# I Magnetization of a Helical coil in a Reservoir of parrafin

#### puya

To test an Experimental Model , my advisor said to make this investigation;

I have a Reservoir of parrafin,
Capacity is 50 liters,
Around this Reservoir there is a Helical copper Pipe, I have to magnetize the Reservoir by using Helical coil .

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#### sophiecentaur

Gold Member
Hi and welcome to PF. What level of magnetic field were you planning on? What are your thoughts on this and what research have you done into solenoids?

#### puya

Hi and welcome to PF. What level of magnetic field were you planning on? What are your thoughts on this and what research have you done into solenoids?
Thanks to respond,
I want to use magnetic as much as it’s going to melt paraffin !
My field is mechanical engineering, in this case I don’t know how to complete this experimental test.

I want to model it for using in radiator of car to increase thermal conductivity

Last edited:

#### jrmichler

You are working on a PhD in mechanical engineering, so you should be able to find the theoretical basis for melting paraffin with magnetic fields. That includes alternating vs constant field, frequency if alternating, and field strength. From that, the equations for a solenoid are easily found. It's a simple matter of ampere-turns for DC, and ampere-turns plus inductance for AC. If you design an AC solenoid, part of the calculation is the voltage required to drive the peak current. You will need this to select a power supply.

Make sure that paraffin can be melted with magnetic fields before spending much time building an experimental setup to do what (possibly) cannot be done.

Keep in mind that there is more to consider than just thermal conductivity. You might also do some calculations to compare paraffin vs water with 50% antifreeze. Compare:
1) Thermal conductivity (heat transfer coefficients).
2) Viscosity (for pumping).
3) Specific heat and density (thermal capacity) as it affects pumping.
4) Check what happens at the maximum temperature in the engine, which is higher than the temperature seen by the temperature gauge.
5) Consider what happens in cold weather, such as cold soaked at -40 deg C.
6) Calculate thermal expansion over the full temperature range.

#### tech99

Gold Member
How is a magnetic field going to transfer energy to paraffin? It is a non magnetic material.
Even electric fields penetrate paraffin wax very well and I have used it to make a prism at 10GHz.

#### Nugatory

Mentor
Everyone posting to this thread should be warned that the word "paraffin" has different meanings in British English and American English. The Americans use "paraffin" to name a type of candle wax, and use the word "kerosene" for the petroleum-derived flammable liquid that the British call "paraffin".

I suspect that the original poster is using British English while the people talking about melting the stuff are assuming american English.

Staff Emeritus
The OP is talking about melting, so doesn't that mean we should conclude it's the wax-like substance?

#### Nik_2213

Has there been a more fundamental misunderstanding by the OP ?
This appears an immersed heating element, a resistive 'kettle whatsit', rather than a copper coil of inherently very low resistance...

"Magnetization of a Helical coil in a Reservoir of parrafin"

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