What Is the Temperature of a Plate Insulated with Kaowool at 2000°F?

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Discussion Overview

The discussion revolves around the thermal behavior of a system involving Kaowool thermal insulation placed between two aluminum plates, with one plate exposed to a high-temperature source. Participants are exploring how the insulation affects the temperature on the opposite side of the insulation at 2000°F, considering various parameters such as heat flow, insulation thickness, and system constraints.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant seeks to determine the temperature of the plate on the opposite side of the insulation when exposed to a heat source at 2000°F.
  • Another participant suggests that specific temperature outcomes depend on additional constraints, such as heat flow and insulation thickness.
  • A different participant mentions a scenario where a heat probe must not exceed 500°F, questioning whether the insulation can limit heat transfer effectively.
  • One participant clarifies that heat flow is measured in various units and emphasizes the independence of temperature from heat flow rates, while also discussing the implications of thermal conductivity.
  • Another participant notes that the answer to the temperature question is contingent on the dimensions of the plates, insulation thickness, and rod size, indicating that significant insulation thickness could lead to minimal temperature rise on the plate.

Areas of Agreement / Disagreement

Participants express differing views on the factors influencing the temperature on the opposite side of the insulation, with no consensus reached on specific outcomes or methods to calculate the temperature.

Contextual Notes

Limitations include the lack of specific values for insulation thickness, dimensions of the plates, and the heat flow rate, which are necessary for accurate calculations. The discussion also highlights the complexity of thermal dynamics in high-temperature scenarios.

Who May Find This Useful

Individuals interested in thermal insulation properties, heat transfer calculations, and high-temperature applications in engineering or materials science may find this discussion relevant.

Tuatha
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I am looking Kaowool Thermal insulation for a project. It looks like the values presented are @2000 F, 1.28 BTU, .20 w/m*k

I was wondering if someone could help me to figure out what the "output" heat would be at 2000 F. For example: If I have an aluminum rod sitting over a fire burning at 2000 F, with this rod connected to a flat plate. In between this plate is the Kaowool Thermal insulation. On the other side of this insulation is another plate. So basically the insulation is sandwiched between two aluminum plates, with one side having an attached rod that is in direct contact with 2000 F. I would like to know what the temperature of the plate would be on the other side of the insulation? Any help? Thanks.
 
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Tuatha said:
temperature of the plate would be on the other side of the insulation?
What temperature would you like it to be? You'll have to constrain your system further to generate any specific temperature: specify a heat flow, insulation thickness, other details.
 
Well the heat source is around 1200-1500 degrees. Using a probe in the heat source I need to have the end of he probe no hotter than 500 degrees. I was wondering if the insulation material sandwiched in the middle of the heat probe would limit the heat flowing down the probe to less than 500 degrees.
 
"Heat flow" is measured in Watts, Joules/s, calories/s, BTU/hr, or some other energy unit per some time unit. Temperature is measured in degrees Kelvin, centigrade, Celsius, Rankine, Fahrenheit and no doubt other scales, and is independent of heat flow rates. Thermal conductivity (the quantity listed for the insulation) is measured in units of heat flow rate per units of area per units of temperature gradient (del T per thickness); area and thickness are combined to yield the usual W/(m⋅K), or BTU/(ft⋅hr).

I can engineer very small heat flows at very high temperatures, high heat flows at high temperatures, low heat flows at low temperatures, and high heat flows at low temperatures; I can't engineer
Tuatha said:
insulation material sandwiched in the middle of the heat probe
to do anything.
 
The answer to your question depends on the thicknesses of the plates, the thickness of the insulation, and the dimensions of the rod. If the insulation is a kilometer thick, for example, then the temperature rise on the plate away from the rod will not be significant.

Chet
 

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