Blar i NTNU Open på forfatter "Zhang, Nan"
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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 ... -
Evaluation of the warranty cost of a product with type III stochastic dependence between components
Zhang, Nan; Fouladirad, Mitra; Barros, Anne (Journal article; Peer reviewed, 2018)This paper analyses respectively the expected warranty costs from the perspectives of the manufacturer and the consumer. For a two-component series system with stochastic dependence between components, both the non-renewing ... -
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 ... -
Maintenance analysis of a two-component load-sharing system
Zhang, Nan; Fouladirad, Mitra; Barros, Anne (Journal article, 2017)This paper presents a two-component load-sharing system. The failure rates of the two components are time dependent and load dependent. Whenever one fails, it is imperfectly repaired with a time delay during which the ... -
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 ... -
Optimal imperfect maintenance cost analysis of a two-component system with failure interactions
Zhang, Nan; Fouladirad, Mitra; Barros, Anne (Journal article; Peer reviewed, 2018)This paper considers a two-component system with failure interactions. Component 1 is repairable and component 2 is non repairable and is subject to an increasing degradation. One considers two different shock models. In ... -
Reliability-based measures and prognostic analysis of a K-out-of-N system in random environments
Zhang, Nan; Fouladirad, Mitra; Barros, Anne (Journal article; Peer reviewed, 2018)In this paper, we study reliability based measures and prognostic problems of a K-out-of-N system in which the failure process of each component depends not only on its intrinsic characteristic but also on its operating ... -
Warranty analysis of a two-component system with failure interaction
Zhang, Nan; Fouladirad, Mitra; Barros, Anne (Chapter, 2017)In recent decades, more and more attention has been paid to the warranty study of multicomponent systems. Compared to the reliability and cost analysis of single item systems, failure dependence between items is a major ... -
Warranty analysis of a two-component system with type I stochastic dependence
Zhang, Nan; Fouladirad, Mitra; Barros, Anne (Journal article; Peer reviewed, 2017)This article develops the warranty cost analysis of a two-component in-series system with stochastic dependence. From the perspectives of both the manufacturer and the consumer, the short-run total profits and costs under ...