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  1. sanchem

    Heat Exchanger Design Program

    Hey David, I could review your design and then we can discuss. I use ASPEN EDR though. Regards
  2. sanchem

    Pressure Reducing Valve - Flow Sizing

    Thank you Ashtree and LiitleInch for your kind suggestions. Here is what I did to estimate the flowrate. This is an existing line in an existing plant. We were using Liquid nitrogen at 9 kg/cm2g to purge a reactor but as this vessel is not designed for more than 8 kg/cm2g we have decided to...
  3. sanchem

    Pressure Reducing Valve - Flow Sizing

    @EmmanuelTop If the question is wrong or you require more inputs, do tell mate. I think I will have to finalize flow requirement and then size it accordingly
  4. sanchem

    Pressure Reducing Valve - Flow Sizing

    Hello Experts, In plant we have 1.5 inch liquid nitrogen line with pressure 9 barg. I want to reduce that pressure upto 6 barg using a pressure reducing valve. Vendor will require the minimum and maximum flow through PRV, how do I calculate it? Any spreadsheets will be highly appreciated.
  5. sanchem

    Tank Vent Sizing/Rating

    We have an empty tank of 4 m3 volume. Height = Dia = 1.6 m. Tank has a vent of size 1 inch. Tank doesn't have any PSV. Now, we are going to use this tank for storing a chemical X. In case of external fire scenario, I want to check if this 1 inch vent size is suitable for venting the vapors...
  6. sanchem

    Vacuum Pump Basics

    Thanks @LittleInch. I agree that I need to be specific but the reason I asked it here is that Google is a friend but it gives so many options, here with you all experts I can get specific and precise advice. Thanks for the link anyways.
  7. sanchem

    Vacuum Pump Basics

    @ LittleInch : That is always an easier option but I want to know how do I approach the basic calculations for any vacuum system. I would appreciate if anyone explains with examples or give some references.
  8. sanchem

    Vacuum Pump Basics

    I need to design vacuum pump for solvent recovery. I am a beginner in this field. How does one approach design vacuum pumps? Can someone explain the basic details of vacuum operations with reference to certain numerical calculations? please explain the significance of terms like : 1. mAx Vacuum...
  9. sanchem

    Use of Nm3/hr Unit

    Hey GUys EdStainless, zdas04, David Simpson, MortenA, Can Someone actually explain how to make use of this concept and what significance it has with some Numerical Examples? If you have any sums or numericals where this concept is used, please share it.
  10. sanchem

    Use of Nm3/hr Unit

    Hello everyone, Can someone explain the use of the term Nm3/hr for calculating air flow rate? When to use it and when to not while sizing equipment like scrubbers, fans, blowers etc? I see it used in many design problems. Plz explain the basics.
  11. sanchem

    Notification settings

    Hi, I wanted to know how do I enable email notifications here on eng-tips.com for all the threads under a specific topic. Suppose I want to subscribe Chemical Plant Design and Operations. Please help.

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