Rossi seems to be over-estimating pump output (again), the pump can do a maximum of 12l/hr (100Hz, 2ml per stroke) as per the spec sheet: http://www.lmi-pumps.com/datasheets/Pseries-08-01.pdf
On 12 October 2011 07:18, Horace Heffner <hheff...@mtaonline.net> wrote: > > My review of the Rossi 7 Oct 2011 experiment has been updated. > > http://www.mtaonline.net/~**hheffner/Rossi6Oct2011Review.**pdf<http://www.mtaonline.net/%7Ehheffner/Rossi6Oct2011Review.pdf> > > Also, the following sections were added: > > VOLUME CALCULATIONS > > The Lewan report says: "The E-cat model used in this test was enclosed in > a casing measuring about 50 x 60 x 35 centimeters." These appear to be > external measurements with wrapping, etc. > > "After cooling down the E-cat, the insulation was eliminated and the casing > was opened. Inside the casing metal flanges of a heat exchanger could be > seen, an object measuring about 30 x 30 x 30 centimeters. The rest of the > volume was empty space where water could be heated, entering through a valve > at the bottom, and with a valve at the top where steam could come out. " > > This gives an external volume of (50 x 60 x 35) cm^3 = 105000 cm^3 = 105 > liters. The heat exchanger etc. is (30 x 30 x 30) cm^3 = 27 liters. This > should give an internal volume of 105 liters - 27 liters = 78 liters. The > disagrees with Rossi’s prior statements. > > Rossi states: “The volume free for the water is about 30 liters, so that to > fill up it are necessary about 2 hours ( the pump of the primary circuit > pumps about 15 liters per hour), but, as a matter of fact, the water begins > to evaporate before the box is full of water, so usually the “Effect” of the > reactor starts before 2 hours.” > > Using the photo in the NyTeknik report, an estimate of internal dimensions > can be made. The width of the finned structure is 134 pixels, giving in > that line 134 px/(30 cm) = 4.467 pix/cm. The box width on that line is 209 > pix, giving a true dimension of (209 px)/(4.467 px/m) = 46.8 cm. The length > of the finned structure is 253 px, giving in that line (253 px)/(30 cm) = > 8.43 px/cm. The inside length of the box is 376 px, giving a true length of > 44.6 cm. The lip appears to be 35 px/(4.467 px/cm) = 7.8 cm wide. Judging > from the lip width, the top of the finned structure appears to be about 4 cm > below the lid. > > The gross inner volume of the box is (44.6 cm x 46.8 cm x 34 cm) = 71 > liters. > > The gross volume of the finned structure is (30 cm x 30 cm x 30 cm) = 27 > liters. > > It looks like about (1/9)*30 cm = 3.3 cm is cooling fins. About 50% of the > 3.3 cm x 30 cm x 30 cm = 3 liters should be water, giving a total finned > structure volume of 27 liters - 3 liters = 24 liters. > > The net water occupiable volume of the box is thus 71 liters - 27 liters = > 44 liters. > > The prior similar E-cat weighed in at 85 kg. The current E-cat weighed 95 > kg before water was added. > > ESTIMATING THE PRIMARY CIRCUIT WATER FLOW RATE > > The extreme instability of Pout begins at about 169 minutes into the run. > If we assume this means percolator effects begin then the device should be > almost full. It should contain close to 44 liters of water. The flow rate > to accomplish this is (44 liters)/(169 minutes) = 4.34 ml/s or 15 liters per > hour. This is a familiar number as a pump limit, but not as the primary > circuit flow rate. Percolator effects could happen at a lesser volume if > ripples are made in the water level . > > If the stated water volume of 30 liters is correct then the flow rate to > accomplish percolator effects is (30 liters)/(169 minutes) = 3 ml/s or 10.7 > liters per hour. This is not consistent with the flow rate 1.5 ml/sec, or > 5.4 liters per hour estimated earlier. Note that if this flow rate is > correct then the stored energy calulated in prior sections is reduced. It is > also true that more iron could be used to increase the thermal capacity, and > space for such is available. The numbers provided here are only for concept > checking. A sophisitcated model and knowledge of actual measurements is > needed for an accurate consistency check. Unfortuantely measurement of flow > rate into the E-cat was not made, even though a water meter was in the > circuit. > > Best regards, > > Horace Heffner > http://www.mtaonline.net/~**hheffner/<http://www.mtaonline.net/%7Ehheffner/> > > > > >
