Steam Loss in Distribution Network.

[murphymok]

Hi all,

I am analyzing the steam loss in our steam distribution piping network. I have looked into the metering loss, insulation loss and steam quality loss, but they contribute a very small amount in comparison to the total line loss. Does anyone have any suggestions or ideas?

Thanks in advance.

 

[StoneCold]

Murphymok
Are you talking about pressure drops? Steam loss due to condensation in the piping? As in we produce 1000 kg/hr of steam and when you sum up the end users of steam we only get 500 kg/hr of useable steam.
If you could define the problem a little better we could help you more.

Regards

 

[25362]

Only an idea: steam traps passing steam ?

 

[davefitz]

Is your indication of flow element flow corrected for pressure + temperature correctly?

 

[murphymok]

Hi all,

We monitor the temperature and pressure closely and apply 0correction factors. However, when I look at the steam sent out from the plants and the total sum measured at the customers, there is a huge steam loss, 10-15%. We regularly check the distribution networks and manholes to ensure proper insulation and no leaks. There are 3 losses I am thinking: condensate in piping, piping redundency and steam quality.

Any suggestions will be greatly appreciated.

 

[davefitz]

Is there any reason to suspect the customer's ethics? A slight modification to their flow element can result in a lower indicated flow than they are using. All it takes is an electric drill during a scheduled pipe shutdown.

 

[EdStainless]

There is no change is steam quality, it is all saturated isn't it?
The condensation is the big factor. But "25362" had a good comment, bad traps. A hand full of small vents 24/7 can sure add up to a lot of lost steam.
If you are looking for 10% you are getting down to the fine points. I was expecting you to say that you were loosing 40%.

= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.

http://www.trenttube.com/Trent/tech_form.htm

 

[friartuck]

I assume you will have a boiler feed tank or HOTWELL. This will have a vent to atmosphere which loses steam.
Flash steam from processes will also affect the condensate line pressure and the pressure/flash steam in the hotwell.

If you use flash steam recovery, this will reduce

go to SPIRAXSARCO.COM


Friar Tuck of Sherwood