Where does deposited heat per kilogram come from?

Use a validated energy balance or measured bath heat uptake for the same charge basis, including relevant fixtures and transformations.

Can I subtract active cooling from the heat input?

This calculation gives no cooling credit. Evaluate the heat exchanger and time-dependent cooling separately.

Is the resulting mass an approved quench load?

No. It is a mixed-bath heat balance. Apply the equipment ratings and qualified process limits, including agitation and local temperature behavior.

What happens when the bath is already at its limit?

Thermal headroom and charge capacity are zero. Restore the approved starting condition before another heat input.

Heat Treatment, Furnaces & Thermal Processing calculator

Quench Bath Thermal Capacity Calculator

Estimate charge mass that would use the bath’s entered thermal headroom. Supply working bath mass, specific heat, temperature limits and validated heat deposited per kilogram of charge.

What this calculator does

Estimate charge mass from bath thermal headroom and the entered heat deposited per kilogram.

Formula used

Bath headroom = bath mass × specific heat × (maximum temperature − starting temperature)
Thermal charge capacity = bath headroom ÷ heat deposited per charge kilogram
Planned heat input = planned charge mass × heat deposited per kilogram
Mixed bath temperature = starting temperature + planned heat input ÷ (bath mass × specific heat)
Charge margin = thermal charge capacity − planned charge mass

Inputs explained

Working Bath Mass: Actual working liquid mass from level and verified density.
Bath Specific Heat: Supplier value over the evaluated bath temperature interval.
Starting Bath Temperature: Mixed bath reading immediately before this charge.
Maximum Bath Temperature: Approved upper bath temperature for this process.
Heat Deposited per Charge Kilogram: Validated bath heat input per kilogram, including fixtures and transformations.
Planned Charge Mass: Charge mass on the same basis as deposited heat.

How to use the result

Best suited to bath thermal headroom screening, charge mass comparisons.
Assumes a mixed bath without boiling or other bath phase change. Does not size agitation, heat exchangers or quench severity.

Current U.S. benchmarks

Industrial electricity averages 9.77 cents per kWh across the U.S. (EIA, Jul 2026), up 4.7% from a year earlier. Energy-intensive steps carry this directly into unit cost.

Common questions

Where does deposited heat per kilogram come from? Use a validated energy balance or measured bath heat uptake for the same charge basis, including relevant fixtures and transformations.
Can I subtract active cooling from the heat input? This calculation gives no cooling credit. Evaluate the heat exchanger and time-dependent cooling separately.
Is the resulting mass an approved quench load? No. It is a mixed-bath heat balance. Apply the equipment ratings and qualified process limits, including agitation and local temperature behavior.
What happens when the bath is already at its limit? Thermal headroom and charge capacity are zero. Restore the approved starting condition before another heat input.

Last reviewed 2026-10-06.