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Recent content by Snickster

  1. Snickster

    Guidance for industrial refrigeration projects

    Carrier also has training courses available. Not sure how much on refrigeration: https://www.carrier.com/carrieruniversity/en/us/training-courses/courses/
  2. Snickster

    Guidance for industrial refrigeration projects

    Here is another good resource for refrigeration available on the internet.
  3. Snickster

    Guidance for industrial refrigeration projects

    Trane has huge amount of learning courses and materials. Attached are some older learning manuals on refrigeration I had. The link to the site is below. I am not sure if they still produce the attached manuals but there is a lot of learning materials on their site...
  4. Snickster

    Guidance for industrial refrigeration projects

    How much do you know about HVAC and refrigeration already. It depends on how much you already know and exactly what you want to learn.
  5. Snickster

    Help better understand the physics of low refrigerant charge HVAC and coil freeze up.

    Like all liquids, the temperature that refrigerant liquid boils varies with the pressure. The higher the pressure in the surrounding atmosphere, the higher the boiling temperature. For instance water boils in a pot on the stove at 212 deg F in atmospheric pressure of 14.7 psia. The water will...
  6. Snickster

    gauge pressure

    Say you have a header with pressure at 9 bar. This gives you an allowable pressure drop of 1 bar in the pipe between the header and the steam booster. Now you must design for the 1 bar pressure drop at a design flowrate. What is the design flowrate of the booster is what is also needed to...
  7. Snickster

    Chilled Water Coil – Confusion About Delta T and Heat Transfer

    Refer to the attached chilled water manual.
  8. Snickster

    Chilled Water Coil – Confusion About Delta T and Heat Transfer

    For example, with water going from 10°C in to 12°C out or from 20°C in to 22ºC out, the heat transfer comes out the same. That doesn’t seem intuitive to me, especially if the air temperature around the coil is constant. So my questions are: How is it possible for the same amount of heat to be...
  9. Snickster

    pumped flow creating negative pressures to eliminate small pump

    The pressure at the junction will be positive and flow will be towards the biofilter. Only way to reduce pressure at junction is to increase velocity enough to cause a vacuum by reducing the flow area at the junction, This will cause a high pressure drop in main line and introduce undesirable...
  10. Snickster

    hydraulic grade line

    Now that you showed the whole page I agree. With slack flow the hydraulic grade line will follow the pipe after the peak, then follow the dotted line, assuming the pipe below the dotted line fills up full and terminal hydraulic head is at the end of the dotted line. Then they are showing on...
  11. Snickster

    how to apply wind load to a tall tower in ANSYS?

    Wind load as a function of height can be determined by method in API 2A (WSD) attached outdated version.
  12. Snickster

    hydraulic grade line

    I don't think so. I think it just represents where full pipe flow exists. Above the dashed line is open channel flow just as it indicates in the diagram. I believe the pressure curve is the thick line as shown. Up to the valve the energy of the fluid is still the entire static head at the...
  13. Snickster

    Standard Flow rate at an oil terminal for gasoline and diesel

    See the attached old Mobil Guide for guidance.
  14. Snickster

    hydraulic grade line

    This is my interpretation. Pipe flows full upstream of the peak. Pump has just enough discharge head to get the flow over the peak. Hydraulic pressure curve is sum of pump discharge pressure plus static head plus velocity head minus friction losses. Once flow reaches peak all head is in...
  15. Snickster

    Pumps with VFDs

    That is not the curves for the 2900 RPM pump speed as indicated on the nametag. That curve is for a 3500 RPM pump speed as indicated on the curves at the top. You need to first locate 2900 RPM pump curves. I looked on KSB website link below and could not find the RPK model. Perhaps it is an...
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