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  1. aberta

    ROTARY SCREW COMPRESSOR

    Can anyone tell me the how the typical efficiencies change of such compressors with speed. we have multiple units, all running at different speeds (1800, 2400,2900,3600). They don't provide the design flows, and are not off loading. All compressors are the same make and type.
  2. aberta

    Spiral Heat exchangers: We have sp

    Spiral Heat exchangers: We have spiral heat exchangers that cool flushing liquor which contains tar and other by products of coke oven gas. The flushing liquor (recirculated) is used to cool coke oven gas and itself is cooled by water. The liquor is the gas condensate. We experience fouling on...
  3. aberta

    ASME STAMP: W-L&S-L

    We have a liquid chlorine-water heat exchanger. The manufacureres stamp on the ouside of this small HX has letters W-L and underneath that it has S-L. ASME designation for W-L is Welded-Lethal service. Any idea what S-L represents. Thanks.
  4. aberta

    MOISTURE DROP OUT

    How much condensate would I collect by cooling coke oven gas from 80 degrees C to 30 degrees C. The gas has a molecular weight of 10.7. It is fully saturated at 80 degrees C. The coke oven gas flow is 32,500 NM3/HR, density 0.47 kg/m3, specific heat 0.4Kcal/NM3/C. I need this information to size...
  5. aberta

    COKING IN BENZENE VAPOUR

    We ahve a By-Products (BPP) plant in our integerated steel mill. The Coke Oven gas is cleaned at BPP and then exported to the Hot Strip Mill Furnace. BPP operations are (for Coke Oven Gas cleaning, Primary Cooler, Exhauster, Electrostatic Tar Precipitator, Ammonia Absorber (used Phosphoric...
  6. aberta

    CAVITATION-RECIRCULATION

    In which order would you place the following materials for best performance against impeller cavitation. The fluid being pumped is water from cooling towers and has some chloride treatment but chlorides do not come into the equation. The materials we are considering are: CD4MCU AL-Ni-Bronze...
  7. aberta

    WIND POWER VERTICAL SHAFT

    I am building a small windmill at my house this summer. it will be a vertical shaft machnine with a airfoil shape similar top the Gossamar human powered aircraft. The yearly averaged wind speed is 17.5 kM/h. I am not sure of the the following: 1. Is there an optimum number of wings for the wind...

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