Gas blender Toolkit, wrong calculation?

[daviddem]

Just a quick heads up: I updated the script on

https://thetheoreticaldiver.org/rch-cgi-bin/blender.pl

that it can now handle trimix blending as well.

Check this thread for more details about Gerg-2004 as applied to trimix blending: Real gas - the real deal

 

[daviddem]

I created quite big list of blender software here:

Gas Mixers & Tools

Some time ago i was searching for good Gas Mixer. I thought that i'll find some kind of list where i'll be able to pick what i need:) It wasn't so easy so i created my own list.Maybe it'll be handy for someone :p If anyone is using something different please leave a comment or PM me. On this...

scubaboard.com

IIRC PP Mixer v3.0 is using GREG 2004

Yes it does, it was one of the first to do so. Do you have a link to it, can't find it anymore?

 

[Rygar]

Yes it does, it was one of the first to do so. Do you have a link to it, can't find it anymore?

I've it on my disk but it required license. I got it directly from author Igor Pregelj.

 

[Agro]

Let's restart. I have an empty cylinder, I want to top off with oxygen and EAN34 to get 270 bar of EAN50.

Real Gas Blender sais
- 60.4 bar O2
- Rest EAN34

Meanwhile are there any other programs which are able to calculate this? Not air as top off gas but EAN34.

I do like Real Gas Blender but having one more tool is always great.

 

[Oleg G.]

Metric scuba tank info:
Scuba tank: 21.0 / 0.0 / 79.0 @ 0 bar, 24.0 liter, 0.0 barliter 0.00 mole 0.000 kg.
Desired gas mix: 50.0 / 0.0 / 50.0 @ 270 bar, 24.0 liter, 6441.9 barliter 269.14 mole 8.076 kg.

Initial temperature 15.0 C⁰

Check scuba tank: (21.0 / 0.0 / 79.0) 0.0 bar, 0.0 barliter, 0.000 kg, 0.00 mole

Add Oxygen 61.1 bar -> Up to: 61.1 bar in tank.
Add: Oxygen (100.0 / 0.0 / 0.0) 1561.5 barliter 65.25 mole
Check scuba tank: (100.0 / 0.0 / 0.0) 61.1 bar, 1561.5 barliter, 2.088 kg, 65.25 mole

Add EAN 34 208.9 bar -> Up to: 270.0 bar in tank.
Add: Topoff gas (34.0 / 0.0 / 66.0) 4880.5 barliter 203.89 mole
Check scuba tank: (50.0 / 0.0 / 50.0) 270.0 bar, 6441.9 barliter, 8.076 kg, 269.14 mole


Costs
Oxygen: 0.0020 * 1561.49 barliter = 3.1230 €
Total: 3.12 €

 

[PietroT]

I use this app for iPhone.

‎CCR Mixer

‎Tools for CCR Rebreather divers to calculate the optimal gas mix and gas blending application for Nitrox, Trimix and Heliair. Imperial and metric units. Functions: - Optimal CCR Mix (Best Mix, OC Bailout) - Mixing HeliAir - Mixing Nitrox (EANx) - Mixing Trimix (Tx) - Mixing Top up - Mixing...

apps.apple.com