Multiple modes of a natural circulation evaporator |
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| Affiliation: | 1. Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai 400 019, India;2. Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India;3. School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia;4. Department of Chemical Engineering, Indian Institute of Technology, Gandhinagar, Gujarat 382 424, India;5. Reliance Technology Group, Reliance Industries Limited, Navi Mumbai 400 701, India;1. University College London, Department of Biochemical Engineering, Bernard Katz Building, London WC1H 0AH, UK;2. Università di Bologna, Dipartimento di Ingegneria Civile, Chimica, Ambientale e dei Materiali, Viale del Risorgimento 2, Bologna, Italy;3. Adolf Kühner AG, Dinkelbergstrasse 1, CH-4127 Birsfelden, Switzerland;4. University College London, Department of Mechanical Engineering, Torrington Place, London WC1E 7JE, UK;1. VNU-HCM, Key Laboratory of Chemical Engineering and Petroleum Processing (Key CEPP Lab), Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam;2. Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam;3. Vietnam National University Ho Chi Minh City (VNU-HCM), Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam;4. University of Science, 227 Nguyen Van Cu, District 5, Ho Chi Minh City, Vietnam;1. Department of Nuclear Science and Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA;2. Mines Paris-PSL University, Centre de Recherche sur les Risques et les Crises, 06904 Sophie Antipolis, France;3. Energy Department, Politecnico di Milano, Via La Masa 34, 20156 Milan, Italy |
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| Abstract: | The system behaviour of an open single tube, steam heated natural circulation evaporator has been investigated at heating steam pressures up to 0.44 MPa and different subcoolings of the process medium water. In the studied range of parameters, diverse operational states occurred which have been recognized for the first time as geysering coupled with manometer oscillation as well as first, second and third orders of density wave oscillation of type I. Due to the strong nonlinear behaviour of the system, up to three states appear in certain ranges of parameter constellations. By defined setting of initial conditions and distinct perturbations of the system, the individual states can be set. |
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