FE Chemical · Material Energy Balances

FE Material Energy Balances Practice Questions

Solve FE-style Material Energy Balances questions and learn the reasoning behind each answer through interactive engineering cases.

Interactive problems•Reasoning explained•Solutions included

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E-063 · FE CHEMICAL Material Energy Balances

The Heater That Needed 418 kW, Not 209

Heating the liquid required 209 kJ/kg. At 2 kg/s, that became 418 kW of heat transfer.

Steady Flow Energy Balance Sensible Heating Intermediate 5–10 min

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PRACTICE SET

FE Material Energy Balances Practice Questions

Choose a question and solve it before reading the final engineering verdict.

E-063Material Energy Balances

The Heater That Needed 418 kW, Not 209

Heating the liquid required 209 kJ/kg. At 2 kg/s, that became 418 kW of heat transfer.

Steady Flow Energy Balance Sensible Heating5–10 min

E-062Material Energy Balances

The Evaporator That Removed 750 kg/h of Water

The feed was 1000 kg/h at 10 wt% solids. Concentrating to 40 wt% left only 250 kg/h liquid product.

Evaporator Nonvolatile Solids Balance5–10 min

E-061Material Energy Balances

The Mixer That Needed 100 kg/h of Concentrate

A 10 wt% stream and a 40 wt% stream had to produce 25 wt% product. The concentrate flow was 100 kg/h, not 25.

Steady State Component Balance5–10 min

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What should I practice in FE Material Energy Balances?

Practice the calculations, assumptions, constraints, and failure modes that appear around this topic. Each question here is designed to test whether you can apply the concept when the obvious calculation is not the whole engineering decision.