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  1. Ally0138

    Relief Valves for Still in Spirit Industry

    Hi all, A client in the spirits industry has asked me to review the sizing basis for their pressure relief valves on their stills. I've done some quick rough checks and I am concerned that their existing relief valves may be undersized. Some specfic questions I have, before I get into a more...
  2. Ally0138

    Underpressure of Submerged Tank

    First, thanks for the responses LittleInch, itsmoked, and georgeverghese. I appreciate your input. LittleInch: 1. I agree. The lowest pressure will be at the pump suction, where there could be a risk of cavitation. But how can I go about estimating the minimum pressure in the tank? I'm...
  3. Ally0138

    Underpressure of Submerged Tank

    No. Real life.
  4. Ally0138

    Underpressure of Submerged Tank

    Hi, I have tank which consists of an inner flexible bladder contained within an outer metal shell. The whole tank is submerged in water. The inner bladder contains oil which is transferred in / out via a pump located above the waterline, circa 3 m above the base of the tank. The cavity...
  5. Ally0138

    Volume and Wetted Area of a Partially Filled Horizontal (Conical) Frustum?

    bimr, Thanks for the response, but the online calculator you linked to doesn't actually give me what I need. The formulae given there are for the total surface area and total volume of a frustum. I need to calculate the liquid volume and wetted area of a partially filled frustum on it's side...
  6. Ally0138

    Volume and Wetted Area of a Partially Filled Horizontal (Conical) Frustum?

    Thanks for the response jari, I don't quite follow your equations, but that may just be because we are using different nomenclature, or maybe my original problem statement wasn't very clear. Let me attempt to clarify: The diagram is meant to show a right conical frustum (a parallel...
  7. Ally0138

    Volume and Wetted Area of a Partially Filled Horizontal (Conical) Frustum?

    Hi, Does anyone have formulae for calculating the following: [ol 1] The volume of liquid in a partially filled horizontal conical frustum? The corresponding 'wetted area' of the frustum? [/ol] Refer to below diagram. I wish to calculate the volume of liquid and the wetted area of the frustum...
  8. Ally0138

    API PSV Sizing on Tube-side of Shell & Tube Heat Exchanger

    Thanks for the response Latexman. First, what makes you assume that the details of the heating medium is not proprietary information? In this case it is, which is exactly why I withheld that information. Suffice it to say in this context it is a synthetic heat transfer fluid used as an...
  9. Ally0138

    API PSV Sizing on Tube-side of Shell & Tube Heat Exchanger

    Hi guys. Can anyone help me out with the following?: I have been asked to size a relief valve for the tube-side (process side) of a shell and tube heat exchanger. This particular exchanger has hydrocarbon gas on the tube-side, and a heating medium on the shell-side. The relevant sizing cases...

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