Heat Exchanger Sizing Calculator

Counter-flow heat exchanger assumed. Cold fluid outlet temperature is determined by energy balance. Approach temperature constrains cold-side exit. U values: H2/H2 150 W/m²K, H2/water 500 W/m²K, H2/air 50 W/m²K.

Cold-side fluid type

Hot fluid inlet temperature (°C)

°C

Hot fluid outlet temperature (°C)

°C

Cold fluid inlet temperature (°C)

°C

Hot fluid flow rate (kg/hr)

kg/hr

Target approach temperature (°C)

°C

Heat Exchanger Results

-
Cold Outlet Temperature
°C

-
Heat Duty
kW

LMTD

°C

UA Product

kW/°C

Indicative Area

m²

U Value Used

W/m²K

Temperature Profile Along Exchanger

Counter-flow configuration shown. Hot fluid enters left, cold fluid enters right.