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Heat Exchanger Effectiveness Calculator

Computes heat exchanger thermal effectiveness (ε) using the NTU-effectiveness method for parallel-flow, counter-flow, and cross-flow configurations. Used by engineers to evaluate or size heat exchangers without knowing outlet temperatures.

Number of Transfer Units (NTU)

Capacity Rate Ratio (Cmin/Cmax)

Flow Configuration

Fill in the required fields to see your result.

Chemical Engineering

Gas Absorption Column Design Calculator

Design a packed gas absorption column by calculating the number of overall gas-phase transfer units (NOG) and total column height needed to achieve a target gas-phase separation. Used in scrubber design for air pollution control and chemical processing.

Inlet Gas Concentration (Y₁) (mole fraction)

Outlet Gas Concentration (Y₂) (mole fraction)

Henry's Law Constant (atm·L/mol)

Liquid to Gas Ratio (L/G)

Height of Transfer Unit (HOG) (ft)

Fill in the required fields to see your result.

Key differences

	Heat Exchanger Effectiveness Calculator	Gas Absorption Column Design Calculator
Category	Chemical Engineering	Chemical Engineering
Inputs required	3	5
Result	Heat Exchanger Effectiveness	Required Column Height (ft)
What it does	Computes heat exchanger thermal effectiveness (ε) using the NTU-effectiveness method for parallel-flow, counter-flow, and cross-flow configurations. Used by engineers to evaluate or size heat exchangers without knowing outlet temperatures.	Design a packed gas absorption column by calculating the number of overall gas-phase transfer units (NOG) and total column height needed to achieve a target gas-phase separation. Used in scrubber design for air pollution control and chemical processing.