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Using a Dryer heating element with 12v batteries
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dondiggity
Member Posts: 1
Hello everyone!
I'm trying to create the most basic form of heat transfer I can think of but I do not know much about converting energy.
I have a dryer heating element and I want to use a couple 12v deep cell marine batteries to power it. What all would I need to make this work besides the element, fan and the batteries? Thank you so much!
This is the heat element: https://www.amazon.com/dp/B09NX7Y3PR?pd_rd_i=B09NX7Y3PR&pf_rd_p=b000e0a09e93480fbf78a83c8136dfcb&pf_rd_r=T1MNYA1VRJ55JVEA6B0D&pd_rd_wg=nb9gH&pd_rd_w=JMmIo&pd_rd_r=81ec570bc5f14a848265b9fd7cbd6d70
I'm trying to create the most basic form of heat transfer I can think of but I do not know much about converting energy.
I have a dryer heating element and I want to use a couple 12v deep cell marine batteries to power it. What all would I need to make this work besides the element, fan and the batteries? Thank you so much!
This is the heat element: https://www.amazon.com/dp/B09NX7Y3PR?pd_rd_i=B09NX7Y3PR&pf_rd_p=b000e0a09e93480fbf78a83c8136dfcb&pf_rd_r=T1MNYA1VRJ55JVEA6B0D&pd_rd_wg=nb9gH&pd_rd_w=JMmIo&pd_rd_r=81ec570bc5f14a848265b9fd7cbd6d70
0
Comments

That is a 240 V element. To power it from 12 V batteries you will need 20 of them connected in series. At that voltage it will draw 23 A, plus the motor.
Why do you want to do this?—
Bburd0 
If you powered it at 240v without a blower moving air over it, it would burn up. You could power it at a lower voltage without forced cooling.0

The element will work on DC
The fan motor will not unless it's a DC motor
I don't know what DC voltage that heater element will want but I have a feeling its not 240V.Single pipe quasivapor system. Typical operating pressure 0.14  0.43 oz. EcoSteam ES20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment0 
Hi @dondiggity , Here is a purpose made 12 VDC element: https://www.amazon.com/ElectricCeramicInsulatedThermostaticHeating/dp/B09KGJC7GY/ref=sr_1_5?crid=30IH3DZI85B8W&keywords=12+vdc+heating+element&qid=1667868533&s=hi&sprefix=12+vdc+heating+element,tools,211&sr=15 It's 200 watts. You would want a 12 VDC fan and some sort of control for it, which could simply be a switch. It all depends of what you're tyring to get done
Yours, Larry0 
It is a resistive load (and nichrome is a thermistor but that isn't super important here) so it will behave exactly the same with 240v rms ac and 240v dc.ChrisJ said:The element will work on DC
The fan motor will not unless it's a DC motor
I don't know what DC voltage that heater element will want but I have a feeling its not 240V.2 

its just for fun if you could lol0

pedmec said:Did a little math. This element is 5500 watt. You will only need 458 amps if you could make it work. Feel free to correct my math
At 12 volts its only 13.75w and will draw 1.14A.
But I interpreted your response as assuming you're using a dcdc converter to step up the voltage, so measuring the 12V draw from the batteries.
Single pipe quasivapor system. Typical operating pressure 0.14  0.43 oz. EcoSteam ES20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment0 
It's a 5500w element at 240 volts.ChrisJ said:pedmec said:Did a little math. This element is 5500 watt. You will only need 458 amps if you could make it work. Feel free to correct my math
At 12 volts its only 13.75w and will draw 1.14A.
But I interpreted your response as assuming you're using a dcdc converter to step up the voltage, so measuring the 12V draw from the batteries.
Nichrome being a thermistor is important here.0 
Nichrome being a thermistor is important here.mattmia2 said:
It's a 5500w element at 240 volts.ChrisJ said:pedmec said:Did a little math. This element is 5500 watt. You will only need 458 amps if you could make it work. Feel free to correct my math
At 12 volts its only 13.75w and will draw 1.14A.
But I interpreted your response as assuming you're using a dcdc converter to step up the voltage, so measuring the 12V draw from the batteries.
I assume PTC?
Single pipe quasivapor system. Typical operating pressure 0.14  0.43 oz. EcoSteam ES20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment0 
I assume PTC?ChrisJ said:
Nichrome being a thermistor is important here.mattmia2 said:
It's a 5500w element at 240 volts.ChrisJ said:pedmec said:Did a little math. This element is 5500 watt. You will only need 458 amps if you could make it work. Feel free to correct my math
At 12 volts its only 13.75w and will draw 1.14A.
But I interpreted your response as assuming you're using a dcdc converter to step up the voltage, so measuring the 12V draw from the batteries.
Yes. But it means its current consumption vs voltage isnt linear. It will consume more power than you would predict just using ohms law at lower than the rated voltage.0 
You guys have gone to far with a little joke. Point being if you really tried to get to 5500 watts. Having a little fun with him0
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