to determine the energy consumption and system performance. The dairy features a novel ... -
Integration of heat pumps with natural working fluids into a neighborhood energy system
Rasalingham, Inthujan Raveendrakumar; Rohde, Daniel; Tolstorebrov, Ignat; Eikevik, Trygve Magne (Sciences et technique du froid;2020:14, Chapter; Peer reviewed, 2020)Combining heat pumps (HP) with other renewables, e.g. solar thermal collectors, photovoltaics and energy storage systems can contribute to the growth of future zero emission societies. This article investigates HP integration ... -
Investigation of influence of pre-treatment and low-temperature on drying kinetics, sorption properties, shrinkage and color of brown seaweeds (Saccharina Latissima)
Tolstorebrov, Ignat; Eikevik, Trygve Magne; Petrova, Inna; Shokina, Yulia; Bantle, Michael (Chapter, 2018)Drying kinetics of Saccharina latissima (raw and blanched) at low temperatures (10.0, 25.0 and 38.0 °C) was studied. The effective moisture diffusivity coefficient varied due to temperature alterations in the range between ... -
Low temperature drying and thermo-physical Properties of Brown seaweeds (Saccharina latissima)
Tolstorebrov, Ignat; Eikevik, Trygve Magne; Bantle, Michael (Chapter, 2017) -
Performance analysis of high temperature heat pumps and thermal energy storages for a dairy
Ahrens, Marcel Ulrich; Brækken, August; Foslie, Sverre Stefanussen; Moen, Ole Marius; Lovas, Kim Andre; Bantle, Michael; Hafner, Armin; Eikevik, Trygve Magne (Science et technique du froid;, Chapter; Peer reviewed, 2022)This paper analyses the performance of the integrated energy system of an existing dairy in Bergen, Norway. The investigated dairy has an innovative solution for the thermal process supply by using only heat pumps and ... -
Review of Vapour Compression Heat Pumps for High Temperature Heating using Natural Working Fluids
Bamigbetan, Opeyemi Olayinka; Eikevik, Trygve Magne; Nekså, Petter; Bantle, Michael (Journal article; Peer reviewed, 2017)The use of high temperature heat pumps (HTHPs) operating with natural fluids has been shown to be a potential environmentally friendly solution to increase energy efficiency in industrial processes. Industrial processes ... -
State diagrams in low temperature and atmospheric freeze drying of organic fruid products
Tolstorebrov, Ignat; Bantle, Michael; Eikevik, Trygve Magne; Paykacheva, K. (Chapter, 2017) -
The influence of long-term storage, temperature and type of packaging materials on the quality characteristics of frozen farmed Atlantic Salmon (Salmo Salar)
Indergård, Erlend; Tolstorebrov, Ignat; Larsen, Hanne; Eikevik, Trygve Magne (Journal article; Peer reviewed, 2014)The variations of biochemical, structural, sensory and microbiological characteristics of salmon were examined during the long-term frozen storage at –25 °C, –45 °C and –60 °C. The effects of four different types of packaging ... -
Theoretical analysis for charge reduction in a 200 kW hydrocarbon hight temperature heat pump
Bamigbetan, Opeyemi Olayinka; Eikevik, Trygve Magne; Nekså, Petter; Bantle, Michael; Schlemminger, Christian (Science et technique du froid;2018-3, Chapter; Peer reviewed, 2018)