Implementation of Adaptive Observer and Mathematical Model Validation of the Evaporator of an Absorption Heat Transformer

Ricardo Fabricio Escobar-Jiménez (), Isaac Justine Canela-Sánchez (), Manuel Adam-Medina, Abisai Acevedo-Quiroz, Armando Huicochea-Rodríguez and David Juárez-Romero
Additional contact information
Ricardo Fabricio Escobar-Jiménez: Centro Nacional de Investigación y Desarrollo Tecnológico, Tecnológico Nacional de México, Int. Internado Palmira S/N, Palmira, Cuernavaca 62490, Morelos, Mexico
Isaac Justine Canela-Sánchez: Centro Nacional de Investigación y Desarrollo Tecnológico, Tecnológico Nacional de México, Int. Internado Palmira S/N, Palmira, Cuernavaca 62490, Morelos, Mexico
Manuel Adam-Medina: Centro Nacional de Investigación y Desarrollo Tecnológico, Tecnológico Nacional de México, Int. Internado Palmira S/N, Palmira, Cuernavaca 62490, Morelos, Mexico
Abisai Acevedo-Quiroz: Centro Nacional de Investigación y Desarrollo Tecnológico, Tecnológico Nacional de México, Int. Internado Palmira S/N, Palmira, Cuernavaca 62490, Morelos, Mexico
Armando Huicochea-Rodríguez: Centro de Investigación en Ingeniería y Ciencias Aplicadas, UAEM. Av. Universidad No. 1001, Col. Chamilpa, Cuernavaca 62209, Morelos, Mexico
David Juárez-Romero: Centro de Investigación en Ingeniería y Ciencias Aplicadas, UAEM. Av. Universidad No. 1001, Col. Chamilpa, Cuernavaca 62209, Morelos, Mexico

Mathematics, 2024, vol. 12, issue 23, 1-21

Abstract: This article presents the implementation of an adaptive observer to validate a falling film evaporator mathematical model. The evaporator consists of four coils, and each coil has four tubes. The heating flow in the first and third coils flows from bottom to top. Meanwhile, the heating flow in the second and fourth coils flows from top to bottom. The mathematical model of the evaporator is parameterized with the geometry data of the experimental device. Since the mathematical model depends on the film breakdown onset Reynolds number ( R e O n s e t ) to estimate the evaporator temperatures, an adaptive observer is applied to estimate this unknown parameter ( R e O n s e t ). The observer design is developed through the evaporator mathematical model. The research aims to estimate the R e O n s e t at different operating conditions to accurately estimate the evaporator temperatures since there is no general correlation for estimating it or a sensor to measure this parameter. Once the R e O n s e t is estimated at different operating conditions, the R e O n s e t results are injected into the model for validation. The results of implementing the observer showed that the temperature estimation errors are between 0.00003% and 0.02815%. Moreover, the temperatures simulated with the model using the R e O n s e t estimated with the observers had errors between 0.04012% and 0.14160%.

Keywords: adaptive observer; heat transfer; absorption heat transformer; evaporation process; nested helical heat exchanger (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2227-7390/12/23/3637/pdf (application/pdf)
https://www.mdpi.com/2227-7390/12/23/3637/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jmathe:v:12:y:2024:i:23:p:3637-:d:1525865

Access Statistics for this article

Mathematics is currently edited by Ms. Emma He

More articles in Mathematics from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().