In Rossi's E-Cat reactor we have essentially a low-quality boiler. Escaping steam bubbles have to rise through entering room-temperature water. This can cool the steam causing condensation. A decent simulation coul be arranged by boiing water in a flask with a glass tube and rubber tube. The outlet of the rubber tube could be placed beneath some room-temperature water and allowed to rise. If this were done in a second flask with a stopper with 2 holes the other hole could be used to compare flow velocity of cooled steam if it it fitted with the same diameter hose as the first flask. This velocity could be checked with a slip of paper or better yet with a velocity probe.
