Practice - Film (Convection) Resistance
Practice Questions
Test your understanding with targeted questions
Define film resistance in the context of heat transfer.
💡 Hint: Think about the movement of heat through fluids.
What does the convective heat transfer coefficient represent?
💡 Hint: It starts with 'h'.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for calculating film resistance?
💡 Hint: Think about how heat flows.
True or False: An increase in surface area increases film resistance.
💡 Hint: Refer to the formula.
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Challenge Problems
Push your limits with advanced challenges
A pipe with a circular cross-section has a convective heat transfer coefficient of 45 W/m²·K and a surface area of 3 m². Calculate R_conv. If the coefficient decreases to 20 W/m²·K, what is the new resistance?
💡 Hint: Calculate using the given values.
Given a system where the surface area can be increased from 2 m² to 10 m² while maintaining h constant at 25 W/m²·K, discuss the impact on heat transfer efficiency and R_conv.
💡 Hint: Examine the effects of changing A in the film resistance formula.
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Reference links
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