Question

A Student cycle engine is analyzed using the cold air-standard method. Given the definition of each process in the cycle, determine the thermal efficiency of the engine for each set of defined ratios listed below. All ratios are given as the larger value over the smaller one.

--Given Values--
Process 1-2 = Isentropic compression & volume ratio=r_v12
Process 2-3 = Isobaric compression & volume ratio=r_v23
Process 3-4 = Isometric heat addition & temperature ratio=r_T34
Process 4-5 = Isobaric heat addition & temperature ratio=r_T45
Process 5-6 = Isobaric expansion
Process 6-1 = Isometric cooling

a) Enter the equation for W12: (m,cp,cv,T1,T2,T3,T4,T5,T6)
        Your Answer = m*cv*(T1-T2) Correct!

b) Enter the equation for Qin(m,cp,cv,T1,T2,T3,T4,T5,T6,rV12,rV23,rT34,rT45)
        Your Answer = Incorrect.

c) Enter the equation for (positive) Qout(m,cp,cv,T1,T2,T3,T4,T5,T6,rV12,rV23,rT34,rT45)
        Your Answer = Incorrect.

d) Enter the equation for T2(k,T1,rV12,rV23,rT34,rT45)
        Your Answer = T1*(rV12)^k-1 Correct!

e) Enter the equation for T3(k,T1,rV12,rV23,rT34,rT45)
        Your Answer = Incorrect.

f) Enter the equation for T4(k,T1,rV12,rV23,rT34,rT45)
        Your Answer = Incorrect.

g) Enter the equation for T5(k,T1,rV12,rV23,rT34,rT45)
        Your Answer = Incorrect.

h) Enter the equation for T6(k,T1,rV12,rV23,rT34,rT45)
        Your Answer =

i) Enter the equation for thermal efficiency, η(k,rV12,rV23,rT34,rT45)
        Your Answer =

PLEASE ANSWER THE MISSING ANSWERS, AND A PV DIAGRAM WOULD HELP A LOT,

WILL RATE, I'M DESPERATE!

that’s how it appears in the homework, is the set up wrong?

Answer 1