Please use this identifier to cite or link to this item: http://dx.doi.org/10.14279/depositonce-8707
Main Title: EES simulation model for the part load behaviour of single stage H2O/LiBr absorption chillers
Author(s): Albers, Jan
Type: Software
Is Supplement To: http://dx.doi.org/10.14279/depositonce-8708
http://dx.doi.org/10.14279/depositonce-8703
References: http://dx.doi.org/10.14279/depositonce-8709
Language Code: en
Abstract: This simulation model (i.e. the main file AKA_CE_Simulation.EES) calculates the partload behaviour of a single stage H2O/LiBr absorption chiller. For the characterisation of the chiller or heat pump only the heat transfer capabilities (i.e. the UA-values) of five heat exchangers (Desorber, Evaporator, Condenser, Absorber and Solution heat exchanger) and the pumped solution flow rate have to be known. Examplary values are provided in a supplementary library file (i.e. ZAKA_20190721ja.LIB). The heat transfer calculation for the desorber can account for different design configurations where adiabatic sorption processes may occur (e.g. sprayed or irrigated heat exchangers, case A) or not (e.g. flooded heat exchangers, case B). In addition to the differentiation into case A and B there are three possibilities for the heat transfer calculation in ab- and desorber: a) case A or B with temperature independent heat capacity flow rate, b) case A or B with linear temperature dependent heat capacity flow rate, c) case A or B with arbitrary temperature dependent heat capacity flow rate (cell method) Variable internal and external flow rates are possible. But only for the external flow rates the heat transfer coefficients are adapted according to the method described in subsection 2.3.6 of the phd. In parallel to the internal cycle simulation combined with the heat transfer calculation the established and enhanced method of characteristic equations is applied (cf. chapter 3 of the phd). The results of the cycle simulation are plotted in a p-T-diagram and h-xi-diagram. Additional plots which compare the simulated heat flows in evaporator and desorber to the results derived from established and enhanced method as function of the characteristic temperature difference DDt are provided.
URI: https://depositonce.tu-berlin.de/handle/11303/9664
http://dx.doi.org/10.14279/depositonce-8707
Issue Date: 2019
Date Available: 7-Aug-2019
DDC Class: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Subject(s): Simulation
characteristic equation method
heat transfer
absorption chiller
Engineering Equation Solver
License: https://choosealicense.com/licenses/gpl-3.0/
Appears in Collections:FG Maschinen- und Energieanlagentechnik » Research Data

Files in This Item:
File Description SizeFormat 
AKA_CE_Simulation_20190801ja.zipEES simulation files1.02 MBZIP ArchiveView/Open
readme.txt4.36 kBTextView/Open


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