<div dir="ltr"><div class="gmail_extra"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:medium"><span style="font-family:arial,sans-serif;font-size:small;color:rgb(34,34,34)">On Thu, Apr 12, 2018 at 9:25 PM, jdunfee12--- via Stagecraft </span><span dir="ltr" style="font-family:arial,sans-serif;font-size:small;color:rgb(34,34,34)"><<a href="mailto:stagecraft@theatrical.net" target="_blank">stagecraft@theatrical.net</a>></span><span style="font-family:arial,sans-serif;font-size:small;color:rgb(34,34,34)"> wrote:</span><br></div></div></div></div></div></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:16px"><span class=""><div></div>
<div><span style="color:rgb(38,40,42);font-size:13px">.</span><span style="color:rgb(38,40,42);font-size:13px">One approach I have not seen, is to immerse the entire LED in a container of deionized water, and then circulate that water through a heat exchanger. Note that the LED itself is in direct contact with the deionized water. I have read that metal should not be exposed to deionized water, because it is corrosive. I guess in applications that need the electrical insulation capability of the deionized water, but have metal, they simply coat the metal with something to protect it.</span></div></span><div id="m_-110491252127153498ydp3cb35c95yahoo_quoted_3916025022" class="m_-110491252127153498ydp3cb35c95yahoo_quoted"><div style="font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:13px;color:#26282a"><div><div dir="ltr"><br></div></div></div></div></div></div></blockquote></div><br></div><div class="gmail_extra">If deionized water is a problem, what about an oil, such as mineral oil?</div></div>