I'll give it a try. Many of us were confused about this - and early in the game we didn't realize what the Single Cavity Microwave Heating Unit (SCMHU) really was. The SCMHU consists of one heat exchanger, one magnetron connected to a controller, etc. Early 2010 and into the spring and summer, Robert was working on the SCMHU perfecting the efficiency. The SCMHU went through many development stages. As they experimented with different materials and shapes for the heat exchanger they realized they also needed slightly different variations on the magnetrons. This process of experimentation went on for many months - and investors were told along the way when Robert was "excited" about some development success. I'm sure it was a long, tedious journey for him.
The SCMHU is what was sent to the UL lab for their consultation on safety design issues.
The Multi Cavity Microwave Heating Unit (MCMHU) consists of 4 SCMHUs to create the first point-of-use water heater. This is what Robert and Andrew presented to the attendees at the meet and greet in Vermont. Robert claims the SCMHU efficiency exceeds their expectations. Also, he believes putting 4 of these together will achieve the efficiency needed to compete with the current electric tankless water heaters on the market.
This is why so many are SCREAMING for efficiency data. He has the last part now (maybe) and should be able to tell investors something. Because this has taken so long many have lost patience with this process. I've gone back and forth really wanting the water heater to be efficient and successful. I hope it is.
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