Calculating Rate of Heat Transfer Through Lagged Pipes

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This video explains how to determine the rate of heat loss due to combined conduction and convection for lagged pipes and pipework.
You will learn how to calculate the total thermal resistance for the pipe and lagging, as well as the thermal resistance due to the surface heat transfer coefficients of the fluid interfaces. Then you will learn how to calculate the rate of heat transfer per meter of length of pipe.
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[@HALOO_ANTON]

Thank your for the explaination. GBU man

[@instruashu]

Please advise if RH and Rc are resistance due to convection heat transfer. Also how to add resistance due to radiation heat transfer

[@EngineersAcademyLTD]

These are the thermal resistances due to convection (surface effects). Radiation is not covered in this video.