PTC Thermistor heater for diesel filer ?

I want to build a 12v PTC thermistor heater to warm the diesel fuel
filter( self regulating to 150-160F ) on an old Ford truck I have . I
think about 300 watts would be enough . I need some how-to advice and
sources for parts . - Thanks

 

[John Woodgate]

I read in sci.electronics.design that rkpatt758@my-deja.com wrote (in
<1102928242.724533.255860@f14g2000cwb.googlegroups.com&gt about 'PTC
Thermistor heater for diesel filer ?', on Mon, 13 Dec 2004:

I want to build a 12v PTC thermistor heater to warm the diesel fuel
filter( self regulating to 150-160F ) on an old Ford truck I have . I
think about 300 watts would be enough . I need some how-to advice and
sources for parts . - Thanks

Where will you get the necessary 25 A from, for long enough?
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk

 

I will put it on a separate circuit on 10-12 ga wire fused at the
battery with a relay connected to the key switch .

 

[R]

rkpatt758@my-deja.com wrote in news:1102928242.724533.255860
@f14g2000cwb.googlegroups.com:

I want to build a 12v PTC thermistor heater to warm the diesel fuel
filter( self regulating to 150-160F ) on an old Ford truck I have . I
think about 300 watts would be enough . I need some how-to advice and
sources for parts . - Thanks

150F seems excessive.

r

--
Nothing beats the bandwidth of a station wagon filled with DLT tapes.

 

[Mark Jones]

rkpatt758@my-deja.com wrote:

I will put it on a separate circuit on 10-12 ga wire fused at the
battery with a relay connected to the key switch .

May I suggest you run it from a second starter solenoid, and run
that solenoid from a timer. Reset the timer when the car is running.

 

I plan to run a diesel / veg oil at some point in time and need those
temps to prevent gelling.

150F seems excessive.

 

[martin griffith]

On 13 Dec 2004 13:33:49 -0800, in sci.electronics.design
rkpatt758@my-deja.com wrote:

I plan to run a diesel / veg oil at some point in time and need those
temps to prevent gelling.

150F seems excessive.
have you checked out

http://journeytoforever.org/biodiesel_svo.html

good references in this on using staight veggie oil instead of
biodiesel


martin

Serious error.
All shortcuts have disappeared.
Screen. Mind. Both are blank.

 

Yes I am plaining insulate the filter . Most of my internet "research"
has revealled recommendations of a an optimum filter fuel l
temperature of 150-180 for vegetable oil (WVO, SVO ). I was hoping
that the PTC solution would but it sounds like they won't and I " A
discrete sensor and heater might offer better versatility ( eg glow
plug heater with furnace type - snap disc limit switch ) , while the
ptc elements and hardware are researched. But There some 12 v higher
temperature PTC s do exist out there ( used 12 volt coffee mugs etc ,
like those here -
http://www.roadtrucker.com/12-volt-kitchen-1.htm , so I am still
interested in the PTC method .