A cylindrical water tank 1.5 m in diameter and 2.5 m high is surrounded on both ends and the sides with $R = 3$ insulation. It is desired to keep the water at $80 ^ { \circ } \mathrm { C }$, while the ambient temperature is $20 ^ { \circ } \mathrm { C }$. What is the minimum wattage of an electric heater that needs to be placed inside the tank?

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The Answer of A cylindrical water tank 1.5 m in diameter and 2.5 m high is surrounded on both ends and the sides with $R = 3$ insulation. It is desired to keep the water at $80 ^ { \circ } \mathrm { C }$, while the ambient temperature is $20 ^ { \circ } \mathrm { C }$. What is the minimum wattage of an electric heater that needs to be placed inside the tank?

A Cylindrical Water Tank 1 R=3R = 3R=3 Insulation 80∘C80 ^ { \circ } \mathrm { C }80∘C

A Cylindrical Water Tank 1 $R = 3$ Insulation $80 ^ { \circ } \mathrm { C }$