Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/80409
Title: Dynamic study of ORC evaporator operating under fluctuating thermal power from waste heat sources
Authors: Jiménez-Arreola, Manuel
Pili, Roberto
Wieland, Christoph
Romagnoli, Alessandro
Keywords: Organic Rankine Cycle
Kettle Boiler
DRNTU::Engineering::Mechanical engineering
Issue Date: 2017
Source: Jiménez-Arreola, M., Pili, R., Wieland, C., & Romagnoli, A. (2017). Dynamic study of ORC evaporator operating under fluctuating thermal power from waste heat sources. Energy Procedia, 143, 404-409. doi:10.1016/j.egypro.2017.12.704
Series/Report no.: Energy Procedia
Abstract: Waste heat recovery systems such as the Organic Rankine Cycle (ORC) face the challenge of being subordinated to the main process, and therefore they are not allowed to control the heat source as conventional power systems. Because of the conceivable fluctuating characteristic of the heat source the dynamic response of the system has to be analyzed. The component of major importance for the dynamics of the system is the evaporator, because it links the heat source to the ORC. Although different dynamic models of heat exchangers for ORC are available in literature, researchers have hardly focused their attention on a thorough analysis of the key factors that affect the evaporator dynamics. In particular, the influence of the evaporator geometry and materials is analyzed in this work. A characterization approach based on the main heat exchanger construction parameters is carried out in order to predict the evaporator response time and how it is affected by those design factors. With the help of dynamic simulations, the approach is applied to a real kettle boiler geometry. Possible improvements in the heat exchanger geometry that can lead to a dynamically more robust system and buffering some of the intermittency of the heat source are foreseen.
URI: https://hdl.handle.net/10356/80409
http://hdl.handle.net/10220/46506
ISSN: 1876-6102
DOI: 10.1016/j.egypro.2017.12.704
Schools: School of Mechanical and Aerospace Engineering 
Interdisciplinary Graduate School (IGS) 
Research Centres: Energy Research Institute @ NTU (ERI@N) 
Rights: © 2017 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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