Explain the principle of a critical radius when adding isolation
to pipes
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Mechanical Engineering
Explain the principle of a critical radius when adding isolationto pipes
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We know that by adding more insulation to a wall always decreases heat transfer The thicker the insulation the lower the heat transfer rate This is expected since the heat transfer area A is constant and adding insulation always increases the thermal resistance of the wall without affecting the convection resistance Adding insulation to a cylindrical piece or a spherical shell however is a different matter The additional insulation increases the conduction resistance of the insulation layer but
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