Calculator
Heat Transfer
Heat Exchanger Area Calculator
Estimate heat-transfer area from heat duty, overall U, reference LMTD, and supplied correction factor, with SI and engineering units, corrected temperature difference, and…
A = Q / (U F ΔTₗₘ)
ENGINEERING TOPIC
Heat Transfer
Heat duty, LMTD, heat exchanger area, and heat loss calculations.
07 RESOURCES
Resources
Calculator
Heat Transfer
Sensible Heat Duty Calculator
Calculate sensible heating or cooling duty from mass flow, specific heat capacity, and temperature change, with SI and engineering units and worked steps.
Q = ṁ cₚ ΔT
Calculator
Heat Transfer
LMTD Calculator
Calculate log mean temperature difference for countercurrent and parallel heat exchangers, with unit conversion, end differences, and a temperature diagram.
ΔTₗₘ = (ΔT₁ − ΔT₂) / ln(ΔT₁/ΔT₂)
Guide
Heat Transfer
LMTD Worked Example: Log Mean Temperature Difference for a Countercurrent Heat Exchanger
The LMTD of a countercurrent heat exchanger is the logarithmic average of the temperature differences at its two ends. For hot fluid cooling…
Guide
Heat Transfer
How to Calculate Sensible Heat Duty from Mass Flow and Heat Capacity
Sensible heat duty is calculated as Q̇ = ṁ·cp·ΔT: mass flow rate multiplied by specific heat capacity multiplied by temperature change, giving a…
Guide
Heat Transfer
LMTD Explained: Temperature Differences and Flow Arrangements
The log mean temperature difference (LMTD) is the mean driving force used in the heat exchanger sizing equation Q = UAΔTm, computed from…
Guide
Heat Transfer
Estimating Heat Exchanger Area from Duty, U, and Temperature Difference
Heat-exchanger area is estimated from the sizing equation A = Q / (U · ΔTlm): divide the heat duty by the overall heat-transfer…