Calculating Heat Loss vs Distance - Hi Guys

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Discussion Overview

The discussion revolves around calculating the temperature of air at a specified distance from the surface of heated objects, specifically a steel pipe and a steel plate. Participants seek to understand the factors influencing heat loss and temperature distribution in these scenarios.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant asks for an easy method to determine the temperature of air 100mm away from a 300mm diameter steel pipe at 200°C.
  • Another participant emphasizes the need for additional details such as the material properties of the pipe and the nature of the object being measured to accurately calculate temperature, suggesting that only heat flux can be calculated without this information.
  • A participant clarifies that the pipe is made of unpainted steel and specifies that they want to know the temperature of air.
  • Further, another participant reiterates the material and distance, providing links to resources on convective heat transfer and heat loss for steel pipes.
  • A new scenario is introduced where a participant inquires about the temperature of air 100mm away from a 300mm x 600mm steel plate at 200°C, asking for the relevant equation.
  • Subsequent posts express a desire for assistance, indicating a lack of responses to the technical inquiries.

Areas of Agreement / Disagreement

Participants generally agree on the need for specific details to calculate temperature accurately, but the discussion remains unresolved regarding the actual calculations and methodologies to be used.

Contextual Notes

Limitations include the absence of specific equations or methods for calculating temperature at a distance, as well as the need for further clarification on the conditions and assumptions involved in the heat transfer process.

Who May Find This Useful

Individuals interested in thermal dynamics, engineering applications involving heat transfer, and those seeking practical methods for calculating temperature distributions in heated materials.

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Hi Guys,

Is there an easy way to determine this?

Say I have a 300mm Dia Pipe that @ 200deg C, ambient temp 30gec C.

What would be the Temp 100mm away from the surface.

Thanks in advance
 
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You need to specify what the pipe is made of, if it is painted/coated etc. Also you need to specify the composition of what you are measuring 100 mm away (another pipe? your face? air?) in order to determine what the temperature of that object would be. Otherwise you can only calculate the heat flux of the pipe.

This link will provide some useful guidance: http://www.engineeringtoolbox.com/radiation-heat-transfer-d_431.html
 
The pipe is made of unpainted steel and I would like to know the temp of air.
 
So if I had a 300mm X 600mm Steel Plate who's surface temp is 200deg C

What would be the temp of Air 100mm From the surface?

What the equation to work this out?

Thanks
 
Bump, Help Please
 
Anyone?
 

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