User name Beise
Log entry time 11:15:01 on January25,2001
Entry number 55689
keyword=targetJiang Ping and I took some data on behavior of LD2 fan and its power consumption.
The JT valve was fixed at about 40%, and the
ESR temperature was constant at 13.0 K.
Data are here, followed by figure.
! % tach V I heat Wmax/min
! Hz Watts
18 45 23.22 3211 92 92
17 42 21.92 3233 130 210
16 40 20.64 2967 160 200
15 37 19.35 2744 216 240
14 35 18.06 2549 240 242
13 32 16.77 2400 244 244
12 30 15.48 2201 244 244
10 25 12.90 1822 255 255
12 30 15.48 2207 246 170
The last column is the over/undershoot immediately following the change
in the fan speed.
FIGURE 1
