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  4. Investigation of pressure drop in refrigerant pipes of an automotive air conditioning system
 
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Investigation of pressure drop in refrigerant pipes of an automotive air conditioning system

Publikationstyp
Conference Paper
Date Issued
2021-05
Sprache
English
Author(s)
Meinert, Robin  
Schmitz, Gerhard  
Herausgeber*innen
Purdue University  
Institut
Technische Thermodynamik M-21  
TORE-URI
http://hdl.handle.net/11420/10273
Article Number
2236
Citation
6th International High Performance Buildings Conference: 2236 (2021)
Contribution to Conference
18th International Refrigeration and Air Conditioning Conference, 2021  
Publisher Link
https://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=3235&context=iracc
Publisher
Purdue University Libraries
This paper presents an experimental and numerical investigation of the pressure drop of automotive refrigerant pipes. The measurement is done with a test rig that is able to set a defined one-or two-phase state at the inlet of an exchangeable test section. With the experimental data, CFD simulations are validated. There is a liquid and a hot gas line being investigated in this work. It turns out that transition pieces between pipe and hose elements have a significant influence on the pressure drop. Although the connection technology is the same, it must always be checked how the internal structure of this transition piece is designed and whether this has an influence on the pressure drop. It is also found that the compressibility of the gas, especially at low pressures and high mass flows, is a physical effect that cannot be neglected and must be implemented in the CFD simulation. All in all, CFD simulations are capable of reproducing the experimental data well after taking these findings into account.
DDC Class
600: Technik
620: Ingenieurwissenschaften
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