(private pages, R. van Weelderen))

IT-HXTU Test Program

Index

• Results
• Objectives
• Basic parameters
• Status report of test to LHC Machine Advisory Committee November 2000 (pdf).
• Status report of test to LHC Machine Advisory Committee November 2001 (in progress)
  preliminary agenda
  announcement 23-08-2001

Results

Results of the campaign from Christine Darve and Yuenian Huang from about 03/08/2000 until 18/08/2000:

HX exchange coefficients,

various other graphs: [W], [W/m],

Temperatures offset measurements by Enrique Blanco:

recalibration.xls

32mbar 32mbar measurements and related evaluation.

Additional results from the second campaign, with pressure sensor replaced and differential pressure sensor added:

16mbar tab separated data file

4x0W,

4x10W,

4x20W,

Note: 4x40W at 16mbar did not succeed. The saturation pressure could not be kept, and the pressure went up to 16.5mbar +/- 0.5mbar.

16.5mbar +/- 0.5mbar tab separated data file

4x40W.

18mbar

19mbar tab separated data file

4x10W.

21mbar tab separated data file

4x10W,

85% of nominal: Q1=55.25W, Q2a=29.75W, Q2b=46.75W, Q3=46.75W,

Note: 100% of nominal at 21mbar did not succeed. The saturation pressure could not be kept, 85% of nominal was measured instead.

24mbar tab separated data file

4x40W,

4x55W,

4x70W,

1xnominal: Q1=65W, Q2a=35W, Q2b=55W, Q3=55W,

1.33xnominal: Q1=86W, Q2a=47W, Q2b=73W, Q3=73W,

semi-ultimate: Q1=0W, Q2a=0W, Q2b=87W, Q3=160W.

Note: experiencing a power limit on Y1203 of 86W.

32mbar tab separated data file (added with respect to 1st run nominal)

4x70W,

1xnominal: Q1=65W, Q2a=35W, Q2b=55W, Q3=55W,

1.33xnominal: Q1=86W, Q2a=47W, Q2b=73W, Q3=73W,

semi-ultimate: Q1=160W, Q2a=87.5W, Q2b=0W, Q3=0W.

semi-ultimate: Q1=0W, Q2a=0W, Q2b=87W, Q3=160W.

index

Objectives

1. Verify the heat exchange at various mass flows and saturation temperatures
2. Verify the pressure drop, ΔP, over the lenght of the corrugated heat exchanger pipe

index

Basic parameters

index