road load total, compressors reciprocating 1

[Venezueladq]

hello, I would like to know how ARIEL is carried out and takes into account to estimate the road load total en the cylinders of simple and double action...??

I´ll appreciate your help !!

 

[zdas04]

Compressors are not terribly heavy, so the "road load" is not much for an 18 wheeled trailer.

I bet you meant "Rod Load", but I don't know what you mean by

I would like to know how ARIEL is carried out

Are you asking how Ariel Performance works? Are you asking how to calculate rod load?

David Simpson, PE
MuleShoe Engineering

"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.

 

[Venezueladq]

zdas04,

yes, my question is about, how to calculate rod load total?

 

[pmover]

rod load is based on forces exerted on piston rod. the forces are inertial (acceleration of piston/rod x mass of piston + portion of rod) and due to the pressure difference on both sides of the piston. the pressure forces vary with crank angle and cylinder clearance. forces due to pressure are simple to compute (piston area x pressure).

Ariel program, if i remember, has the explanation included in the "Help" menu.

good luck!
-pmover

 

[Venezueladq]

pmover,


thanks you for the information, and yes, in the "help" menu includes the explanation about rod load for compression and tension, my question is about Rod load "TOTAL", they say that it is a sum between compression and tension ,but not algebraic, then how is this sum?

 

[pmover]

perhaps it will be best for you to read these two documents:

http://www.ge-mcs.com/download/orbit-archives/1q08_reciptips.pdf

docs.lib.purdue.edu/cgi/viewcontent.cgi?article=1248&context...

searching "recip compressor rod load" via google returned several articles.

hopefully someone will respond to your posting in the translation forum.

good luck!
-pmover

 

[Venezueladq]

pmover...

thank you very much for your help,the documents served me well, thank you

 

[BNiessing]

This is probably the best paper for understanding rod load and the different interpretations of that phrase that various compressor OEMS exercise.
Link

Ariel calculates internal gas load in both tension and compression, which is a part of the API-618 defined MACCRL rod load. Their total rod load really has no meaning.