The Darina IV test equipment is used to determine the characteristics of the radial compressor stages. The pressure and temperature of flowing air is measured at several measuring stations. During the analysis of the results, a suspicion arose regarding the influence on the results of some of the temperature sensors under certain conditions. To examine this phenomenon, a simple experimental rig was built consisting of a channel with a heated wall connected to a fan. This paper describes the equipment used and the measurement conditions, and summarizes the most important outcomes. The results will help to increase the accuracy of the determination of the efficiency for the tested compressor stages.
REFERENCES
1.
Richard
Matas
, Jan
Sedláček
, Václav
Čibera
. Preliminary study to the temperatures of the thermocouple probes affected by the environment of heated walls.
EPJ Web of Conferences
, 114
(2016
). DOI: .2.
Lukáš
Hurda
, Richard
Matas
. Uncertainty analysis of thermal quantities measurement in a centrifugal compressor.
AIP Conference Proceedings
1889
, 020012
(2017
); DOI: . ID 43921603; WOS: 000417391000012.3.
Richard
Matas
, Tomáč
Syka
, Lukáč
Hurda
. Experimental investigation and numerical modelling of 3D radial compressor stage and influence of the technological holes on the working characteristics, EFM
2017
, p. 384
–390
4.
Jan
Paroubek
, Václav
Cyrus
, Jiří
Kynčl
. The Influence of Outlet Stator Part Surface Roughness on the Performance of a Very Low Flow Coefficient Centrifugal Compressor Stage
, ASME Paper 96-OT-179 (1996
)5.
Jan
Paroubek
, Jiří
Kynčl
. The influence of impeller flow channel on aerodynamic performance of a centrifugal compressor stage
, ASME Paper 98-GT-40 (1998
).6.
VDI Heat Atlas
, Second edition, Springer-Verlag Berlin Heidelberg
2010
7.
Howden ČKD Compressors
, internal documentation of the testing compressor8.
J.
Mráz
(private communication).
This content is only available via PDF.
© 2018 Author(s).
2018
Author(s)
