Answer:
, 
Explanation:
The ideal efficiency of the Diesel cycle is given by this expression:
![\eta_{th} = \left\{1 - \frac{1}{r^{k-1}} \cdot \left[\frac{r_{c}^{k}-1}{k\cdot (r_{c}-1)} \right]\right\}\times 100\%](https://tex.z-dn.net/?f=%5Ceta_%7Bth%7D%20%3D%20%5Cleft%5C%7B1%20-%20%5Cfrac%7B1%7D%7Br%5E%7Bk-1%7D%7D%20%5Ccdot%20%5Cleft%5B%5Cfrac%7Br_%7Bc%7D%5E%7Bk%7D-1%7D%7Bk%5Ccdot%20%28r_%7Bc%7D-1%29%7D%20%5Cright%5D%5Cright%5C%7D%5Ctimes%20100%5C%25)
Where 
and 
are the compression and cutoff ratios, respectively.
![\eta_{th} = \left\{1-\frac{1}{18^{0.4}}\cdot \left[\frac{1.5^{1.4}-1}{1.4\cdot (1.5-1)} \right] \right\}\times 100\%](https://tex.z-dn.net/?f=%5Ceta_%7Bth%7D%20%3D%20%5Cleft%5C%7B1-%5Cfrac%7B1%7D%7B18%5E%7B0.4%7D%7D%5Ccdot%20%5Cleft%5B%5Cfrac%7B1.5%5E%7B1.4%7D-1%7D%7B1.4%5Ccdot%20%281.5-1%29%7D%20%5Cright%5D%20%5Cright%5C%7D%5Ctimes%20100%5C%25)
The heat addition to the cycle is:
The temperature at state 2 is:
And the temperature at state 3 is:
Answer:
Steam Engine
Explanation:
It stopped being produced due to other types of engines being much more efficient.
Answer:
Bottom-up Estimation
Explanation:
Bottom-up estimation is a type of project cost estimation that considers the cost of individual project activities and finally sums them up or finds the aggregates. The summation gives an idea of what the entire project will cost.
This is an effective way of estimating the cost of a project as it evaluates the costs on a wholistic basis. It also considers the tiniest details during the estimation process. The process moves from the simpler details to the more complicated details.
