Investigation of the dynamic heat transfer coefficient of R-134a in a horizontal pipe

Publikationstyp
Journal Article
Date Issued
2015-07-24
Sprache
English
Author(s)
Rückert, Jan Philipp  
Schmitz, Gerhard  
Institut
Technische Thermodynamik M-21  
TORE-URI
http://hdl.handle.net/11420/4972
Journal
Science and technology for the built environment  
Volume
21
Issue
5
Start Page
578
End Page
584
Citation
Science and Technology for the Built Environment 5 (21): 578-584 (2015)
Publisher DOI
10.1080/23744731.2015.1007834
Scopus ID
2-s2.0-84940393695
This article presents a test rig tomeasure the dynamic heat transfer coefficient of the refrigerant R-134a in a small-diameter horizontal pipe. The experiment layout is basically a cooling cycle. The basic components are a receiver tank filled with R-134a, a pump, an evaporator pipe, and a condenser. The evaporator pipe made out of copper is the main element. Thermocouples, pressure sensors, and a mass flow sensor provide the information necessary to determine the heat transfer coefficient of the horizontal pipe. In addition to the experimental investigations, a numerical model is created. The results are compared with the test rig results to validate the numerical model.
DDC Class
620: Ingenieurwissenschaften