The discussion focuses on the thermodynamics of resistive heating in a thermally sealed chamber, particularly at low power levels. It establishes that heat loss is the primary limiting factor for achieving high temperatures, regardless of the input power. The steady state temperature is determined by the balance of heat input and heat loss, influenced by the thermal resistance of the chamber. The conversation also explores the concept of a 'thermal battery' for heat storage, emphasizing the advantages of using materials like wax for thermal energy storage due to their latent heat properties.
PREREQUISITESEngineers, researchers, and hobbyists interested in thermal management, energy storage solutions, and the practical applications of resistive heating technologies.
Of course there would have to be some sort of safety screen covering the opening just like in a resistive element space heater. Good idea about the Dewar.hmmm27 said:Bucket o' Magma. I wonder how much a paint-can sized Dewar would cost.
A ~9cm dia opening should radiate 1kw @ 1,000C
The power radiated goes like T to the fourth power, T being.the absolute temperature. To me, this implies that you need to multiply the delta T (between the wire and its environment) by only the quartic root of 10 if you want to x10 the power emitted, i.e. 1.78, roughly. What am I missing?Baluncore said:To radiate 10 times the heat, will require 10 times the area, or 10 times the temperature difference, or a blend of those two. The product of element area by temperature difference will be proportional to the power.
I don't know.fluidistic said:What am I missing?