Blar i NTNU Open på forfatter "Smitt, Silje Marie"
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Energy use and retrofitting potential of heat pumps in cold climate hotels
Smitt, Silje Marie; Tolstorebrov, Ignat; Gullo, Paride; Pardiñas, Ángel Á.; Hafner, Armin (Peer reviewed; Journal article, 2021)Tourism, and thereby hotels, play a crucial role in the European economy. The hotel sector features high energy consumption, which greatly contributes to the global warming effect. Thus, there is a need to investigate ... -
Evaluation of Integrated Concepts with CO2 for Heating, Cooling and Hot Water Production
Smitt, Silje Marie; Pardiñas, Ángel Á.; Hafner, Armin (Journal article; Peer reviewed, 2021)The hotel sector is characterized by high thermal demands and a large carbon footprint, which greatly contributes to the global warming effect. Consequently, there is a need to investigate solutions that can reduce energy ... -
Heat pump/chiller system for centralized kitchens in India
Singh, Simarpreet; Hafner, Armin; Banasiak, Krzysztof; Seshadri, Satyanarayanan; Maiya, Prakash; Smitt, Silje Marie; Gabrielii, Cecilia H (Chapter, 2020)A heat pump unit using CO2 as working fluid is designed to meet not only a part of the heating demand in the centralised kitchen at The Akshaya Patra Foundation, Bengaluru, India, but also the entire cooling demand to ... -
Integrated CO2 system with HVAC and hot water for hotels: Field measurements and performance evaluation
Smitt, Silje Marie; Hafner, Armin; Tolstorebrov, Ignat (Journal article; Peer reviewed, 2020)This study investigates the performance of an integrated CO2 (R744) heat pump and chiller unit in a Norwegian hotel. The system consists of a single unit for heating, cooling and hot water with an integrated thermal storage. ... -
Integrated energy concepts for high performance hotel buildings
Smitt, Silje Marie; Hafner, Armin (Journal article, 2018)Integrated energy concepts with heat recovery are not widely applied for hotels, i.e. there is a huge potential to further reduce the specific primary energy demand in this kind of buildings. The development and implementation ... -
Integrated Energy concepts for high performance hotel buildings
Smitt, Silje Marie (Master thesis, 2017)On a national level, buildings are responsible for roughly 40% of the primary energy consumption, where domestic hot water and space heating are major contributors. By introducing an energy system that employs natural ... -
Integrated R744 unit for hotels: Analysis of field data
Smitt, Silje Marie; Tolstorebrov, Ignat; Hafner, Armin (Chapter, 2020)This study investigates the performance of an integrated R744 HVAC and domestic hot water unit for a Norwegian hotel. The thermal system of the hotel is described and data from the first year of operation are analyzed. The ... -
Investigation of integrated CO2 heat pumping systems for hotels in cold climates
Smitt, Silje Marie (Doctoral theses at NTNU;2021:391, Doctoral thesis, 2021) -
Machine learning methods for prediction of hot water demands in integrated R744 system for hotels
Zhang, Zhanluo; Smitt, Silje Marie; Eikevik, Trygve Magne; Hafner, Armin (Chapter, 2020)Load forecasting can help modern energy systems achieve more efficient operation by means of more accurate peak power shaving and more reliable control. This paper proposes a framework based on machine learning algorithms ... -
Numerical performance investigation of a CO2 heat pump and refrigeration system for a Nordic hotel
Smitt, Silje Marie; Hafner, Armin (Chapter, 2019)This article evaluates the first adaptation of a CO2 supermarket unit as an integrated solution for hotel applications. The system consists of a single unit for heating, ventilation, air-conditioning (HVAC) and domestic ... -
Presentation of the first combined CO2 heat pump, air conditioning and hot tap water system for a hotel in Scandinavia
Smitt, Silje Marie; Hafner, Armin; Hoksrød, Erik (Chapter, 2019)Hotels are high-energy consuming buildings with numerous demands for heating and cooling at several temperature levels. The heating load is largely dominated by hot water production (28%: NVE, 2016) in order to meet the ...