Design pressure & Temperature for pumps

[ravisasi]

Could you please explain how to fix the design pressure of the pumps & Compressors
What is the criteria for selection of the design pressure
Please explain
or
If you have excel related sotwares please provide with required information

[ravisasi]

Please provide some guidelines

[ravisasi]

Please help me in this matter

[TOLGAUS]

1. You may check the spec of the piping which you want to install. This will be your reference point.
Ai: 20 barg
Bi: 50 barg
Di: 150 barg
Fi: 225 - 250 barg
G,Hi: over 300 barg

2. Every pump/compressor has a max pressure head point. You may check the max possible pressure you can receive from upstream system and sum them up. in this, you may check also the pump curve to see the possible flow rates. Kind of double assessment just to be sensible.

3. If a plunger type pump (frequently used for chemical injection), even if it may have a very relatively low operating pressure, when it is blocked downstream, (e.g. it may even achieve 350 barg depending on the pump characteristics.), you may theoretically need very high design pressure pump casing. Note: normally a PSV type return valve is installed downstream to divert the excess pressure back to its source (e.g. atmospheric feed tank)

If you can give me more details on your case, I may be more helpful and precise.

Just to note, when deciding design pressure, the first to guarantee the overpressure protection of the pump and the system. At this point, it does not matter on which condition it will operate.

[ravisasi]

thanx for ur reply
Is there any guidelines

[TOLGAUS]

I really do not know. But there must be somewhere in API and/or ASME for mechanical design practices.

[TOLGAUS]

check below:

Engineers’ Guide to Pressure Equipment The Pocket Reference Clifford Matthews

Product Description
The Engineers’ Guide to Pressure Equipment incorporates both the technical and administrative aspects of vessel manufacture and use, introducing the basic principles of pressure equipment design, manufacture, quality assurance/inspection and operation during its
working life. Engineering data from a wide range of sources is included. The author guides the reader through the most commonly used current and recent pressure vessel codes and standards.

The Engineers’ Guide to Pressure Equipment is an invaluable reference for engineers, technicians and students with activities in the pressure equipment business.




COMPLETE CONTENTS:
Websites: Quick reference
Pressure equipment types and components
Basic design
Applications of pressure vessel codes
Manufacture, QA, inspection and testing
Flanges, nozzles, valves and fittings
Boilers and HRSGs
Materials of construction
Welding and NDT
Failure
Pressure Equipment
Directives and legislation
In–service inspection
References and Information Sources.


Synopsis
Including engineering data from a wide range of sources, "An Engineer's Guide to Pressure Equipment" provides an essential introduction to the technical and adminstrative aspects of vessel manufacture and use, covering the basic principles of pressure equipment design, manufacture, quality assurance/inspection, and operation during its working life. The author competently guides the reader through the most commonly used current and recent pressure vessel codes and standards. Pressure equipment has been subjected to an iterative development process that now makes it one of the most complex technical areas of mechanical engineering. The technology of pressure equipment continues to expand rapidly and recent developments in The European Pressure Equipment Directive, UK Pressure Systems Safety Regulations, and technical codes and standards are resulting in exciting changes within the industry. Key features of the volume include: concise, essential information about pressure equipment; compact and easily accessible format; fully illustrated; and core technical and legislative data.

"An Engineer's Guide to Pressure Equipment" fulfils a key role in presenting up-to-date information on pressure equipment in a practical and easy to use format. It should be a valuable source of reference for pressure equipment designers, manufacturers and end-users.

[link Point to another website Only the registered members can access]

[f81aa]

Thank you, TOLGAUS