R-141b

[ptrdav]

Hi guys

I previously asked you guys for some help with pentane tables, thanks Brian_UK for your response.

I have been unable to find any R123, R245fa, and so far n-pentane in South Africa. What I have found with similar properties is R141b. Has anyone had any dealings with this? It is generally used for foam-blowing from what I understand.

What I'm looking to do is build an Organic Rankine Cycle,
1. liquid refrigerant is pumped from atmospherics to a pressure of 10bar,
2. it is then superheated using solar water heaters to between 120 and 200°C,
3. after that it is passed through a turbine getting out mechanical power,
4. from there it is condensed back to a liquid and the process starts over

Anyone see any problems with using this fluid at the high temperature.

Can copper piping be used?

The pump that I'm looking to use has Viton seals, I'm a bit worried about the compatibility as well as the lubrication, what oils should I use, if any?

The MSDS doesn't give too much info

[ptrdav]

Anyone got any info?

[camerond]

I've got tables, and charts about R141b, but i've never had any experience using the stuff. i can send if you like

[ptrdav]

If you could that would be great, do you need my email?

[camerond]

I'll put all the info in an email for you. pm me ur email address

[Iceman1956]

We used this years ago after R11 was finished, as a replacement to wash out refrigeration systems, from memory the boiling point was about 32C. It worked very well as well. WQE did manufacture a unit to recover and reclaim it from the system. But again this was finished under the second phase out of refrigerant and we were unable to use this anymore. Did not find any suitable alternatives after that.

[ptrdav]

I'll put all the info in an email for you. pm me ur email address

Hi Camerond, not sure how to PM so I left a visitors message on your profile page. Not sure if you got it.

Anyway my email is petriedave(at)gmail.com, would really appreciate it if you could send me that info.

Thanks
Dave

[asproegypt3]

Hi



I was searching for anything to re-charge my R-123a So I found Something Maybe It Will Be More Useful For Your Issue And



otherwise it helps me too



Here





R-141b refrigerant


.rizkbrothers.com/Arabic/products.php?tn=cHJvX3Byb2R1Y3Rz&for=MzE%3D&main=0&sub=0&pro=31&lan=Ar

[mizun]

We use R245fa in our ORC turbines being made in India. The best people to guide you are from "Honeywell".

Yes you can use copper pipes if the pressure is not more than 10 bar.

Mizun ORC