Answer / Rochak Mehrotra

Heat transfer coefficients for coils in tanks can vary depending on the specific conditions, but common values for fouled tubes (coils) in shell-and-tube heat exchangers are around 1000-3000 W/(m²·K) for liquid-to-liquid systems and 500-2000 W/(m²·K) for gas-to-liquid systems. However, these values can change significantly based on factors such as fluid velocity, tube material, fouling, and temperature.

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