What you have described is not useful. The experiment produces low grade (waste) heat as the output so the issue is confused when steam is included with the output as well as water. You want a mass of water with a starting temperature and an ending temperature and a volume. Forget steam, it’s too hard to measure. If your process requires producing steam, capture the output energy in the mass of water described earlier, measure, and get back to me when you have actual numbers. The whole setup is designed to generate confusion when simplicity is easily achieved. That is not how science proceeds.
Which is precisely what was done in the third 18-hour "no-steam" demo.