I asked Rossi to clarify where the steam goes. I heard it went out of the
window but  someone else told me no, the hose went int a bathroom.

Here is my message to Rossi and his response:

Jed Rothwell
January 31st, 2011 at 2:31 PM

A person who attended the January 14 test told me that the steam hose from
the machine went to a bathroom. Was the end of the hose pushed outside of a
window? Was it placed underwater in a sink?

How did you keep the bathroom from becoming a sauna?

I have seen large steam generators begin tested in a factory in Georgia.
They are used in carpet manufacturing. They range from 10 to 100 kW. To test
them, the operators put the steam hose into a steel drum filled with 200 L
of cold water, to condense the steam. They record the water temperature to
measure enthalpy. If you do additional tests, you might want to consider
using this technique.
- - - - - - - - - - - - - - - - - - -
Andrea Rossi
January 31st, 2011 at 4:30 PM

Dear Dr Rothwell:

The steam pipe was not going to a bathroom, but to a sink in the wall besise
the test room; the sink was sealed to avoid exit of steam ans, as you said,
a collective sauna.
The technique you suggested needs not just a drum with water, it implies a
heat exchanger; with a heat exchanger it can work.
Warm regards,
Andrea Rossi

- - - - - - - - - - - - - - - - - - -

[My response, not published yet. This refers to the Hydrodynamics factory,
in Rome, GA]

Jed Rothwell
Your comment is awaiting moderation.
January 31st, 2011 at 5:29 PM

You wrote: “The steam pipe was not going to a bathroom, but to a sink in the
wall besise the test room; the sink was sealed to avoid exit of steam ans,
as you said, a collective sauna.”

Ah, I see. So the steam condensed into the sink and the water ran down the
drain.

“The technique you suggested needs not just a drum with water, it implies a
heat exchanger; with a heat exchanger it can work.”

Actually, it worked pretty well. These were short tests, of 15 to 30
minutes. If you run the test too long of course the water gets too hot. In
these tests they let the temperature go from 20 deg C up to around 60 deg C,
to capture about 8 million calories (33 MJ).

Above 60 deg C the steel drum starts to radiate too much heat and the
results become inaccurate.

The water temperature was recorded and the water in the steel drum was mixed
with a large piece of wood to ensure a uniform temperature.

The difficult part is to safely dump the water after the test. They used a
fork lift to carry the drum outside and pour it into the parking lot.

Regarding your upcoming 1 MW reactor. Will that produce steam for a factory
(process steam)? Or for an electric generator? If it is for process steam
that must be a large factory! In the Georgia carpet factories a 100 kW
heater is large.

Reply via email to