FieldengThermal & HVAC
HVAC Sensible Capacity from Airflow
Sensible coil capacity from airflow and ΔT (or return − supply). Same physics as THERM-04, labeled in Btu/h and tons.
Thermal & HVAC
Sensible coil capacity from airflow and ΔT (or return − supply). Same physics as THERM-04, labeled in Btu/h and tons.
App id: THERM-22. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
Q = ρ V̇ cp ΔT; tons = Q / 12,000 Btu/hInputs
| Name | Unit |
|---|---|
| Airflow (camera) | ft3/min |
| ΔT (optional if supply/return) (optional) | deltaF |
| Return temperature (optional) | F |
| Supply temperature (optional) | F |
| Air density (optional) | kg/m3 |
| Specific heat (optional) | J/kg-K |
Outputs
| Name | Unit |
|---|---|
| Sensible capacity (hero result) | Btu/h |
| Sensible tons | ton |
| ΔT used | deltaF |
Diagnose
This tool does not attach diagnose observations.
Assumptions
- Enter ΔT, or return and supply. Cooling: return warmer than supply gives a positive load.
Provenance
- Sensible only — latent coil load is THERM-05. Standard-air defaults match THERM-04.