Blar i NTNU Open på forfatter "Schlemminger, Christian"
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Adsorptive Hydrogen Storage: Experimental investigations on thermal conductivity in porous media
Henriksen, Jan Georg (Master thesis, 2013)The objective of this work was to install and verify the Hot Disk TPS measurement setup for thermal conductivity measurements, and to carry out experiments on various porous materials. A literature survey on gas/solid ... -
Cold thermal energy storage for industrial CO refrigeration systems using phase change material: An experimental study
Selvnes, Håkon; Allouche, Yosr; Hafner, Armin; Schlemminger, Christian; Tolstorebrov, Ignat (Journal article, 2022)Refrigeration systems in industrial food processing plants are large users of electric energy and often show high peak power consumption. Cold thermal energy storage (CTES) technology integrated into refrigeration systems ... -
Cryogenic hydrogen adsorption storage: An investigation of thermo-physical properties and storage tank performance
Schlemminger, Christian (Doctoral thesis at NTNU;2016:85, Doctoral thesis, 2016) -
Design and Evaluation of CO2 based integrated heating and cooling systems for zero emission cruise ships
Schaan, Larissa (Master thesis, 2021)Fremtidige kjølesystemer for cruiseskip er underlagt stadig strengere begrensninger på kjølemidler og bør også bidra til å øke skipets samlede energieffektivitet. På denne bakgrunn handler den nåværende vitnemålet om ... -
Development of a thermal conductivity apparatus: Analysis and design
Eithun, Camilla Foyn (Master thesis, 2012)This objective of this thesis has been to development and analysis a measurement apparatus designed to determine thermal conductivity of porous materials. A literature survey concerning available experimental techniques ... -
Empirical validation and local sensitivity analysis of a lumped-parameter thermal model of an outdoor test cell
Cattarin, Giulio; Pagliano, Lorenzo; Causone, Francesco; Kindinis, Andrea; Goia, Francesco; Carlucci, Salvatore; Schlemminger, Christian (Journal article, 2018)This paper presents the experimental validation of a thermal model describing the ZEB Test Cells Laboratory, located at the Gløshaugen campus of NTNU and SINTEF in Trondheim, Norway. Besides, a local sensitivity analysis ... -
Energieffektiv hydrogenlagring: eksergianalyse av adsorpsjon
Berntsen, Trond Einar Egeberg (Master thesis, 2012)Hydrogenlagring er en nøkkelteknologi for etablering av en hydrogenøkonomi. Adsorpsjon er en av hydrogenlagringsteknologiene som for tiden utforskes sammen med hydrogen lagret som komprimert gass, væske, og i metallhydrider. ... -
Experimental evaluation of a water based high temperature heat pump with novel high pressure lift turbo compressors
Verpe, Espen Halvorsen; Schlemminger, Christian; Bantle, Michael; Ahrens, Marcel Ulrich (Chapter, 2020)This paper evaluates a water based (R718) high temperature heat pump with novel high-pressure lift turbo compressors. The first stage turbo compressor is designed for steam compression and the second stage is designed for ... -
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 (Chapter, 2018)A 20 kW heat pump test rig has been built to investigate and validate heat delivery up to 110 °C using a vapour compression cycle. The heat pump is a cascade cycle with propane as the working fluid in the low temperature ... -
Field data of CO2 integrated refrigeration, heating and cooling systems for supermarkets
Tosato, Giacomo; Minetto, Silvia; Rossetti, Antonio; Hafner, Armin; Schlemminger, Christian; Girotto, Sergio (Chapter, 2020)The EU H2020 project MultiPACK has given the opportunity of installing three state-of-the art CO2 systems for supermarkets in South Europe, able to supply all the required thermal energy needs of the site, i.e. refrigeration, ... -
High temperature industrial heat pumps utilising natural working fluids
Nekså, Petter; Bantle, Michael; Schlemminger, Christian; Bamigbetan, Opeyemi Olayinka (Chapter, 2019)There is a large demand for heat typically in the temperature range 100-200⁰C in different industries. This is today often covered by fossil fuel burning or direct use of electricity. Heat pumps has to a lesser extent been ... -
Höchtemperatur-Wärmepumpen mit natürlichen Kältemitteln : Fallstudien zur HTWP-Integration für industrielle Kälte- und Prozessheisswasserherstellung
Schlemminger, Christian; Ahrens, Marcel Ulrich; Foslie, Sverre Stefanussen; Moen, Ole Marius; Bantle, Michael; Hafner, Armin; Jenssen, Sigmund (Chapter, 2021)Thermische Prozesse in der Nahrungsmittelindustrie, wie z. B. Molkereien sind oftmals eine Kombination aus Erwärmung und Abkühlung eines Produktes. Prozesskühlung wird dabei meistens mittels einer Wärmepumpe erzielt, wobei ... -
Industrial High Temperature Heat Pump with natural Refrigerants - Performance evaluation and design improvement
Trumpf, Hannes (Master thesis, 2022)Abstract will be available on 2025-09-01 -
Integration of R744 and R290 Heat Pumps for Two-family Houses
Plassen, Henrik (Master thesis, 2022)Forbruk av varmt tappevann og romoppvarming er store energiposter, og st˚ar for det meste av energien som leveres til boliger i kalde klima. Varmepumpesystemer utnytter energi i omgivelsene for ˚a redusere bruk av elektrisk ... -
Kennfeld und Leistungsanalyse einer zweistufigen Turbokompressor-Brüdenverdichtung
Bantle, Michael; Schlemminger, Christian; Ahrens, Marcel Ulrich; Evenmo, Kjetil (Chapter, 2018)Die mechanische Brüdenverdichtung ist eine Spezialform der Wärmepumpentechnologie. Überschüssiger Dampf aus industriellen Prozessen (R718) wird verdichtet und die Kondensationswärme genutzt um den Prozess zu hei-zen. ... -
Modeling of a CO2‐Based Integrated Refrigeration System for Supermarkets
Pardiñas, Ángel Á.; Jokiel, Michael; Schlemminger, Christian; Selvnes, Håkon; Hafner, Armin (Peer reviewed; Journal article, 2021)An integrated energy system that consists of a centralized refrigeration unit can deliver the entire HVAC&R (heating, ventilation, air conditioning, and refrigeration) demand for a supermarket. CO2 (R744) is a natural ... -
Numerical study of hydrogen adsorption
Rasmussen, Inger-Anne (Master thesis, 2012)The main objective of this thesis is to describe the transient thermodynamics during physisorption of hydrogen gas using a commercial numerical software.Simulations of thermal effects during adsorption are valuable tools ... -
The Performance Analysis of an Integrated CO2 Refrigeration System with Multi-Ejectors Installed in a Supermarket
Söylemez, Engin; Hafner, Armin; Schlemminger, Christian; Kriezi, Ekaterini E.; Khorshidi, Vahid (Peer reviewed; Journal article, 2022)The field data from an integrated CO2 refrigeration system installed in a supermarket located north of the capital of Lisbon was analyzed. The goal was to demonstrate the effect and performance of multi-ejectors on a ... -
Performance evaluation of two-stage mechanical vapour recompression with turbo-compressors
Bantle, Michael; Schlemminger, Christian; Tolstorebrov, Ignat; Ahrens, Marcel; Evenmo, Kjetil (Chapter, 2018)Mechanical Vapour Recompression (MVR) is an open loop heat pump system using water (R718) as working fluid, one of the most abundant and safest refrigerant on the planet. The concept can significantly reduce the energy ... -
Performance of high temperature heat pump for simultaneous and efficient production of ice water and process heat
Schlemminger, Christian; Svendsen, Eirik Starheim; Foslie, Sverre Stefanussen; Bantle, Michael; Bamigbetan, Opeyemi Olayinka; Nekså, Petter (Chapter, 2019)Industrial processes like milk production often require simultaneous cooling and heating at temperature of 1 °C to 10 °C and 90 °C to 120 °C, respectively. High temperature heat pumps (HTHP) with natural working fluids are ...