Browsing NTNU Open by Author "Eikevik, Trygve Magne"
Now showing items 21-40 of 146
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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 ... -
Design and measurement of a CO2 refrigeration system with integrated propane subcooler at high air temperature operations
Bertelsen, Synne Kathinka; Haugsdal, Stine Børslid (Master thesis, 2015)After the rediscovery of CO2 as a prominent, environmentally benign working fluid, several technological modifications for the basic CO2 refrigeration cycle has been reviewed. These have been presented as solutions to the ... -
Design and simulation of a small cold storage with NH3 refrigeration system and CO2 as indirect cooling loop for storing of fresh fruits and vegetables
Bredesen, Tom André (Master thesis, 2019)Målet med denne Masteroppgaven er å studere indiske kuldekjeder for frukt og grønnsaker, for å foreslå hvordan disse kan forbedres med et lite kuldelager som benytter seg av et NH3 kjølesystem med CO2 i ei naturlig ... -
Design of an Integrated Energy System using a Cascade High Temperature Heat Pump with Zeotropic Refrigerants.
Volpato, Omar (Master thesis, 2023)I møte med en eskalerende global etterspørsel etter energi, tar denne avhandlingen for seg den sentrale utfordringen med å designe og modellere et selvstendig integrert energisystem. Ved kjernen utnytter systemet kraften ... -
Design of heat recovery system in an aluminium cast house: Design av varmegjenvinningssystem i et aluminium smelteverk
Albert, Daniel (Master thesis, 2012)In this diploma thesis, the possibilities to enhance the process production and energy efficiencyas well as the energy recovery potential of PFA 2 at Hydro-Sunndalsøra have been determined.To identify the potentials for ... -
Design og simulering av soldrevet adsorpsjonsbasert ismaskin
Vingelsgård, Erling (Master thesis, 2019)Matsvinn og kjølesystemer med miljøskadelige arbeidsfluider er noen av de største problemene verden står ovenfor med hensyn til global oppvarmning og populasjonsvekst. En tredel av produsert mat blir kastet, og et av ... -
Development of a simulation model for combined Air Drying and Heat Pump Assisted Drying System for Clip Fish
Pastor Calleja, Elena (Master thesis, 2016)Norway is a major exporter of cod in the world and therefore the cod industry is one of the most important in its economy. This is why an important part of the industry is focused on the treatment and drying of the fish, ... -
Development of a simulation tool for freezers with CO2 as working fluid
Saxvik, Olav Aarvaag (Master thesis, 2018)Fish is an important export product for Norway. It can be shipped fresh, frozen or dried. In this master, thesis the process of freezing salmon to a very low temperature, -40 degree C will be studied. The thesis has focused ... -
Development of Ammonia-Water Hybrid Absorption- Compression Heat Pumps
Ahrens, Marcel Ulrich; Hafner, Armin; Eikevik, Trygve Magne (Chapter, 2019)In this paper, investigations on the development of industrial high temperature heat pumps are carried out based on the analysis of the current available components. Ammonia-water hybrid heat pumps combine technologies of ... -
Development of an ammoniawater absorption-compression heat pump at high temperature operation
Ahrens, Marcel Ulrich (Doctoral theses at NTNU;2023:39, Doctoral thesis, 2022)Decarbonization of the industrial sector is one of the most important measures to tackling global warming. Energy demand and associated greenhouse gas (GHG) emissions are continuously increasing in various industrial ... -
Development of an energy efficient and environmentally friendly drum dryer using a heat pump with CO2 as working fluid
Knoph, Øyvind Lomeland (Master thesis, 2014)The drum dryer is a common appliance for drying clothes in households today. It is constantly developed in order to reduce its environmental impact and energy consumption. An industrial partner has initiated a research ... -
Development of an energy efficient and environmentally friendly drum dryer using a heat pump with CO2 as working fluid
Knoph, Øyvind Lomeland (Master thesis, 2014)The drum dryer is a common appliance for drying clothes in households today. It is constantly developed in order to reduce its environmental impact and energy consumption. An industrial partner has initiated a research ... -
Development of cold thermal energy storage for industrial refrigeration applications
Selvnes, Håkon (Doctoral theses at NTNU;2022:387, Doctoral thesis, 2022)Refrigeration technology is a vital part of modern society, covering multiple applications from comfort cooling and process cooling of servers in data centres, to domestic, commercial, and industrial refrigeration systems. ... -
Development of new heat pump cloth drum dryer with CO2 as working fluid
Elnan, Åsmund (Master thesis, 2011)Since early the early 20th century the electrical tumble dryer became an appliance to dry clothes. During many years of improvements different configurations to solve issues on decreased drying time and more energy efficient ... -
Development of the Hybrid Absorption Heat Pump Process at High Temperature Operation
Borgås, Anders (Master thesis, 2014)Hybrid heat pumps with ammonia/water mixtures are identified as one of the most promising high temperature heat pump technologies. They are especially suited for processes with high temperature lifts, flexible regarding ... -
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 (Chapter, 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 ... -
Efficient heat recovery from industrial processes using heat pump
Fava, Pierfrancesco (Master thesis, 2016)The main aim of this thesis is to show the possibilities that heat pumps hold within the industrial sectors in high-temperature applications, easing their inclusion within this field.The developed case of study is a highly ... -
Energiforsyningsløsninger forlavenergi yrkesbygg i Norge
Wall, Jostein (Master thesis, 2012)Stortinget legger grunnlaget for en opptrapping av arbeidet med å redusere klimagassutslippene i Norge med Klimameldingen og Klimaforliket, som fører til stadig strengere krav og økt fokus på energibruken til bygninger. I ... -
Energiproduksjon med kombinert bruk av solceller og varme/kjøle krets
Lund, Magnus Størdal (Master thesis, 2016)Denne masteroppgaven har vurdert potensialet i å kombinere elektrisk og termisk energiutvinning fra solenergi. Både kalde, norske klimaer og områder med høyere grad av solenergi har vært diskutert. En testrigg er konstruert, ...