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, and tell me that the shape of the finned structure is a square and not a rectangle… Now, do you think that Lewan’s dimensions for that structure 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... next
time, if possible, just a quick note to indicate that you saw the post or email and are working on it... for a trivial issue I wouldn't care, but this definitely affects some of your calculations in your report, so I wanted to be sure you at least saw that there might be an error in Mat's dimensions.

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/




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