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  • Users: ECD40
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  1. ECD40

    Water Hammer

    Does anyone know how the 0.070 factor in the Water Hammer pressure formula is derived? I get a lower number when introducing the water density and 'g' into the formula to get the units to cancel out to lb/inch squared. Please see attachment.
  2. ECD40

    Vertical Slurry Pipelines

    We are planning to pump solids in a slurry form from a deep underground mine. The slurry particles will have a top size of 4.5 mm and a bottom size of -300 mesh. A laboratory test will be restricted to using a 2 inch diameter vertical pipe and centrifugal pump with a maximum lift of 50 feet...
  3. ECD40

    ''Mother Lye'

    I'm in the process of applying for a patent with the US Patent Office for a hydraulic transportation system. There is a UK patent issued in 1922 that refers to Mother Lye as the transport medium. This is causing the USPO Examiner some concern. Does anyone know the chemical composition of...
  4. ECD40

    Heat Transfer

    Hello All, I have a heat transfer problem of water flowing into and out of a large tank. This is an application on a mining project in northern Canada and how the issue impacts on the building HVAC design. We have a pipeline transporting 2,300 USgpm of mining waste in water from some...
  5. ECD40

    Water freezing in an Overland Pipeline

    We have a problem to solve with an overland water pipeline in very cold weather (minus 40 degrees). The pipe will be a 14" diameter DR11 HDPE material and 19,000 feet long. The flowrate will be 2,500 USgpm at a velocity of about 7.3 fps. The question is whether or not to insulate the pipe...
  6. ECD40

    Buried Steel Pipeline

    We will be installing a 14" diameter steel pipeline with a yield strength of 42,000 psi to carry a fluid of 1.2 SG for a about 5 miles, all below the surface. How do we link the field welding procedure and inspection of the field welds to the allowable design strength of the pipe. The static...
  7. ECD40

    Viscosity of saturated brine under pressure

    Does anyone have information of the behavior of saturated brine when put under high pressure. At atmospheric pressure the dynamic viscosity of the brine is 1.297 centiPoise and an SG of 1.180 at 57 degrees F. This brine will be subjected to a pressure of 190 bar at the same temperature and SG...
  8. ECD40

    Saturated Brine

    Hello all, I have an unusual problem regarding the properties of saturated brine containing both KCl and NaCl. This application is at a minesite, where a continuous flow of saturated brine has to be delivered down a 1,000m deep mine shaft from the surface. The fluid temperature at the surface...
  9. ECD40

    gravity fluid feed to an underground mine down a vertical mineshaft.

    I'm looking for some hydraulic flowrate help with a problem that I'm trying to solve. The problem is that a fluid of 1.24 specific gravity, has to be delivered down a mine shaft which is 3,300 feet deep, but I don't want to build any static head in the pipe. Therefore, it needs to be designed...
  10. ECD40

    Overhead Crane Problem

    thread404-380343 From ECD40. For those of you that were with me discussing the high lift overhead crane problem that would not fit through the lifting wells in the high rise structure, it is now resolved. We turned the drum through 90 degrees and increased the drum diameter, still maintaining...
  11. ECD40

    Overhead Crane Conversion from CMAA to a Winch

    We have a CMAA standard 20 tonnes capacity overhead crane with a 4 x 2 rope reeved drum, which is 6 meters long x 487 mm in diameter x 18 mm diameter rope. Unfortunately, the fleet angle of the crane hook ropes is such that the crane hook cannot be lowered through a lift well located at about...

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