Please review the numbers in the paper, which is here: http://lenr-canr.org/acrobat/RouletteTresultsofi.pdf
For experiment 4, the excess heat lasted 70 days. The total experiment duration was 123 days. If there was a storage phase, it lasted 53 days. This would show up as an endothermic reaction, which would reduce power output by much more than the exothermic reaction that followed, because it would be shorter. Any calorimeter that can measure a positive exothermic reaction of X watts can measure an endothermic reaction of -X watts equally well. Energy storage is ruled out. - Jed