Air Temperature Differential

ΔT = T1 − T2 with sign preserved. Subtracts absolute temperatures so mixed °C/°F is valid.

Thermal & HVAC

ΔT = T1 − T2 with sign preserved. Subtracts absolute temperatures so mixed °C/°F is valid.

App id: THERM-03. 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

ΔT = T1 − T2

Inputs

Name	Unit
Temperature 1 (supply / hot) (camera)	`C`
Temperature 2 (return / cold) (camera)	`C`

Outputs

Name	Unit
ΔT (T1 − T2) (hero result)	`deltaC`
Absolute ΔT	`deltaC`

Diagnose

Observations are context. They do not pass or fail a structure. See Diagnose.

When	Observation	Severity
`\|delta k\| < 2`	Small temperature difference	info
`\|delta k\| > 25`	Large air ΔT	caution

Assumptions

A 20 °F difference is 11.111 K, not a converted 20 °C reading.

Provenance

Cooling coil: enter return as T1 and supply as T2 for a positive ΔT.