The fans....
http://www.amazon.com/gp/product/B004SB ... UTF8&psc=1
The pump....
http://www.ebay.com/itm/New-Top-DC-12V- ... 5b0abfbe70
The hoses are faucet connection hoses with 1/2" pipe thread fittings.
lrrowe wrote:MtnDon,
Do you see using a thermostat which would engage a relay at selected settings? Without doing much research, that was my thinking.
Socal Tom wrote:You may want to measure the inlet and outlet temps to see if there is room to slow down the pump.
Tom
MtnDon wrote:Socal Tom wrote:You may want to measure the inlet and outlet temps to see if there is room to slow down the pump.
Tom
I'll decide if that merits more thought after the initial trials are over. I do have a PWM controller around here someplace doing nothing.
MtnDon wrote:Yes restricting the flow for an impeller pump does make it work less hard, as hard as that may be to grasp. However, I am also aware that works best for cool water. When restricting the flow of hot water, too much restriction can cause pump damage. And I have no idea how one figures where the limit is. In any event, at 0.66 amp as it is, I could run the pump and fans 24 hours a day for a week (a literal 24/7) and still have 50% of my battery capacity available. The KISS principle might indicate that valves or whatever might be an extra expense / complication we don't really need. We'll make many decisions as the test progresses. Thanks.
But then it is a simple enough job to place a valve inline when using the flexy hoses and measure the current change and see what happens to heat output of the radiator. Or I could use a restriction disc placed in one of the hose end connections.
MtnDon wrote:lrrowe wrote:MtnDon,
Do you see using a thermostat which would engage a relay at selected settings? Without doing much research, that was my thinking.
I plan on using a 12 volt temperature controller, similar to the 120 VAC version I used on the slow cooker hack. My plan is to simply turn the pump and fans on and off together, at the same time. It contains a relay switch good for 10 amps. More than enough. I don't see a lot of benefit to having the fan turn on and off via its own snap switch or whatever. The system is so small I feel that is unnecessary and just another complication.
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