Diffusion Depth in a Geothermal Well formula |
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fn=˙mf⋅c⋅f(t)2⋅π⋅k | ||
Symbol | English | Metric |
A(t) = Diffusion Depth as a Function of Time |
ft | - |
˙mf = Mass Flow Rate | lbm/hr | - |
c = Fluid Thermal Heat Capacity | Btu/lbm−F | - |
k = Earth Thermal Conductivity | 33.6Btu/hr−day−F | - |
π = Pi | 3.141592653... | - |
f(t) = Time Function that Represents the Transient Heat Transfer to the Formation | dimensionless | - |
Diffusion depth in a geothermal well is the depth at which heat from the Earth's interior has diffused into the surrounding rock and soil over geological timescales. It is a measure of how far heat has traveled through the Earth's crust due to thermal diffusion, which is the process of heat transfer through materials in response to a temperature gradient.
Key Points about Diffusion Depth