Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 012171 |
| Fachzeitschrift | Journal of Physics: Conference Series |
| Jahrgang | 395 |
| Ausgabenummer | 1 |
| Frühes Online-Datum | 26 Nov. 2012 |
| Publikationsstatus | Veröffentlicht - 2012 |
| Veranstaltung | 6th European Thermal Sciences Conference, Eurotherm 2012 - Poitiers, Frankreich Dauer: 4 Sept. 2012 → 7 Sept. 2012 |
Abstract
The dynamic thermohydraulic behaviour of a vertical tube reboiler is investigated. Natural circulation reboilers are widely used in chemical industries, especially as column heater. Their main components are an evaporator and a separator which are connected in a loop. The product fluid coming from the separator is heated and partially evaporated. Entering the separator the two-phase flow is separated into liquid and vapour phase, due to gravity. As a result of evaporation the mean density of the fluid decreases. Caused by the density difference between evaporator and separator contents, a natural circulation occurs. Under certain conditions flow instabilities will occur, triggered by different causes. To investigate these instabilities and to distinguish between them as to their type a technical pilot plant scale test facility is used. Its main components are an evaporator, a separator and a condenser. The steam heated evaporator is designed as a straight tube heat exchanger with seven tubes of 4 m length each. By varying various operating parameters such as product vapour pressure, heat load and submergence level stable and unstable conditions can be observed and analysed. Based on the experimental results and criteria found in literature a stability diagram will be developed.
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in: Journal of Physics: Conference Series, Jahrgang 395, Nr. 1, 012171, 2012.
Publikation: Beitrag in Fachzeitschrift › Konferenzaufsatz in Fachzeitschrift › Forschung › Peer-Review
}
TY - JOUR
T1 - Experimental investigation of the dynamic thermohydraulic behaviour of vertical tube reboilers
AU - Kessler, M.
AU - Kabelac, S.
N1 - Copyright: Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - The dynamic thermohydraulic behaviour of a vertical tube reboiler is investigated. Natural circulation reboilers are widely used in chemical industries, especially as column heater. Their main components are an evaporator and a separator which are connected in a loop. The product fluid coming from the separator is heated and partially evaporated. Entering the separator the two-phase flow is separated into liquid and vapour phase, due to gravity. As a result of evaporation the mean density of the fluid decreases. Caused by the density difference between evaporator and separator contents, a natural circulation occurs. Under certain conditions flow instabilities will occur, triggered by different causes. To investigate these instabilities and to distinguish between them as to their type a technical pilot plant scale test facility is used. Its main components are an evaporator, a separator and a condenser. The steam heated evaporator is designed as a straight tube heat exchanger with seven tubes of 4 m length each. By varying various operating parameters such as product vapour pressure, heat load and submergence level stable and unstable conditions can be observed and analysed. Based on the experimental results and criteria found in literature a stability diagram will be developed.
AB - The dynamic thermohydraulic behaviour of a vertical tube reboiler is investigated. Natural circulation reboilers are widely used in chemical industries, especially as column heater. Their main components are an evaporator and a separator which are connected in a loop. The product fluid coming from the separator is heated and partially evaporated. Entering the separator the two-phase flow is separated into liquid and vapour phase, due to gravity. As a result of evaporation the mean density of the fluid decreases. Caused by the density difference between evaporator and separator contents, a natural circulation occurs. Under certain conditions flow instabilities will occur, triggered by different causes. To investigate these instabilities and to distinguish between them as to their type a technical pilot plant scale test facility is used. Its main components are an evaporator, a separator and a condenser. The steam heated evaporator is designed as a straight tube heat exchanger with seven tubes of 4 m length each. By varying various operating parameters such as product vapour pressure, heat load and submergence level stable and unstable conditions can be observed and analysed. Based on the experimental results and criteria found in literature a stability diagram will be developed.
UR - http://www.scopus.com/inward/record.url?scp=84875048569&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/395/1/012171
DO - 10.1088/1742-6596/395/1/012171
M3 - Conference article
AN - SCOPUS:84875048569
VL - 395
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012171
T2 - 6th European Thermal Sciences Conference, Eurotherm 2012
Y2 - 4 September 2012 through 7 September 2012
ER -