Dynamic modeling and simulation of a double-effect absorption heat pump

Abstract This paper presents a new dynamic model to study the transient thermochemical behavior of a double-effect absorption heat pump (DEAHP). It has been designed according to the experience with an experimental DEAHP totally integrated into a solar-assisted multi-effect distillation (MED) plant set up at CIEMAT – Plataforma Solar de Almeria (PSA). The non-linear first-principles model was implemented using the equation-based object-oriented Modelica modeling language and is based on a mathematical formulation that describes the main heat and mass transfer phenomena in this kind of facilities. A modular and hierarchical modeling methodology has allowed a graphical modeling development. Submodels that wrap the different physical phenomena are interconnected between them, thus making a three level deep hierarchy. All the submodels have been calibrated and validated with experimental data. The numerical predictions show a good agreement with measured data.

[1]  Lourdes García-Rodríguez,et al.  Experimental assessment of connection of an absorption heat pump to a multi-effect distillation unit , 2010 .

[2]  Lidia Roca,et al.  Dynamic modeling and simulation of a solar-assisted multi-effect distillation plant , 2015 .

[3]  Andreas Pfeiffer,et al.  Optimization Library for Interactive Multi-Criteria Optimization Tasks , 2012 .

[4]  Siyoung Jeong,et al.  Dynamic simulation of an absorption heat pump for recovering low grade waste heat , 1998 .

[5]  Reinhard Radermacher,et al.  Absorption Chillers and Heat Pumps , 1996 .

[6]  W. Rohsenow.  A Method of Correlating Heat-Transfer Data for Surface Boiling of Liquids , 1952, Journal of Fluids Engineering.

[7]  Paul Kohlenbach,et al.  A dynamic simulation model for transient absorption chiller performance. Part II: Numerical results and experimental verification , 2008 .

[8]  Xiao Li,et al.  Recent advances in dynamic modeling of HVAC equipment. Part 1: Equipment modeling , 2014 .

[9]  Paul Kohlenbach,et al.  A dynamic simulation model for transient absorption chiller performance. Part I The model , 2008 .

[10]  Y. Çengel.  Heat and Mass Transfer: Fundamentals and Applications , 2000 .

[11]  Katya Scheinberg,et al.  Introduction to derivative-free optimization , 2010, Math. Comput..

[12]  François Boudéhenn,et al.  Proposal and validation of a model for the dynamic simulation of a solar-assisted single-stage LiBr/water absorption chiller , 2013 .

[13]  Lidia Roca,et al.  Operational improvements to increase the efficiency of an absorption heat pump connected to a multi-effect distillation unit , 2014 .

[14]  Kyaw Thu,et al.  A second law analysis and entropy generation minimization of an absorption chiller , 2011 .

[15]  Francesco Casella,et al.  The Modelica Fluid and Media library for modeling of incompressible and compressible thermo-fluid pipe networks , 2006 .

[16]  Lidia Roca,et al.  Dynamic modeling and performance of the first cell of a multi-effect distillation plant , 2014 .

[17]  Y. Kaita,et al.  Thermodynamic properties of lithium bromide-water solutions at high temperatures. , 2001 .

[18]  John C. Chato,et al.  Laminar condensation inside horizontal and inclined tubes , 1960 .

[19]  G. Poncia,et al.  Implementation of an object-oriented dynamic modeling library for absorption refrigeration systems , 2006 .

[20]  J. Fernández-Seara,et al.  Refrigerant falling film evaporation review: Description, fluid dynamics and heat transfer , 2014 .

[21]  Adrienne S. Lavine,et al.  Principles of Heat and Mass Transfer , 2018 .

[22]  F. Dittus,et al.  Heat transfer in automobile radiators of the tubular type , 1930 .

[23]  Younggy Shin,et al.  Simulation of dynamics and control of a double-effect LiBr-H2O absorption chiller. , 2009 .

[24]  John R. Thome,et al.  Falling-Film Evaporation on Tube Bundle with Plain and Enhanced Tubes—Part II: New Prediction Methods , 2010 .

[25]  Diego-César Alarcón-Padilla,et al.  First experimental results of a new hybrid solar/gas multi-effect distillation system: the AQUASOL project , 2008 .