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Originally Posted by MaxxxRacer
hmm.. Well i can make a res out of some kind of thermus material..
and yah it would need to be seriously insulated.. if that shorted out... well oh boy would i be in the hospital...
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My idea was just a consideration. I don't know if it is good or not. I didn't mean insulation from electrical shock, I meant insulation from heat loss. What ever res you got with the heater in it will be sheading a lot of heat at 350 watts. You don't want that. If there is a lot of heat radiating off your res or heat die then your electrical measurments turn nearly useless as a lot of that power is not going directly to the radiator. Your numbers will not be accurate. You want as much of that heat to be contained in the loop. If you loose 50watts of the heat at 350watts just in secondary losses you will get bad numbers when you add in your electrical measurments for how much heat the rad is actually dissipating. You would be 50watts off. Your secondary losses will probably not be liner through the wattage range either. At 350watts you may loose 50watts, but at 250watts you may only loose 20 watts ect depending on insulation thickness and type.
If you don't think you will loose much heat then touch a 100watt lightbulb (don't really do it, HOT!) and see how hot it is. That is heat radiating off of it. You have to contain as much of that heat as possible in the loop IMO.