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    User name jpchen

    Log entry time 15:43:15 on April 1,2008

    Entry number 229357

    keyword=Coolant flow vs fan frequency

    Fan frequency, heating power and coolant flow study:
    Keep T_LH2=20K, T_LD2=23K, both HP heater= 50-60 watts,
    LH2 60 Hz, LD 2 48 Hz, (15K coolant) flow= 15.5 g/s
    LH2 48 Hz, LD2 48 Hz, flow ~ 12.5 g/s
    LH2 36 Hz, LD2 48 Hz, flow ~ 11.5-12 g/s
    LH2 36 Hz, LD2 36 Hz, flow ~ 10.5-11 g/s.
    Doug decided to leave it at 36 Hz for both loops.