The recent advance in measurement equipment, data transmission, and computational power enables digitalizing the process operation and constructing the digital twin. This implies that various existing model-based appl...
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ISBN:
(纸本)9788993215212
The recent advance in measurement equipment, data transmission, and computational power enables digitalizing the process operation and constructing the digital twin. This implies that various existing model-based applications such as process monitoring, forecasting, decision support, and control can be applied to chemical processes with the most updated model in real-time. However, the systematic method of integrating the process data, model-based applications, database, and the user interface has not been well addressed. Therefore, this paper aims to fill this gap by proposing the workflow on applying the integrating framework called gPROMS Digital Application Platform that can receive and validate the process data, execute the various model-based applications, and visualizing the data and process results in a customized web-based user interface. For the case study, the integrating framework is constructed to optimize the SMR process in real-time. The gPROMS Process was used to construct the process model and the optimization problem was solved to find the optimal operating conditions that maximize the thermal efficiency of the reactor. The database stores the model inputs and outputs, and sends the signals to execute the model-based applications. Lastly, the web-based user interface was constructed to offer an environment to monitor the process status and execute the process optimization.
Thermal barrier coatings (TBCs) are being extensively used for improving the performance and extending the life of combustor and gas turbine components. TBC thermal properties, thermal conductivity and heat capacity (...
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ISBN:
(纸本)9780470594681
Thermal barrier coatings (TBCs) are being extensively used for improving the performance and extending the life of combustor and gas turbine components. TBC thermal properties, thermal conductivity and heat capacity (the product of density and specific heat), are important parameters in those applications. These TBC properties are usually measured by destructive methods, involving separating the ceramic coating layer from the substrate and performing density, specific heat, and thermal diffusivity measurements. Nondestructive evaluation (NDE) methods, on the other hand, allow for direct TBC property measurement on natural TBC samples. Therefore, they can be used for inspecting the quality of as-processed components and monitoring TBC degradation during service. This paper presents a multilayer thermal-modeling NDE method, which analyzes data obtained from pulsed thermal imaging, to determine thermal conductivity and heat capacity distributions over the entire surface of a TBC specimen. The measurement accuracy was investigated and compared with standard destructive measurement data. Experimental results are presented and discussed.
In this paper, a novel cooperative index modulation multiple access (C-IMMA) scheme for multi-user visible light communication (VLC) systems is proposed. Simulation results show that the proposed C-IMMA scheme can ach...
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ISBN:
(数字)9798350308396
ISBN:
(纸本)9798350308402
In this paper, a novel cooperative index modulation multiple access (C-IMMA) scheme for multi-user visible light communication (VLC) systems is proposed. Simulation results show that the proposed C-IMMA scheme can achieve a remarkable 14 dB signal-to-noise ratio (SNR) gain compared with the optimal benchmark scheme.
One of the main concerns for smartphone users is the quality of apps they download. Before installing any app from the market, users first check its rating and reviews. However, these ratings are not computed by exper...
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We present a new denotational model for the untyped λ-calculus, using the techniques of game semantics. The strategies used are innocent in the sense of Hyland and Ong (Inform. and Comput., to appear) and Nickau (Her...
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Based on weighted signal subspace fitting and the minimum redundant array, a minimum redundant-weighted signal subspace fitting (MR-WSSF) algorithm is proposed. The proposed algorithm utilized few virtual elements and...
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