New Energy Research Laboratory Device
and Process Testing Update
Published in IE Volume 6, Issue
#31 May, 2000. By Ed Wall.
The heart of the Hydrosonic Pump is a spinning
aluminum cylinder immersed in water with indentations drilled into
its rim, which cause cavitation of the water due to the extreme
shearing forces on the water. Anomalous heat production has been
claimed for this device.
The Hydrosonic Pump unit testing has proved to be
more challenging than expected. Providing power proved to be time-consuming.
We still have not tried turning on the Hydrosonic Pump motor at
our new laboratory, but we expect no problems. This will have to
be done at night, as required by the power company, just in case
the motor does cause a problem for them.
An ideal testing situation would be one in which the
test could be run for an indefinite period without affecting its
environment temperature, where the inlet water temperature and flow
rate would be constant. This might be realizable if we had a pair
of huge water tanks in a temperature regulated environment, but
that is impractical.
Besides, these tanks would have the problem of changing
pressures as the water level changed.
Ten gallons/minute is a good target range for testing,
according to Kelly Hudson of Hydrodynamics, Inc.1-7 The
water to our building has a flow rate that is closer to one gallon/minute,
so the idea of a closed system utilizing an auxiliary pump and radiator
made a lot of sense (see diagram).
It would allow steady-state conditions to be attained for an extended
period if the heat could be removed from the system at a steady
rate. The room in which we test has a high ceiling, and we can open
two garage doors, so the air around the device could probably be
maintained at a pretty constant temperature for many hours.
A fantastically good deal on an unused large surplus
brass centrifugal pump, worth about $2000, came along and was too
hard to resist at $165, but had a flow rate closer to 80 gallons/minute.
This seemed like a minor problem, because we could divert most of
the output flow back to the input and use a valve to control the
flow rate delivered to the Hydrosonic Pump.
We have a fairly precise Dwyer water flow meter that
is rated at 2% of full scale (10 gallons/minute) accuracy, along
with a totalizing water meter (total quantity measured) that has
good resolution. After a rather interesting plumbing adventure,
we were able to turn on our circulating pump and have it pump at
different rates through the water meters. A 9% difference was found
between the two meters, so another reference method is a must. We
intend to divert the flow into a barrel while drawing water from
another barrel and measure the time it takes to pump a known volume.
This change of configuration may affect the flow rate, but this
is not a big problem, because the two meters' flow rates will be
recorded during barrel volume and timing measurement. By running
the pump at different flow rates, a calibration of the flow meters
can be performed.
For a while, it looked like we would be generating
Hydrosonic data soon, but an unexpected complication happened. The
inlet side of the pump is at a lower pressure than atmospheric.
The pump is pumping so vigorously that it heats up the water rapidly.
There are only about four gallons of water circulating. That is
not a big problem, because we can blow air through the radiator
and keep it cool. A likely problem will occur when we turn on the
Hydrosonic Pump and the water gets hot. To see what the auxiliary
pump will do when the water gets hot, we let the auxiliary pump
run for a while and heat the water. As water heats, its vapor pressure
increases, so it can boil at the pump inlet, where the pressure
is the lowest in the circuit.
A rapid thumping sound developed at around 55°C and
gradually slowed in frequency while increasing in intensity as the
temperature rose. When the water temperature approached 60°C, it
sounded like a water hammer, then suddenly quiet. The water flow
stopped completely as well. This was a big surprise, and it soon
dawned on us that it would be a much bigger surprise if the Hydrosonic
Pump had been allowed to heat the water to this range. The sudden
cessation of flow would mean that the water that was in the Hydrosonic
Pump would suddenly boil, producing superheated steam, which reaches
high pressure, and would probably destroy our radiator and plumbing,
and could scald an unwary witness. There is a pressure relief in
the form of a radiator cap, but a surge of pressure like one caused
by a loss of water flow would be far too much for that.
So, the plumbing was reworked with a larger diameter
pipe and hose in order to maintain a higher pressure at the pump
inlet. This seems to have had its desired effect, as the flow velocity
is much reduced at the pump inlet, and we were able to run the temperature
up to above 75°C when the seals failed on one flow meter and the
other one just stopped working. The readings on the meters diverged
at elevated temperatures, so calibration of both must be performed
at a range of temperatures.
The best way to proceed now is to provide sufficient
air flow through the radiator to keep the temperature of the water
flowing through the flow meters at a low level, then calibrate flow
measurement in that temperature range. We would like to try a range
of operating water temperatures, and perhaps pressurize the system
a little (with an inert gas) to see if any affect on energy efficiency
We are continuing development of the Dash cell
experiment apparatus8 and can report that cutting Pyrex
is something that should be approached carefully. The recombiner
is held in a chamber made from Pyrex and Teflon. The recombiner
itself is the same catalyst used in the Case cell, manufactured
by United Catalysts, Inc., which Dr. Dash finds to work very well.
A Thermonetics Seebeck Envelope Calorimeter (SEC)
was ordered, and is expected to arrive soon. We actually began construction
of our own SEC, but the potting compound, which was advertised specifically
for thermocouples, etched out the solder from our device. This was
a serious aggravation, as our SEC contained over 1500 thermocouples,
and its performance was quite good (sensitivity: 0.045 V/W; noise
floor of 1 mV without thermostatic reference; very low heat source
position sensitivity). Another SEC is under construction with a
different type of potting compound, epoxy. A nichrome wire heater
with a precise resistance was made for use with a wall-mounted power
supply in a feedback controlled water heater for the SEC thermostatic
reference, but the same potting compound destroyed that as well.
The 'condensation' that was reported in IE No. 29 on the
inside of Dash's SEC turned out to be leakage from the water jacket.
It has been repaired and their group is back to producing data.
Case Cell Retrospective
In the process of testing a proprietary device,
we discovered that the valve used in the Case catalytic fusion cell
work was not that good for vacuum work; it may have admitted considerable
oxygen. It is hard to tell. Better valves are an absolute requirement.
- Huffman, M. 1995. "From a Sea of Water
to a Sea of Energy? An Adventure in Hands-on Experimental Science,"
Infinite Energy, 1, 1, 38-44.
- Rothwell, J. 1996. "Notes on the Talk
by James Griggs of HydroDynamics, Inc. at the Cold Fusion and
New Energy Symposium, January 20, 1996," Infinite Energy,
1, 5/6, 25-27.
- Mallove, E. 1998. "Device and Process
Testing Updates," Infinite Energy, 4, 21, 14-15.
- Mallove, E. and Rothwell, J. 1999. "Testing
of the Hydrosonic Pump Rotary Cavitation Device," Infinite
Energy, 4, 23, 28-29.
- Wall, E. and Mallove, E. 1999. "Device
and Process Testing Updates," Infinite Energy, 4,
- Wall, E. and Kooistra, J. 1999. "Device
and Process Testing Updates," Infinite Energy, 5,
- Wall, E. 2000. "Device and Process Testing
Update," Infinite Energy, 5, 29, 52-53.