Total heat rejected by compressor = Heat rejected by compression + Heat rejected by intercooler
Heat rejected by compression :
Q = (y - n)/(y - 1) • W
Q = (y - n)/(y - 1) • R(T2 - T1)/(n - 1) ... (i)
Heat rejected by intercooler :
Q = Cp(T2 - T1) ... (ii)
Sum of (i) and (ii) :
Q = (i) + (ii)
Q = (y - n)/(y - 1) • R(T2 - T1)/(n - 1) + Cp(T2 - T1) ... (iii)
Remember that :
R = Cp - Cv
y = Cp/Cv
So :
R = yCv - Cv
R = Cv(y - 1) ... (iv)
Now, subtitute (iv) to (iii) :
Q = (y - n)/(y - 1) • Cv(y - 1)(T2 - T1)/(n - 1) + Cp(T2 - T1)
Q = (y - n)/(n - 1) • Cv(T2 - T1) + Cp(T2 - T1)
Q = [Cp + Cv • (y - n)/(n - 1)] • (T2 - T1)
Hope this help
Answer:
time is 2 hour and 32 min
Explanation:
given data
normal average speed = 105 km/h = (65 mi/h)
trip time takes = 1 h and 50 min = 1.83 hr
average speed with heavy traffic = 75.0 km/h = (47 mi/h )
to find out
How much longer does the trip take
solution
we know that here total distance that is express as
Total distance = Average speed × Total time ..................1
Total distance = 105 × 1.83
Total distance = 192.15 km ( distance between San Diego and Los Angeles )
and when average speed 75 km/h
time will be
time =
time =
time = 2.56 hr
so time is 2 hour and 32 min
Answer:
4.2
Explanation:
The "allowance" is the difference between the maximum shaft size and the minimum hole size.
maximum shaft = C +D = 8.5 +0.1 = 8.6
minimum hole = A -B = 4.8 -0.4 = 4.4
Allowance = 8.6 -4.4 = 4.2
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For an interference fit, the allowance is negative.