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    ashishrangari1's Avatar
    ashishrangari1 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jul 12, 2010, 11:37 PM
    Engine main bearing temperature
    In all of our DG sets ( capacity 6 MW Wartsila make) we are facing problem of high bearing temperature during winter season and during night time only. In day time the temperatures are normal in the range of 90 Deg C but in night time the temperatures increases to more than 100 deg C.
    The exhaust gas temperatures also increases by 15- 20 deg C.
    Rest all operating conditions are same. No change.
    What can be a problem
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #2

    Jul 12, 2010, 11:53 PM

    Can you correlate the bearing temp increase with dewpoint temperature? i.e. increasing dewpoint temp means increasing bearing temps

    Don't use relative humidity.

    As the dewpoint rises, the ability to transfer heat to surroundings is impaired.
    kryostar's Avatar
    kryostar Posts: 108, Reputation: 11
    Junior Member
    		  
    #3

    Aug 3, 2010, 09:24 PM

    What about oil viscosity,or cooling thermostat
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