purified dual cycle

1. Sal College Of Engineering
Prepared by:
Somesh Patani(131130119052)

2. Dual cycle

3. Process 1  2 Isentropic compression
Process 2  2.5 Constant volume heat addition
Process 2.5  3 Constant pressure heat addition
Process 3  4 Isentropic expansion
Process 4  1 Constant volume heat rejection
Dual Cycle
Qin
Qin
Qout
1
1
2
2
2.5
2.5
3
3
4
4
)()()()( 5.2325.25.2325.2 TTcTTchhuu
m
Q
pv
in


4. Thermal Efficiency
)()(
11
5.2325.2
14
hhuu
uu
mQ
mQ
in
out
cycle
Dual



 







 
1)1(
11
1 1
c
k
c
k
cconst
Dual
rk
r
rv 


1
1
1 
 kOtto
r

 
 







 
1
111
1 1
c
k
c
k
const c
Diesel
r
r
krV

Note, the Otto cycle (rc=1) and the Diesel cycle (=1) are special cases:
2
3
5.2
3 andwhere
P
P
v
v
rc  

5. Thank you…