Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Heat storage system (Prius-like insulated coolant reservoir)

Josh8loop · 02-10-2012, 12:30 PM

Well, it holds less than I was hoping. Liquid capacity a little over a gallon. That's too bad. Price was right though!

Update on an experiment I am conducting. Since I was curious to see just how long this 1 gallon capacity Dewar would hold a liquid hot, I made a quick lash up of an experiment last night. At 10:45 last evening I placed one gallon of boiling water into the dewar. I created a foam 6" diameter top to help keep heat loss through the top to a minimum. I poked a cheap digital temp probe in the container through the insulated styrofoam top and let the temperature stabilize. Basically it stabilized at 202 Deg F, and at 6:45 am this morning it was at 172 Deg F, at 9:45 am this morning it was at 163 Deg F, and at 10:45 it was at 161 Deg F. My experiment was only with water(not paraffin as planned), and certainly not under the optimal conditions, but at least I have some kind of idea what the heat storage capacity will be like.

Next on the agenda is to get some dimensions and make the heat exchange portion a reality.

02-10-2012, 12:30 PM	#55 (permalink)
Josh8loop Definately a Modder! Join Date: Aug 2011 Location: Port St. Lucie, Florida Posts: 94 Thanks: 5 Thanked 5 Times in 4 Posts	Well, it holds less than I was hoping. Liquid capacity a little over a gallon. That's too bad. Price was right though! Update on an experiment I am conducting. Since I was curious to see just how long this 1 gallon capacity Dewar would hold a liquid hot, I made a quick lash up of an experiment last night. At 10:45 last evening I placed one gallon of boiling water into the dewar. I created a foam 6" diameter top to help keep heat loss through the top to a minimum. I poked a cheap digital temp probe in the container through the insulated styrofoam top and let the temperature stabilize. Basically it stabilized at 202 Deg F, and at 6:45 am this morning it was at 172 Deg F, at 9:45 am this morning it was at 163 Deg F, and at 10:45 it was at 161 Deg F. My experiment was only with water(not paraffin as planned), and certainly not under the optimal conditions, but at least I have some kind of idea what the heat storage capacity will be like. Next on the agenda is to get some dimensions and make the heat exchange portion a reality. __________________ 2002 VW Jetta TDI 5-speed(completed 01M-5-speed swap at 155K miles) 45 MPG City with the 01M, 5-speed 60+ MPG City. Nokian Entyre Low RR Tires. Experimenting with the "Hybrid" 205 Deg F T-stat: http://forums.tdiclub.com/showthread...=306799&page=4 ..