Practice - Log Mean Temperature Difference (LMTD)
Practice Questions
Test your understanding with targeted questions
What is the formula for LMTD?
💡 Hint: Focus on the definition of LMTD and its components.
What does Q represent in the LMTD equation?
💡 Hint: Think about what is being calculated in heat exchangers.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does LMTD stand for?
💡 Hint: Focus on the full meaning of LMTD.
Is LMTD used when both ends temperature differences are constant?
💡 Hint: Remember when LMTD is applicable.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Design a heat exchanger to cool 1,000 liters of fluid from 90°C to 40°C using water at 20°C. Apply LMTD and calculate reasonable $$U$$ and $$A$$ values.
💡 Hint: Use all temperature values to set up the equations and calculate stepwise.
A heat exchanger has a capacity ratio $$C_r = 5$$, given inlet and outlet temperatures, determine the effectiveness and discuss its implications.
💡 Hint: Link flow arrangement types and effectiveness impacts; compare against constant value requirements.
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