Calculator · Thermal Engineering
Specific Heat & Heat-Capacity Ratio
Two independent values fix an ideal gas's R, cp, cv and γ. Tick the values you know; if you supply more than two, they are checked against each other and a conflict is reported rather than one being silently chosen.
Inputs
Known values: 2. Unticked fields are ignored and derived instead.
Results
Heat-capacity ratio γ = cp/cv
1.4
| R = cp − cv | 287 J/(kg·K) |
|---|---|
| cp | 1004.5 J/(kg·K) |
| cv | 717.5 J/(kg·K) |
| γ | 1.4 |
Assumptions
- · ideal gas
- · constant specific heats
Technical reference
R = cp − cv
γ = cp / cv
cp = γR/(γ − 1), cv = R/(γ − 1)
- R
- specific gas constant[J/(kg·K)]
- cp
- specific heat at constant pressure[J/(kg·K)]
- cv
- specific heat at constant volume[J/(kg·K)]
- γ
- heat-capacity ratio, > 1[-]
Redundant values are compared with a relative tolerance of 10⁻⁶; any disagreement is refused, not averaged.