Browsing NTNU Open by Author "Li, Yantong"
Now showing items 1-13 of 13
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An ANN-based optimization approach of building energy systems: Case study of swimming pool
Li, Yantong; Nord, Natasa; Zhang, Nan; Zhou, Cheng (Peer reviewed; Journal article, 2020)Reliable models are necessary for optimization of building energy systems. However, artificial neural network (ANN) models developed by measured data is hard to accurately reflect physical characteristics of systems due ... -
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 ... -
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 ... -
Investigation of Combined Heating and Cooling Systems with Short-and Long-Term Storages
Shakerin, Mohammad; Eikeskog, Vilde; Li, Yantong; Harsem, Trond Thorgeir; Nord, Natasa; Li, Haoran (Peer reviewed; Journal article, 2022)Modern buildings in cold climates, like Norway, may have simultaneous heating and cooling demands. For these buildings, integrated heating and cooling systems with heat pumps, as well as short-term and long-term thermal ... -
An investigation of using CO<inf>2</inf> heat pumps to charge PCM storage tank for domestic use
Li, Yantong; Nord, Natasa; Yin, Huibin (Journal article; Peer reviewed, 2023)Current investigations mainly focused on onefold phase change material (PCM) storage tank charging process, while the integration between a heat-source device and a PCM storage tank has been seldom considered. The investigation ... -
Investigation on the energy performance of using air-source heat pump to charge PCM storage tank
Li, Yantong; Zhang, Nan; Ding, Zhixiong (Peer reviewed; Journal article, 2020)Nowadays air-source heat pumps are widely used to collect heat from ambient air, which can reduce operating cost and protect environment when compared with fossil-based heating systems. To increase the flexibility of heat ... -
Model-based sizing of a CO2 heat pump for residential use
Li, Yantong; Nord, Natasa; Halvorsen, Henrik; Rekstad, Inge Håvard (Peer reviewed; Journal article, 2022)CO2 heat pumps have advantages of reducing ozone layer damage and offering high-temperature hot water in comparison with traditional heat pumps. However, sizing of CO2 heat pump components that guarantees reliable performance ... -
A multi-objective optimal design method for thermal energy storage systems with PCM: A case study for outdoor swimming pool heating application
Li, Yantong; Ding, Zhixiong; Shakerin, Mohammad; Zhang, Nan (Journal article; Peer reviewed, 2020)Traditional design methods for thermal energy storage systems (TES) with phase change material (PCM) are mostly based on worst-case scenario, which causes too large size of main components. Current optimal design methods ... -
Sizing and performance analyses of a combined heating and cooling system with the integration of short- and long-term storages
Shakerin, Mohammad; Eikeskog, Vilde; Li, Yantong; Harsem, Trond Th.; Nord, Natasa (Peer reviewed; Journal article, 2021)Technological advancements in the utilization of renewable energy sources have unveiled potentials for increasing building energy efficiency. Integrating heat pump-based energy systems with thermal storages is a suitable ... -
Study of a water-source CO2 heat pump for residential use: experimental discharge pressure control and performance analysis
Li, Yantong; Nord, Natasa; Rekstad, Inge Håvard; Skånøy, Stein Kristian; Sørensen, Lars Konrad (Peer reviewed; Journal article, 2021)The heat pumps with the refrigerant of carbon dioxide (CO2), i.e., CO2 heat pumps, have the merits of low price and environmentally friendliness in comparison with those with traditional refrigerants, e.g., hydrochlorofl ... -
A study on the integration of air-source heat pumps, solar collectors, and PCM tanks for outdoor swimming pools for winter application in subtropical climates
Li, Yantong; Nord, Natasa; Wu, Huijun; Yu, Zhun; Huang, Gongsheng (Peer reviewed; Journal article, 2020)This study presents a new integration of air-source heat pumps, solar collectors, and phase change material tanks regarding the dynamics of outdoor swimming pools, and investigates its application in outdoor swimming pools ... -
Swimming pool heating technology: A state-of-the-art review
Li, Yantong; Nord, Natasa; Huang, Gongsheng; Li, Xin (Peer reviewed; Journal article, 2020)A large amount of heat is needed to maintain the thermal comfort of both indoor and outdoor swimming pools in cold seasons. This motivates the development of various heating technologies aiming to reduce energy use, as ... -
Techno-economic optimization of open-air swimming pool heating system with PCM storage tank for winter applications
Li, Yantong; Ding, Zhixiong; Du, Yaxing (Peer reviewed; Journal article, 2020)Feasible heating systems have been designed to increase the availability of open-air swimming pools in winter in subtropical climate regions. However, the approach to optimally size the main components of the system from ...