<div dir="ltr"><div>84.8 lbs assuming a 60F ambient temperature.  See attached derivation.</div><div><br></div><div>Cliff</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Mar 3, 2017 at 2:52 PM, hank pronk via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="color:rgb(0,0,0);font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12px;background-color:rgb(255,255,255)"><div><span>Alan,</span></div><div id="m_-7869603393181715374yui_3_16_0_ym19_1_1488573976006_3364" dir="ltr"><span id="m_-7869603393181715374yui_3_16_0_ym19_1_1488573976006_3363">I need to know how much  a 10.7 cubic foot tank will extra when pumped up to 1,500 psi.  And how many cubic feet of air will I have when it is pumped up.</span></div><div id="m_-7869603393181715374yui_3_16_0_ym19_1_1488573976006_3364" dir="ltr"><span>Hank</span></div> <div class="m_-7869603393181715374qtdSeparateBR"><br><br></div><div class="m_-7869603393181715374yahoo_quoted" style="display:block"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div dir="ltr"><font face="Arial" size="2"> On Friday, March 3, 2017 12:28 PM, Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.<wbr>org</a>> wrote:<br></font></div>  <br><br> <div class="m_-7869603393181715374y_msg_container"><div id="m_-7869603393181715374yiv4906443182"><div><div><span></span></div><br clear="none"><div><div>Hank,</div><div>air weighs .0807 lbs per cubic foot approximately, depending on temperature.</div><div>So if you have an 80 cubic foot scuba tank the air weight full is 6.45 lb.</div><div>A scuba tank is 80 cubic ft at 3000 psi. If you halve the pressure you halve</div><div>the amount of air & weight. In other words, if you double the pressure you</div><div>double the weight for a given volume.</div><div>Let us know what you are trying to calculate if this doesn't help.</div><div>Alan</div><div><br clear="none"></div><div><br clear="none"></div><div><br clear="none"><div>Sent from my iPad</div></div><div class="m_-7869603393181715374yiv4906443182yqt7607906670" id="m_-7869603393181715374yiv4906443182yqt84539"><div><br clear="none">On 4/03/2017, at 6:33 AM, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs.<wbr>org</a>> wrote:<br clear="none"><br clear="none"></div><blockquote type="cite"><div><div style="color:rgb(0,0,0);font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12px;background-color:rgb(255,255,255)"><div id="m_-7869603393181715374yiv4906443182yui_3_16_0_ym19_1_1488561134912_6309">Okay, I am stumped!  can someone give me a formula to calculate the weight of air at a particular psi per cubic foot.</div><div id="m_-7869603393181715374yiv4906443182yui_3_16_0_ym19_1_1488561134912_6309">Thank you</div><div id="m_-7869603393181715374yiv4906443182yui_3_16_0_ym19_1_1488561134912_6309">Hank</div></div></div></blockquote></div><blockquote type="cite"><div><span>______________________________<wbr>_________________</span><br clear="none"><span>Personal_Submersibles mailing list</span><br clear="none"><span><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">Personal_Submersibles@psubs.<wbr>org</a></span><br clear="none"><span><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/<wbr>listinfo.cgi/personal_<wbr>submersibles</a></span><br clear="none"></div></blockquote></div></div></div><br><div class="m_-7869603393181715374yqt7607906670" id="m_-7869603393181715374yqt65939">______________________________<wbr>_________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" shape="rect">Personal_Submersibles@psubs.<wbr>org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" shape="rect">http://www.psubs.org/mailman/<wbr>listinfo.cgi/personal_<wbr>submersibles</a><br clear="none"></div><br><br></div>  </div> </div>  </div></div></div><br>______________________________<wbr>_________________<br>
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