Chapter 16, Problem 16.10P

(a)

Interpretation Introduction

Interpretation:

The average time which is required to obtain gasoline at $23$ Center County service stations is to be calculated.

Concept introduction:

In a batch reactor, the length of time possess by all the atoms of a material inside the reactor is same. The time spent by the atoms within the reactor is termed as the residence time. The average time is calculated by the formula shown below.

    $\text{Average}\text{Time}=\frac{\text{Total}\text{Time}}{\text{Number}\text{of}\text{Intervals}}$

(b)

Interpretation Introduction

Interpretation:

The time taken by the people who are waiting in line to obtain gasoline at $23$ Center County service stations is to be calculated.

Concept introduction:

In the reactor, different molecules have dissimilar residence time. Some molecules have short duration of time in the reactor, whereas other have long duration, The mean residence time given the idea of calculating the mean of their residence times. It is calculated by the formula shown below.

    $\overline{t}=\frac{{\displaystyle \sum t_i{N}_i\Delta t_i}}{{\displaystyle \sum N_i\Delta t_i}}$

(c)

Interpretation Introduction

Interpretation:

Weather one is able to generalize the results regarding the prediction of the waiting time that is required to enter a five-story parking garage with a 4-hour time limit is to be stated.

Concept introduction:

In the reactor, different molecules have dissimilar residence time. Some molecules have short duration of time in the reactor, whereas other have long duration, The mean residence time given the idea of calculating the mean of their residence times. It is calculated by the formula shown below.

    $\overline{t}=\frac{{\displaystyle \sum t_i{N}_i\Delta t_i}}{{\displaystyle \sum N_i\Delta t_i}}$