question archive Consider a cold air-standard Otto cycle
Consider a cold air-standard Otto cycle
Subject:Mechanical EngineeringPrice: Bought3
Consider a cold air-standard Otto cycle. Operating data at principal states in the cycle are given in the table below. The states are numbered as in Fig. 9.3. The heat rejection from the cycle is 86 Btu per lb of air. Assuming cy 5
0.172 Btu/lb ? 8R, determine
(a) the compression ratio.
(b) the net work per unit mass of air, in Btu/lb.
(c) the thermal efficiency.
(d) the mean effective pressure, in lbf/in.2
|
State |
T (8R) |
p (lbf/in.2) |
|
1 |
500 |
47.50 |
|
2 |
1204.1 |
1030 |
|
3 |
2408.2 |
2060 |
|
4 |
1000 |
95 |
