Volume
V = C
Pressure
p = C
T=C
s = C
pVn = C
Relations
Heat, c
| Process | Constant Volume V = C |
Constant Pressure p = C |
Isothermal T=C |
Isentropic s = C |
Polytropic pVn = C |
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| p, V, T Relations |
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| Specific Heat, c |
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| C | A constant |
| c | Specific heat |
| cv | Specific heat at constant volume |
| cp | Specific heat at constant pressure |
| cn | Specific heat of polytropic process |
| H | Enthalpy of a quanty w of substance |
| h | Specific enthalpy |
| J | Joule's constant 777.9 |
| k | Isentropic exponent. Ratio cp/cv |
| n | Polytropic exponent |
| p | Pressure |
| Q | Transfered heat |
| R | Gas constant = pv/T |
| S | Entropy of a quanty w of a substance |
| s | Specific entropy |
| T | Temperature absolute scale |
| U | Internal energy of a quanty w of a substance |
| u | Specific internal energy |
| V | Volume of quanty w of a substance |
| v | Specific volume |
| w | Weight of substance |