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--></style></head><body lang=EN-US link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><b><span style='font-size:11.0pt;mso-ligatures:none'><o:p> </o:p></span></b></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Woohooo!<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>We have our first customer! I was out for a walk and met this guy, name = Ben. I dropped him a note after we spoke about an hour ago. This note isn’t to our Ben, but rather that guy, but like our Ben, he comes across as a hell of a nice guy and very smart. He isn’t an engineer, but sees the value in proles coming up with alternative uses for underutilized car charging ports to keep the businesses alive so that it stays available for EV drivers.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>The bad news is…<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Well, read on please. This is what I sent to Ben the EV guy:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Ben, you and I spoke about half an hour ago up at the charging station, where I think you may be the first power buyer from that facilty.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>This station opened 13 days ago. There is another non-Musk station at the next exit south, eight port, opened for about 6 years now (it was already charging before covid started in Dec 2019.) I go by there often. Most of the time there are no cars charging there, but sometimes one. I have never seen more than one at that station.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Regarding that idear we discussed while you were charging: as we were speaking I thought of something that might make the whole idea a no-fly zone. I may have (as in “I DID”) underestimate the cost of cooling the processors. I guessed at it before I did any calculations. My original idear was to have the processors air cooled, but a processor hipster friend said that it wouldn’t work. I didn’t ask him why, but I did the calcs and realized he was right: there wouldn’t be enough cooling capacity available for even the 15 processor version of the mobile calculation station, never mind the 55 processor which uses that high-speed charger where you are parked. >From what I can tell, it would get too hot in the minivan. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>So next I thought of liquid cooling, drawing the pressure down to about 3 MPa, perhaps in pressure cookers drawn down rather than pressured up, let the boiling distilled water carry away the heat.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-ligatures:none'><img width=361 height=269 style='width:3.7604in;height:2.802in' id="Picture_x0020_1" src="cid:image002.jpg@01DC5C87.D298EC90"></span><span style='font-size:11.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>I walked home, sharpened my pencil, don’t like what I see: the power cost of just cooling the processors by that method is higher than the power cost of the processor itself. I will check my work, and it might be wrong (I hope it is) but I don’t see my mistake yet. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Second bad news: the power you were buying up there is more expensive than I realized.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Sigh. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>No worries, all is not lost. All is merely… temporarily misplaced, I hope. If instead of water in phase change, which I now think is an inherently bad idea because of corrosion, the water would only go to about 50C, then draw the coolant out to a water to air heat exchanger, like a more sincere version of the radiator on a truck. If we go that route, there are lower-corrosion coolants available, such as ethylene glycol or mineral spirits or soybean glycerol or any saponified triglyceride, so long as it is a low-corrosive coolant. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>We already know the last three items on that short list (and possibly four (I don’t know much about ethylene glycol (but it seems to do fine in the radiator of your car (well, not YOUR car, but mine)))) will not be giving away any oxygen atoms, and they have no free hydrogen, so those won’t corrode the electronics. We know that straight ethylene glycol can take the heat, as will mineral spirits.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Initial calcs suggest that approach might work, but I have more calculating to do and I don’t know much about heat transfer rates on those coolants or what happens if I try to use three or four Diesel truck radiators as heat exchangers (not because they are optimal but because they are cheap (they don’t need to be new (and I already own one.)))<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>If I ever get this notion to the critical design review stage, I will include you on the cc of potential investors if you wish. I need to look into the market: who is buying processed data and so on, and how much is it worth, etc.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Yours,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>spike<o:p></o:p></span></p></div></body></html>