[gifvenut]

If you read the article, the problem is explained quite well:

> In my simple mind, the Finnish Sauna is just a type of Heat Treat Furnace or Oven that you load humans into and try to provide them with three characteristics. (1) not oversaturate their lungs with their own Carbon Dioxide waste products from being enclosed in a sauna with poor ventilation and limited fresh air volume changes (called Air Mixing in the study), (2) create an enjoyable Temperature distribution within the sauna environment (called Temperatures in the study) and lastly (3) provide a well distributed Ladled Steam Humidity cloud throughout the Sauna (called Air Condition in the study). Basically, everything you would expect for a good Finnish Sauna experience.

The rest of the article explains the ventilation needed for this.

[jaktet]

That’s not an explanation of the problem though, those are just characteristics of a good sauna.

I don’t see the problem defined well in the article, but it can mostly be surmised from the intro:

> Malcolm has analyzed the Finnish 1992 sauna ventilation study profile, applied his knowledge and experience as a 45 year engineer to test and better understand sauna ventilation in his own backyard sauna.

They wanted to test and understand the sauna ventilation in his backyard sauna and used a 1992 research paper as a reference. I can only assume this venture started because they were dissatisfied with the ventilation in their backyard sauna.