Need more heat!
I am currently looking into braised plate heat exchangers. I am looking for a small one to put in just before my 12v vegtherm. My system is heated really well and can even over-heat with my 12v in line and looped return. But right now my drive short distances of no more than, 5-10 miles now. I can never get up to temp unless I warm the car. I removed all my hose insulation when I was in Nevada earlier this summer because of over heating but now I need to add it back and do something else to. Another problem is that if you include all the hose and volume of wvo in my filter housing etc Its at least 1.5 quarts of wvo that I have to burn ‘cold’.
I might get a faster heat-up if I unloop the return since I have hose in hose but that is a hassle. If I leave the return looped the fuel flow will be very slow through the heat exchanger before the IP so the 12v heater can actually boost it above coolant temps almost instantly. My veg therm is good for about 6-8F rise. If I can get my veg temps to be 8F above the exact coolant temps almost instantly It might halve my diesel usage right now. I have found some cheap exchangers on ebay like this one:
http://cgi.ebay.com/S-10-Plate-Brazed-Heat-Exchanger-SVO-Water-Therminator_W0QQitemZ250280466796QQcmdZViewItem?hash=item250280466796&_trkparms=72%3A552|39%3A1|66%3A2|65%3A12|240%3A1318&_trksid=p3286.c0.m14&timeout=1218627981832
But I am not sure if its performance, I don’t need much… Since I run a looped return the wvo will move slowly through this exchanger letting me use a smaller one with a lower BTU output.
I will let you know how it all goes!