SLight correction made at end On Oct 13, 2011, at 8:15 PM, Mark Iverson-ZeroPoint wrote:

Hi Horace, Sorry! I didn't mean to be a pest,

You are not a pest!

but I didn't even get an ACK that indicated you had seen my post

Here you mean the following I assume?

Look at all the pictures of the heat-spreader inside the E-Cat, andtell me that the shape of the finned structure is a square and nota rectangle… Now, do you think that Lewan’s dimensions for thatstructure 30 x 30 x 30 are right?-mark

(or personal email)

`Sorry, I did not realize I got a personal email from you on this.`

`There vas a [Vo] in the subject line, which routes it to my vortex-l`

`in box.`

`I am way behind on both reading and posting. There are lots of posts`

`I flagged to respond to but did not get to because of time. If a`

`subject is one which I have already dealt with and not posted or am`

`dealing with in my survey I tend to just delay any response, because`

`I can simply quote or refer to the section which deals with the`

`issue. In this specific case I have been looking at photos and film`

`to try to determine the dimensions. This is a lengthy process.`

`BTW, it appears to me the rectangular look of the finned structure is`

`just a matter of perspective. It looks more square from the top:`

http://www.mtaonline.net/~hheffner/LewanEcatTop2.jpg in this modified photo by Mat Lewans of NyTeknik.

`The thing most bothersome to me is the lack of any reference item`

`with which to pin down *actual dimensions*.`

about this issue... nexttime, if possible, just a quick note to indicate that you saw thepost oremail and are working on it... for a trivial issue I wouldn't care,but thisdefinitely affects some of your calculations in your report, so Iwanted tobe sure you at least saw that there might be an error in Mat'sdimensions.

`I was keenly aware of the problem and working on it. I saw no sense`

`in disagreeing with your post, which I anticipated, until I had`

`better data put together.`

No Hurry... let us know when you've updated your report. -Mark

`Here is a preview based on this modified photo by Mat Lewans of`

`NyTeknik:`

http://www.mtaonline.net/~hheffner/LewanEcatTop2.jpg All lengths below in pixels unless otherwise given.

`The ratio of the magneta lines is 244/195 = 1.319. The ratio of the`

`red lines is 179/154 = 1.162. This is due to perspective, assuming`

`all the angles are right angles.`

`The mid-line width of the inside of the container box (magenta lines)`

`is (195+244)/2 =219.5. The mid-line width of the reactor box (red`

`lines) is (179+154)/2 = 166.6 The ratio of the width of the box to`

`the width of the reactor is 219.5/166.6 = 1.3145. If the reactor is`

`30 cm wide then the box interior is 1.3145*(30 cm) = 39.4 cm wide.`

`This gives a mean sideways gap width of (39.4 cm - 30 cm)/2 = 4.7 cm.`

`The average length of the reactor (blue lines) is (155+154)/2 =154.5.`

`The average length of the inside of the container box (orange lines)`

`is (229+237)/2 = 233. Adjusting the orange line lengths for`

`perspective, we have a length of (1.162/1.319)*233 = 205. The ratio`

`of length of the interior of the container to the reactor box is`

`205/154.5 = 1.6181. If the reactor length is 30 cm then the length`

`of the box is 48.5 cm. This gives a mean lengthwise gap width of`

`(48.5 cm - 30 cm)/2 = 9.25 cm.`

`Using a gap between the top of the reactor and the bottom of the lid`

`of 3.5 cm, determined elsewhere, we have a container interior`

`dimensions of 34.9 cm x 48.5 cm x 33.5 cm, for a volume of 56703 cm^3`

`= 56.7 liters. The volume of the reactor box is (30 cm^3) = 27000`

`cm^3 = 27 liters. T this we need to subtract the water spaces between`

`the fins.`

`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 56.7 liters - 24`

`liters = 32.7 liters. This volume should be reduced some for the`

`many bolt heads that bolt the reactor case to the box, or bolt the`

`reactor case together. Rossi stated in his blog that this internal`

`volume is 30 liters. The measurements estimated for the device based`

`on a 30 cm^3 reactor appear to be roughly inconsistent with Rossie’s`

`statement. It is of course important to obtain accurate measurements`

`of these values to make consistent sense of the data.`

-----Original Message----- From: Horace Heffner [mailto:hheff...@mtaonline.net] Sent: Thursday, October 13, 2011 5:59 PM Subject: Re: [Vo]:Analysis by Bob Higgins Mark, I am working on getting better or confirming estimates. I am also working on multiple other things at the moment so please be patient. [snip]

Best regards, Horace Heffner http://www.mtaonline.net/~hheffner/