بهبود ارزیابی تلفات حرارتی از آرایه های لوله ها یا کابل برق مدفون در خاک همگن

In this paper the extent of such inaccuracies is investigated by numerical techniques. Results show that the thermal resistance value of the worst refrigerated cylinder, obtained from numerical simulation, can result even 60% higher than the value calculated with standard IEC–IEEE method, while the thermal resistance of the whole array does not differ from the value obtained with the standard IEC–IEEE calculation method. Some correlating equations to obtain more accurate results in the thermal resistance calculation for the worst refrigerated cylinder are proposed.