This README file was generated on 2025-12-01 by Elena Steinwender.
Last updated: 2026-01-20.

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GENERAL INFORMATION
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// Title Conference Paper: Alternative Sorptionsmittel für Absorptionswärmepumpen: Stoffeigenschaften von IL und DES sowie Betriebsverhalten im "gläsernen Demonstrator"
// DOI:https://doi.org/10.3217/t994b-zbs17
// Contact Information

     // Name: Elena Steinwender
     // Institution: Institute of Thermal Engineering, Graz University of Technology
     // Email: elena.steinwender@tugraz.at
  
// Contributors: Michael Wernhart, Elena Steinwender, René Rieberer, Christoph Weinzettl, Marlene Kienberger, Markus Damm, Roland Kalb, Mike Otto, Christian Kemmerzehl
// Kind of data: Conference Paper (.pdf)
// Date of data collection/generation: 2021-05-25 - 2025-09-30
// Funding sources:  This project is funded by the Austrian Research Promotion Agency (“FFG”) under project number FO999905735 with funds from the Climate and Energy Fund and is carried out within the framework of the “Energy Research Program 2022”.

Publication:
Wernhart, M., Steinwender, E., Rieberer, R., Weinzettl, C., Kienberger, M., Damm, M., Kalb, R., Otto, M., Kemmerzehl, C. (2025). Alternative Sorptionsmittel für Absorptionswärmepumpen: Stoffeigenschaften von IL und DES sowie Betriebsverhalten im "gläsernen Demonstrator", in Proc. Deutsche Kälte-Klima-Tagung 2025, Magdeburg, Germany, 2025/11/20-2025/11/21

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METHODOLOGICAL INFORMATION
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This conference paper analyzes experimentally determined material properties (e.g., thermal stability, corrosion behavior, heat capacity, contact angle) of the material pairs H2O/[EMIM][MeSO3] and H2O/Betain:Glycerol. In addition, the thermal and flow characteristics of H2O/[EMIM][MeSO3] are evaluated in the closed absorption heat pump process of a "glass demonstrator." In both cases, H2O/LiBr is used as a benchmark.
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DATA & FILE OVERVIEW
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00_README.txt
01_Conference_Paper_DKV_2025_Wernhart_et_al.pdf
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DATA-SPECIFIC INFORMATION FOR: Common
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Symbols:					
β … heating rate (K/min) 			
𝑐𝑝 … specific heat capacity (J/(kg ∙ K)) 	
𝛥 … difference (−) 				
𝛥sig … difference signal [muV] 			
𝜀 … Efficiency/effectivnesss (−)		
f ... specific solution cycle (𝑚̇_𝑅𝑆𝑜/𝑚̇_𝑅𝑒𝑓 )	
𝜂 … dynamic viscosity (Pa ∙ s) 			 
ℎ ... specific enthalpy (kJ/kg) 		
m ... mass (kg) 				
𝑚̇ ... Massenflow (kg/s) 			
𝑞 … steam number (kg_vap/kg_v+l) 			
𝑝 ... pressure (Pa) 				
𝑄̇ ... heat flow (W) 				
𝜌 ... density (kg/m3) 				
S ... spec. reference heat capacity (J/(kg ∙ K)	
𝑡 … temperatur (°C) 				
𝑇 … temperatur (K) 				
𝜏 … time (d) 					
U ... decomposition rate (%/𝜏)			
𝑉̇ ... volume flow (m3/s) 			
w ... water loading (kgH2O/kgSol) 		
𝑥 ... mass fraction (kgSol/kgH2O-Sol) 	

Abbreviations and Indices:
ABS ... absorber
AWP ... absorption heat pump
CON ... condensator
Cond ... condensation
DES ... deep eutectic solvent 
E ... excess
EVA ... evaporator
evap ... evaporation
FTIR Fourier-Transformations-Infraredspectrometer
GEN ... generator
H2O ... water as refrigerant
HSo ... high temperature heat source
IL ... ionic liquid
in ... inlet 
l ... liquid
LiBr ... lithium bromide
LSo ... low temperature heat source
NMR ... nuclear magnetic resonance
out ... outlet
PSo ... poor solution
Ref ... refrigerant
RSo ... rich solution
sat ...  saturated
Si ... heat sink (medium temperature)
SHX ... solvent heat exchanger
Sol ... absorbent
SP ... solvent pump 
v ... vapor 

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SHARING/ACCESS INFORMATION
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Use citation as recommended by the repository for use of  Conference Paper.