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<DIV>Hi, Hank,</DIV>
<DIV>Just got in from a three day video shoot offshore Vancouver – Unpacking my
dive gear and gonna hit the sack early – everything’s tired!</DIV>
<DIV>Will get back to you on the scrubber fan
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'><FONT
size=3 face=Calibri>size and make.</FONT></DIV>
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<DIV><FONT size=3 face=Calibri>Phil</FONT></DIV>
<DIV><FONT size=3 face=Calibri></FONT> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A
title=personal_submersibles@psubs.org
href="mailto:personal_submersibles@psubs.org">hank pronk via
Personal_Submersibles</A> </DIV>
<DIV><B>Sent:</B> Tuesday, November 01, 2016 3:09 PM</DIV>
<DIV><B>To:</B> <A title=personal_submersibles@psubs.org
href="mailto:personal_submersibles@psubs.org">Personal Submersibles General
Discussion</A> </DIV>
<DIV><B>Subject:</B> Re: [PSUBS-MAILIST] scrubber</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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<DIV><SPAN>Thanks Cliff,</SPAN></DIV>
<DIV dir=ltr><SPAN>I have the same question, but after thinking about it today,
I realize that the shape of the container is </SPAN>irrelevant. I can
treat it like a round scrubber with a fan at the end with an air space between
the fan and absorbent bed. I am just not sure if it is axial because the
scrubber seems to be a mesh body. I also did not pay much attention on my
tour, I was a bit overwhelmed.</DIV>
<DIV dir=ltr>Hank</DIV>
<DIV class=qtdSeparateBR><BR><BR></DIV>
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<DIV dir=ltr><FONT size=2 face=Arial>On Tuesday, November 1, 2016 2:13 PM, Cliff
Redus via Personal_Submersibles <personal_submersibles@psubs.org>
wrote:<BR></FONT></DIV><BR><BR>
<DIV class=y_msg_container>
<DIV id=yiv1692189736>
<DIV>
<DIV dir=ltr><FONT color=#000000 size=3 face="Times New Roman"></FONT>
<DIV style="MARGIN: 0in 0in 10pt"><FONT face=Calibri><FONT size=3><FONT
color=#000000>Hank, don’t know all the detail on the Deepworker 2000 but will
convey what I know.<SPAN> </SPAN></FONT></FONT><FONT color=#000000
size=3>Maybe Phil will chime in with details.</FONT></FONT></DIV><FONT
color=#000000 size=3 face="Times New Roman"></FONT>
<DIV style="MARGIN: 0in 0in 10pt"><FONT face=Calibri><FONT size=3><FONT
color=#000000>The system uses his O2 bellow add valve which bleeds 100% O2 into
the cabin based on a drop in barometric pressure from the time the hatch was
closed.<SPAN> </SPAN></FONT></FONT><FONT color=#000000 size=3>At the time
of launch SOP calls for them to pull a slight vacuum in the boat to assure the
hatch o-ring is sealed and to make it easier to dog the hatch
latches.</FONT><SPAN><FONT color=#000000 size=3> </FONT></SPAN><FONT
color=#000000 size=3>The last spec I saw on the DW 2000, the endurance is 80
hours. There are two scrubbers (one redundant), each containing 12 lbs of
SodaSorb HP. There is also a BIBS system.</FONT><SPAN><FONT color=#000000
size=3> </FONT></SPAN><FONT color=#000000 size=3>They have O2 and CO2
monitors.</FONT><SPAN><FONT color=#000000 size=3> </FONT></SPAN><FONT
color=#000000 size=3>The O2 bottles are externally mounted.</FONT><SPAN><FONT
color=#000000 size=3> </FONT></SPAN><FONT color=#000000 size=3>Since his
life support endurance is 80 hours, I he should have in excess of 80 scf of
O2.</FONT><SPAN><FONT color=#000000 size=3> </FONT></SPAN><FONT
color=#000000 size=3>I don’t know how the Sodasorb is set up to filter, axial or
radially nor do I know the type of blower he is using in the
scrubbers.</FONT><SPAN><FONT color=#000000 size=3> </FONT></SPAN><FONT
color=#000000 size=3>As long as the blower on the scrubber is strong enough to
circulate the cabin air through the filter every hour or so, the 100% O2 that is
blead into the cabin will mix with the cabin air due to molecular
diffusion.</FONT></FONT></DIV><FONT color=#000000 size=3
face="Times New Roman"></FONT>
<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3><FONT color=#000000><FONT
face=Calibri>I believe he uses the same basic life support system on all his
boats.<SPAN> </SPAN></FONT></FONT></FONT></DIV><FONT color=#000000 size=3
face="Times New Roman"></FONT>
<DIV style="MARGIN: 0in 0in 10pt"><FONT color=#000000 size=3 face=Calibri>Phil’s
paper on Life support </FONT><A
href="http://www.psubs.org/design/lifesupport/lifesupport.pdf" shape=rect
rel=nofollow target=_blank><FONT color=#0000ff size=3
face=Calibri>http://www.psubs.org/design/lifesupport/lifesupport.pdf</FONT></A><FONT
color=#000000 size=3 face=Calibri> is a good read on how his bellows add system
work and life support in general.</FONT></DIV><FONT color=#000000 size=3
face="Times New Roman"></FONT>
<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3><FONT color=#000000><FONT
face=Calibri>When Phil let the PSub members dive his subs at the Vancouver PSub
Convention, I remember seeing the scrubbers and noting they were compact but I
was more focused on diving the DW 2000 so did not pay too much attention to the
scrubber design.<SPAN> </SPAN></FONT></FONT></FONT></DIV><FONT
color=#000000 size=3 face="Times New Roman"></FONT>
<DIV style="MARGIN: 0in 0in 10pt"><FONT color=#000000 size=3 face=Calibri>The
two key things I would like to know is what is the make and model of the blower
he uses and is the filter oriented to pull the cabin air radially or axially
through the Sodasorb HP.</FONT></DIV>
<DIV style="MARGIN: 0in 0in 10pt"><FONT color=#000000 size=3 face=Calibri><BR
clear=none></FONT></DIV>
<DIV style="MARGIN: 0in 0in 10pt"><FONT color=#000000 size=3
face=Calibri>Cliff</FONT></DIV><FONT color=#000000 size=3
face="Times New Roman"></FONT></DIV>
<DIV class=yiv1692189736gmail_extra>
<DIV> </DIV>
<DIV class=yiv1692189736gmail_quote>On Tue, Nov 1, 2016 at 7:13 AM, hank pronk
via Personal_Submersibles <SPAN dir=ltr><<A
href="mailto:personal_submersibles@psubs.org" shape=rect rel=nofollow
target=_blank
ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>></SPAN>
wrote:<BR clear=none>
<BLOCKQUOTE class=yiv1692189736gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<DIV id=yiv1692189736yqt90670 class=yiv1692189736yqt4584832560>
<DIV>
<DIV
style="FONT-SIZE: 12px; FONT-FAMILY: helveticaneue, helvetica neue, helvetica, arial, lucida grande, sans-serif; COLOR: rgb(0,0,0); BACKGROUND-COLOR: rgb(255,255,255)">
<DIV
id=yiv1692189736m_-27303891125775751yui_3_16_0_ym19_1_1478002255312_2773>Hi
All,</DIV>
<DIV
id=yiv1692189736m_-27303891125775751yui_3_16_0_ym19_1_1478002255312_2773>Can
anyone explain how the DW scrubber works? How is the air defused
equally when the shape is irregular. I want to copy the concept of
a scrubber that fits tight to the hull to save space. </DIV>
<DIV
id=yiv1692189736m_-27303891125775751yui_3_16_0_ym19_1_1478002255312_2773>Thanks'</DIV><SPAN
class=yiv1692189736HOEnZb><FONT color=#888888></FONT></SPAN>
<DIV
id=yiv1692189736m_-27303891125775751yui_3_16_0_ym19_1_1478002255312_2773>Hank</DIV></DIV></DIV></DIV><BR
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