Batch Tank Heating — Condensate Load

The steam needed to bring a tank batch up to temperature — heat-up and hold loads given separately.

Unit system

Inputs

Batch mass (kg)

Specific heat of the product

Starting temperature

Target temperature

Heat-up time

Tank outer surface area

Tank surface heat transfer coefficient

Insulated tank 1–3, bare steel tank 10–15 W/(m²·K).Ambient temperature

Steam pressure (absolute)

Safety factor

Heat-up load

640.7kg/h

Holding load

6.075kg/h

Trap capacity (with safety factor)	961.1 kg/h
Heat-up duty	379.7 kW
Total energy per batch	379.7 kWh
Surface loss at target	3.6 kW
Steam temperature	143.6 °C
Selection note	The heat-up load is several times the hold load — size the coil and trap on HEAT-UP, or the target is never reached.

The surface loss is taken to rise linearly during heat-up, so its mean is half the loss at target.
Agitator power and the tank metal itself are neglected; for heavy-walled tanks add the metal mass to the batch.

A PDF carrying the inputs, results, assumptions and the source. A one-time code is sent to your address.

Results are for engineering pre-assessment and are not a product selection commitment. Final responsibility rests with the user.