Browsing NTNU Open by Author "Nord, Natasa"
Now showing items 21-40 of 164
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Bruk av prediksjonsmodeller for optimal styring av snøsmelteanlegg
Brandsnes, Mikkel (Master thesis, 2021)I 2018 kom hele 37 % av Norges totale energiforbruk fra bygningssektoren, og den utgjorde med det den største delen av norsk energiforbruk. Samtidig fokuseres det stadig mer på smarte klimatekniske løsninger i bygg for å ... -
Building design strategy for cold climate using passive design and renewable technologies
Tokbolat, Serik (Doctoral theses at NTNU;2017:168, Doctoral thesis, 2017)This thesis presents an analysis of various measures and technologies leading to establishing a strategy to achieve energy efficiency in buildings, particularly in the context of Kazakhstan. The developed strategies can ... -
Building energy performance assessment using volatility change based symbolic transformation and hierarchical clustering
Ma, Zhenjun; Yan, Rui; Li, Kehua; Nord, Natasa (Journal article; Peer reviewed, 2018)This paper presents the development of a symbolic transformation based strategy with interpretability and visualisation for building energy performance assessment. The strategy was developed using shape definition language ... -
Building heating applications with phase change material: A comprehensive review
Li, Yantong; Nord, Natasa; Xiao, Qiangqiang; Tereshchenko, Tymofii (Peer reviewed; Journal article, 2020)Energy crisis and environmental problems motive a variety of research strategies to increase energy efficiency, decrease stress on energy infrastructure, and consequently reduce CO2 emissions. Improving efficiency of ... -
Building Retrofitting through Coupling of Building Energy Simulation-Optimization Tool with CFD and Daylight Programs
Rabani, Mehrdad; Madessa, Habtamu Bayera; Nord, Natasa (Peer reviewed; Journal article, 2021)Simultaneous satisfaction of both thermal and visual comfort in buildings may be a challenging task. Therefore, this paper suggests a comprehensive framework for the building energy optimization process integrating ... -
CFD study on the effect of Archimedes number and heating rate on the thermal stratification of a ventilated office
Rabani, Mehrdad; Madessa, Habtamu Bayera; Nord, Natasa (Chapter, 2018)This paper dealt with simulating a typical occupied office equipped with displacement ventilation using CFD method. The STAR-CCM+ commercial software was employed for performing the simulations in order to analyze the trend ... -
Challenges and potentials for low-temperature district heating implementation in Norway
Nord, Natasa; Nielsen, Elise Kristine Løve; Kauko, Hanne; Tereshchenko, Tymofii (Journal article; Peer reviewed, 2018)Current district heating (DH) systems with high temperatures are facing many challenges that may decrease its competitiveness. Some of the challenges are decreased heat demands due to energy efficient buildings and high ... -
Challenges with the calibration of building energy simulation models
Ramm, Kristoffer (Master thesis, 2013)In order to correctly understand and predict the energy use of a building, simulation tools is often utilized in the industry. These simulation tools can predict the estimated energy use in buildings using inserted parameters; ... -
Control strategy for battery-supported photovoltaic systems aimed at peak load reduction
Zhuravchak, Ruslan; Nord, Natasa; Brattebø, Helge (Journal article; Peer reviewed, 2019)The use of photovoltaic (PV) technologies is one of the key means for achieving the balance between operational power demand and generation in net Zero Energy Buildings (nZEBs). However, direct use of PV power on-site is ... -
Cost savings and CO2 emissions reduction potential in the German district heating system with demand response
Ju, Yuchen; Lindholm, Joakim; Verbeck, Moritz; Jokisalo, Juha; Kosonen, Risto; Janβen, Philipp; Li, Yantong; Schäfers, Hans; Nord, Natasa (Peer reviewed; Journal article, 2021)Demand response (DR) has been an effective technique to maximize the proportion of renewable energies integrated into energy supply systems. This paper investigated the benefits of DR on three building types (apartment ... -
Data informed physical models for district heating grids with distributed heat sources to understand thermal and hydraulic aspects
Nord, Natasa; Shakerin, Mohammad; Tereshchenko, Tymofii; Verda, Vittorio; Borchiellini, Romano (Peer reviewed; Journal article, 2021)The aim of the study was to develop data informed physical models for simulation of district heating (DH) grids for better presentation of hydraulic and thermal aspects in the DH grids integrating heat prosumers. A DH grid ... -
Data-driven analysis of electricity use for office buildings: a Norwegian case study
Ding, Yuemin; Ding, Yiyu; Nord, Natasa (Peer reviewed; Journal article, 2021)Buildings are major consumers of primary energy and main contributors to carbon emission. To improve energy efficiency, it is essential to understand the characteristics of energy use in buildings. This study uses an in-use ... -
Design and Energy Analysis of Natural and Hybrid Ventilation Strategies for Norwegian Office Buildings
Halderaker, Ingrid D (Master thesis, 2016)Buildings lack of sufficient flexibility and generality leads to the need of comprehensive adjustments when new tenants are moving in. In addition, many building owners experience faults and problems with the operation ... -
Development and analysis of hourly DHW heat use profiles in nursing homes in Norway
Ivanko, Dmytro; Walnum, Harald Taxt; Nord, Natasa (Peer reviewed; Journal article, 2020)Representative profiles for domestic hot water (DHW) heat use are the main instruments for improvement in operation and design of DHW systems in buildings. To improve the existing method for DHW heat use profiles development ... -
DHW tank sizing considering dynamic energy prices
Nord, Natasa; Ding, Yuemin; Ivanko, Dmytro; Walnum, Harald Taxt (Peer reviewed; Journal article, 2021)Due to the rapid development of the building stock in Norway, the energy use in this segment is drastically increasing. Therefore, improving the energy performance of buildings becoming an urgent problem. Among technical ... -
Distinguish between the economic optimal and lowest distribution temperatures for heat-prosumer-based district heating systems with short-term thermal energy storage
Li, Haoran; Hou, Juan; Hong, Tianzhen; Nord, Natasa (Peer reviewed; Journal article, 2022)Decreasing distribution temperature is the key driving force for energy-efficient and economic-competitive district heating (DH) systems, powering the transition from the 1st generation high-temperature steam-based DH ... -
Documentation of an integrated thermal energy system for a building complex
Rohde, Daniel; Bantle, Michael; Andresen, Trond; Nord, Natasa (Chapter, 2015)In large buildings and building complexes, energy use can be reduced by efficient interaction between heating and cooling demands and thermal storage (short and long term storage). This work describes an integrated energy ... -
Dokumentering og evaluering av ny teknisk løsning for vannbåren varme i norske leilighetsbygg
Nørstebø, Kristin (Master thesis, 2018)I Norge er det strenge krav til energibruk i leilighetsbygg og byggereglene stiller krav om minst 60 % energifleksibel oppvarming. Dette har gjort at etterspørselen etter effektive og billigere løsninger for vannbåren ... -
Dynamic modeling of local district heating grids with prosumers: A case study for Norway
Kauko, Hanne; Kvalsvik, Karoline Husevåg; Rohde, Daniel; Nord, Natasa; Utne, Åmund (Journal article; Peer reviewed, 2018)District heating (DH) will play an important role in the future fossil-free energy systems by enabling increased utilization of waste heat and renewable heat sources to cover buildings' heat demand. A prerequisite for this ... -
Dynamic modelling of local low-temperature heating grids: A case study for Norway
Kauko, Hanne; Kvalsvik, Karoline Husevåg; Rohde, Daniel; Hafner, Armin; Nord, Natasa (Journal article; Peer reviewed, 2017)Today's district heating (DH) networks in Norway are 2nd and 3rd generation systems, with supply temperatures ranging from 80 to 120 °C. In new developments, it is desirable to shift to 4th generation, low-temperature ...