Browsing NTNU Open by Author "Eikevik, Trygve Magne"
Now showing items 61-80 of 146
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Feasibility study for upgrading the current heat distribution network of an existing building complex to a Smart Thermal Grid
Clauss, John (Master thesis, 2015)A feasibility study on upgrading an existing heat distribution network to a low-temperature distribution grid has been carried out during this project. The integration of a solar thermal system combined with a borehole ... -
Ground Source Heat Pump in District Heating and Cooling System in Elverum - Grunnvannsbasert varmepumpe for fjernvarme og kjøling i Elverum
Stradiotto, Gian Maria (Master thesis, 2016)The project presented in this master thesis work was evaluated from September 2015 - January 2016 under the supervision of Professor Trygve Magne Eikevik , Department of Energy and Process Engineering at the Norwegian ... -
Grunnvannsbaserte varmepumper Tilrettelegging for bruk av grunnvann til oppvarming og kjøling i Melhus sentrum - sentralisert løsning
Andersen, Anja Beate Skogheim (Master thesis, 2017)I et grunnvannsbasert energisystem er det helt essensielt å benytte grunnvannet indirekte som varmekilde til varmepumper. Dette kommer som en følge av utfellinger av metallioner som danner et belegg på varmeveksleren. ... -
Grunnvannsvarmepumpe i fjernkjøle- og fjernvarmesystemer
Ophaug, Cathrine Hasz (Master thesis, 2021)Det er flere fordeler med en felles distribusjonskrets i Melhus. Det gjør den fornybare ressursen tilgjengelig for flere, ved at bygg på områder der det ikke er gunstig å bore brønner kan koble seg til fellesnettet. Denne ... -
Heat Pumping Systems for Chilling of Fish - Use of Impingement Freezer for Super Chilling
Landøy, Per Agnar Søvold (Master thesis, 2010)Superkjøling er en teknologi som åpenbart har klare fordeler. Det å kunne forlenge holdbarheten samtidig som en bevarer kvaliteten og i tillegg øke effektiviteten på produksjonen, vil gi en gevinst for både forbruker og ... -
High temperature heat pumps applying natural fluids
Brcic, Merisa (Master thesis, 2014)The heat pump market has so far mainly focused on residential heat pumps for space heating and domestic hot water production. That means that industrial heat pumps are successfully integrated as low temperature heat ... -
High temperature heat pumps in dairy industry utilizing turbo compressor
Rossvoll, Petter Olsen (Master thesis, 2016)Abstract There exist several high temperature processes in UHT plants where a great amount of heat is wasted. To avoid this can energy efficient equipment be installed, such as high temperature heat pumps, which can ... -
High Temperature Heat Pumps Using Zeotropic Refrigerant in Integrated Energy Systems
Skoglund, Sigurd (Master thesis, 2022)Et integrert energisystem som består av en høytemperatur varmepumpe, termisk energilager i bakken, et solcelle paneler, et batteri og et termisk energilager ble modellert i Matlab og undersøkt. Høytemperatur varmepumpen ... -
How particle size affects the melting of snow
Undheim, Harald (Master thesis, 2021)Noreg har lange tradisjonar for skigåing, og når vintrane blir varmare aukar behovet for ei påliteleg kjelde for snø. Byar nært kysten er spesielt utsett når det er små forandringar som skal til før temperaturen går frå ... -
Høytemperatur varmepumpe for redusert energibruk i næringsmiddelbedrift
Aarekol, Jakob (Master thesis, 2018)Industriens andel av det totale energiforbruk er betydeleg. I Europa er denne om lag 30%, og situasjonen er omtrent den same i Noreg. Næringsmiddelindustrien er ein betydeleg del-sektor i så måte, om ikkje den største. I ... -
Høytemperatur varmepumper for industrielle anvendelser
Glomlien, Gaute (Master thesis, 2013)Industrielle varmepumper er effektivt integrert i varmegjenvinningssystemer ved lav temperatur, men tas sjelden i bruk når varmebehovet i gjenvinningsprosessene overstiger 100°C. Dersom industrielle varmepumper kan utnyttes ... -
Identification of Existing Challenges and Future Trends for the Utilization of Ammonia-Water Absorption–Compression Heat Pumps at High Temperature Operation
Ahrens, Marcel Ulrich; Loth, Maximilian; Tolstorebrov, Ignat; Hafner, Armin; Kabelac, Stephan; Wang, Ruzhu; Eikevik, Trygve Magne (Peer reviewed; Journal article, 2021)Decarbonization of the industrial sector is one of the most important keys to reducing global warming. Energy demands and associated emissions in the industrial sector are continuously increasing. The utilization of high ... -
Improved Energy Efficiency with Solar Panels in Combinations with Cooling / Heating System
Jiang, Chengyang (Master thesis, 2017)Nowadays, with the unceasing human population growth and fast economic development, the global energy demand is also increasing unceasingly. Meanwhile, the increasing carbon dioxide emission has become a significant ... -
Industrial Drying of Raw Materials and By-products in Aluminium Production
Nilsen, Martin Andre Righetti (Master thesis, 2021)I denne masteroppgaven utforskes muligheten for å bruke spillvarme fra avgasser i aluminiumsproduksjonsprosessen med det formål å tørke biprodukter som oppstår og råmaterialer som inngår i denne prosessen. Innledningsvis ... -
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 (Chapter, 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 a hybrid compression absorption heat pump system for high temperatures
Wersland, Maria Byrkjedal (Master thesis, 2017)The industrial sector is a large consumer of high temperature heat. Usually this heat is provided by resources that consume primary energy. At the same time there is a vast amount of low-grade surplus heat available that ... -
Investigation of Hydrocarbon Two-phase Flow for Charge Reduced Heat Exchangers
Allymehr, Ehsan (Doctoral theses at NTNU;2021:397, Doctoral thesis, 2021)Hydrocarbons off er an alternative to the HVAC industry as a natural working fluid with minimal environmental impact. The main challenge with hydrocarbons utilization is flammability which can be mitigated by reduction of ... -
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 ... -
Investigation of integrated CO2 heat pumping systems for hotels in cold climates
Smitt, Silje Marie (Doctoral theses at NTNU;2021:391, Doctoral thesis, 2021)