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Recent content by Process Mike

  1. Process Mike

    Air in thermal fluid bitumen tank coil

    @katmar thanks for very usefull information . We performed our test with cold water . Not to forget that real situation will be with thermal fluid with viscosity around 80 SSU ( 14 cSt) while visosity of water is around 30 SSU ( 1 cSt) So internal liquid shear tension should create a force...
  2. Process Mike

    Air in thermal fluid bitumen tank coil

    each coil is constructed with 25 pieces of 7 m long piping with U bends to have back and forth flow direction , (se description from the beginning of this post ) so if we slope in one direction we counter slope in the other ... this would be useless at the end ...
  3. Process Mike

    Air in thermal fluid bitumen tank coil

    Final test done with 2 in pipe sch 80 A 106 , with many high points artificilally created on a bench test , we could fluh air out the system (the artificial coil )with fluid speed ( cold water ) around 1 meter / second . This will give us good milestone to go ahead with our project , thanks...
  4. Process Mike

    Air in thermal fluid bitumen tank coil

    @georgeverghese === demolition is not an option ( $$) . We can flush air ( once a year) with medium fluid speed . We try to calculate what spped would be optimal
  5. Process Mike

    Air in thermal fluid bitumen tank coil

    We are goin to make a real test tomorrow in the client' installation with water at different speed and see if we can correlate with empirical calculation Thanks
  6. Process Mike

    Air in thermal fluid bitumen tank coil

    @katmar === this manual is for gravity driven drinking water pipes = not for forced under pressure flow Thanks ciao Process Mike
  7. Process Mike

    Air in thermal fluid bitumen tank coil

    @ Littleinch ==== 0.6 m/s is very low , I doubt it will eliminate air bubles in horizontal pipes ... PLZ could you be more specific about where this recommendation comes from . I need to investigate more ... @danschwind === FROUDE number is mostly used for open gravity flow like drainage or...
  8. Process Mike

    Air in thermal fluid bitumen tank coil

    Recently , a plant manager was suspecting that trapped air in thermal fluid bitumen tank coil could significantly impact the heat transfer performance . He might be right depending the air amount inside the heating coil : DATA : 2 in sch 80 , A 106 coils , 500 ft lenght , butt welded with...
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