how would you find the correct formula for the temp at state 3 and 4. i found it for 1 and 2
First, I would ask that when you have a question try to be specific and do not abbreviate the words, because many members here are from different countries and areas.
For an air standard cycle, whose fuel is Diesel:
To calculate the temperature in the cycle expansion (3), it will be the point of greatest pressure and higher temperature, use the formula:
T3 = T2 + (Q1 / (m * cp);
Q1 = heat input
T2 = temperature cycle 2
m = mass
cp = specific heat of gas at constant pressure
To obtain the temperature in the cycle of the removal of heat (4) you must have the values of compression ratio in cycles 3 (V3) and 4 (V4) and the adiabatic constant of air (k), and the temperature in the expansion cycle (3).
T4 = T3 * (V3/V4) ^ (k-1);
T3 = temperature in cycle 3
V3 = volume in the cycle 3
V4 = volume in the cycle 4
k = constant adiabatic air
If you have any questions about the theory of everything, or to obtain Q1 or mass simply send an email. I am new in this form too and do not know to use mathematical symbols, if someone can explain me please tell me.
I hope this can help.
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