About The Chiller Tonnage Estimator

The Chiller Tonnage Estimator converts cooling load or chilled-water flow and delta T into refrigeration tons and estimated input power from COP.

How to Use the Chiller Tonnage Estimator Online

1. Select whether you want to enter direct cooling load or calculate load from flow and delta T.
2. Enter the active load or flow fields plus chiller COP.
3. Run the calculation to estimate kW, TR, and input power.
4. Check the result against manufacturer selections and project diversity assumptions.

Choosing Options Correctly

Cooling load mode:
Use this when the cooling load in kW is already known.

Flow and Delta T mode:
Use this when chilled-water flow and temperature difference are known.

Common Use Cases

• Estimate required chiller tonnage during concept design.
• Convert kW cooling load into TR.
• Estimate input power from a target COP.

Quick FAQ

Does this select a chiller model?
No. It estimates refrigeration tons; model selection needs manufacturer data, flow, temperatures, part load, and controls.

What is TR?
TR means tons of refrigeration. One TR is commonly treated as 12,000 BTU/h.

What inputs affect tonnage?
Cooling load, flow, temperature difference, and safety factors can all affect the required tonnage.

Should I oversize from this estimate?
No. Oversizing can reduce efficiency and control quality. Use proper load calculations before selection.