×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

specific gravity

specific gravity

specific gravity

(OP)
Sorry for this stupid question.  What is specific gravity?  What is the physical meaning if a fluid has a specific gravity of 0.835 Max at 15 deg Celcius?

RE: specific gravity

Specific gravity is the ratio of the density of the substance in question to water.  Since water is still pretty close to 1000 kg/m3 at 15C, a specific gravity of 0.835 simply means that its density is 835 kg/m3.

The max likely means that the fluid's density varies somewhat (like for diesel which is a mixture of different hydrocarbons) but won't exceed 835 kg/m3.

RE: specific gravity

(OP)
Thanks TD2K, you are so kind!

RE: specific gravity

quote:

Specific Gravity is,
The ratio of the weight of anything to the weight of water.
For example
water is 8.34lbs/gal
its specific gravity is 1.

HCL is 10.0 lbs/gal
its specific gravity is
Specific Gravity of HCl = Weight of HCl (/) Weight of Water = 10.0 (/) 8.34 = 1.2


RE: specific gravity

mufasa!

ain't it specific weight?

Regards,



Truth: Even the hardest of the problems will have atleast one simple solution. Mine may not be one.

RE: specific gravity

One more point that I missed last night, specific gravity is also used with gases.  

For a gas, it's almost always the ratio of the gas's molecular weight to air (I use 28.96) but I've seen it sometimes referenced as the density of the gas at its temperature and pressure divided by the density of air at the same temperature and pressure.  The latter is much less common in my experience.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources