Physics

Sensible Heat Calculator

Find the sensible heat load of an airflow (HVAC).

Calculated Output

Sensible heat (BTU/hr) 8,640

Formula: Q = 1.08 · CFM · ΔT

Step-by-Step Breakdown

1. Values used:

2. Airflow = 400 CFM

3. Temperature difference = 20 °F

5. Sensible heat = 8,640BTU/hr

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The math behind it

Q (BTU/hr) = 1.08 × CFM × ΔT(°F). The 1.08 factor bundles air density and specific heat at standard conditions.

400 CFM with a 20 °F rise → 8640 BTU/hr.

Sensible vs latent heat?

Sensible changes temperature; latent changes moisture (humidity).