Earthtech Offer
Date: Thursday, August 04, 2005 @ 20:24:18 GMT
Topic: Testimonials


In a message dated 8/4/2005 12:26:25 A.M. Central Daylight Time, W.S. Alek (www.intalek.com) writes:
"I ran the ZPOD device and observed 110% to 120% OVER unity!"

If real, we're in a position to provide for independent verification and a report, using a calorimeter originally built to test cold fusion cells. The offer and description that we recently posted on a CF site gives details.

Cheers,
Hal Puthoff

Author: Scott Little little@earthtech.org

The Offer:

Earthtech hereby offers to test promising cells in MOAC free of charge. We feel that the opportunity of observing a genuine excess heat effect in an accurate calorimeter is well worth the time, energy, and money we will expend in the process. A promising cell is one that typically shows at least 0.20 watts of excess heat and is reasonably repeatable. The terms "typically" and "reasonably" are open to interpretation. Our ultimate goal is to identify CF technology that actually works and then to help develop it into a useful energy source for mankind.

This discussion group seems like a good venue for the announcement of a new high-accuracy calorimeter at our lab. Ambitiously dubbed "MOAC" (Mother Of All Calorimeters), this instrument is specifically designed to test cold fusion (CF) cells operating in the 0-20 watt range.

A brief description of the system:

The calorimeter chamber (CC) is relatively roomy and the space available for the cell is a rectangular prism volume about 24cm high, 14 cm wide, and 24 cm deep. There are three optical ports which enter the chamber. One of these is fitted with a borescope which permits inspection of the cell during calorimetric measurements. The other two permit laser beams to be directed at the cell cathode if desired. Provision is also made for actuation of a mechanical device near the cell (e.g. rotation of magnets around the cell) during calorimetric measurements.

In addition to the device under test (DUT), the CC also contains a liquid-to-air heat exchanger and a fan which circulates the chamber air across the DUT and through the heat exchanger. Thus the heat evolved by the DUT is coupled to the water flowing through the passages in the heat exchange.

An active insulation (AI) system essentially eliminates heat loss through the walls of the CC. Each wall panel consists of a 6mm thick Al inner plate, 4 cm of Styrofoam insulation, and a 6mm thick Al outer plate. With temperature sensors on both Al plates and heaters on the outer Al plate, each wall panel is independently servo controlled to maintain a zero delta-T across the Styrofoam insulation.

Water is circulated around the heat exchange loop by a precision pumping system. An automated batch-weighing flowmeter regularly monitors the actual water flowrate, which is about 2.2 gm/sec. Three independent stages of temperature regulation bring the inlet water to 25.000 degrees C with a typical standard deviation of +/- 0.0006 degrees before it enters the CC. The CC and the water circulation system are enclosed in a temperature-controlled environmental enclosure (EE). This effectively eliminates problems caused by room temperature variations.

Data collection and experiment control are accomplished with two computers. One is devoted to housekeeping activities such as temperature control of the EE and the servo control of the 6 AI panels. The other computer is responsible for the calorimetry measurements such as electrical input power to the DUT, water flowrate measurements, temperatures of the inlet and outlet water streams, etc. In all, MOAC monitors 44 analog input channels and operates 15 analog output channels to control the system.

Both of these computers run Labview programs which serve up their front panel images as web pages. This permits anyone with Internet access to see what MOAC is doing. In addition, the experiment logbook is maintained as a Microsoft Frontpage HTML document which is also served up as a web page so you can see what we're trying to do with MOAC. All data is recorded to disk and may be replayed by the Labview program to recreate any display obtained during a run.

Accuracy:

We set out to design a calorimeter that would achieve +/- 0.1% accuracy. For example, with 10.000 watts going into the cell, we wanted MOAC to read between 9.990 and 10.010 watts of heat coming out of the cell (assuming no excess heat). MOAC is close to this goal now. However, there are "bad days" when MOAC exhibits mysterious shifts of 0.2 or 0.3% relative. We are actively working to resolve these issues now.

Specimen Versatility:

Because of the total heat collection design of the CC, MOAC exhibits excellent specimen versatility. For example, we have a 10 watt calibration resistor permanently mounted inside the CC (near the heat exchanger), a control electrolysis cell with H2O-H2SO4 electrolyte, and an immersed calibration resistor in that cell. All three of these heat sources read the same in MOAC to within +/- 0.1% relative.

Cell Access:

MOAC's roomy CC will accommodate a variety of cell sizes and shapes. In addition the mechanical actuator feature and optical access ports permit a variety of things to be done to the cell during calorimetric measurements.

Dual Method Calorimetry:

Since the cell is located in a stirred-air chamber during calorimetric measurements, MOAC performs an isoperibolic measurement of the heat evolved from the cell while the water-flow calorimetry is underway. The isoperibolic measurement is accomplished by comparing cell temperature to the CC air temperature.


Scott Little, EarthTech Int'l, Inc. http://www.earthtech.org
Suite 300, 4030 Braker Lane West, Austin TX 78759, USA
512-342-2185 (voice), 512-346-3017 (FAX), little@earthtech.org (email)





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