Enrico Fermi (1901–1954) Problems (EFP). Enrico Fermi was an Italian physicist who received the Nobel Prize for his work on nuclear processes. Fermi was famous for his “Back of the Envelope Order of Magnitude Calculation” to obtain an estimate of the answer through logic and then to make reasonable assumptions. He used a process to set bounds on the answer by saying it is probably larger than one number and smaller than another, and arrived at an answer that was within a factor of 10.
See http://mathforum.org/workshops/sum96/interdisc/sheila2.html.
Enrico Fermi Problem
- (a) EFP #1. How many piano tuners are there in the city of Chicago? Show the steps in your reasoning.
- 1. Population of Chicago_____
- 2. Number of people per household_____
- 3. Etc._____
An answer is given on the CRE Web site under Summary Notes for Chapter 1.
- (b) EFP #2. How many square meters of pizza were eaten by an undergraduate student body population of 20,000 during the Fall term 2016?
- (c) EFP #3. How many bathtubs of water will the average person drink in a lifetime?
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Chapter 1 Solutions
Elements of Chemical Reaction Engineering (5th Edition) (Prentice Hall International Series in the Physical and Chemical Engineering Sciences)
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- (30) 6. In a process design, the following process streams must be cooled or heated: Stream No mCp Temperature In Temperature Out °C °C kW/°C 1 5 350 270 2 9 270 120 3 3 100 320 4 5 120 288 Use the MUMNE algorithm for heat exchanger networks with a minimum approach temperature of 20°C. (5) a. Determine the temperature interval diagram. (3) (2) (10) (10) b. Determine the cascade diagram, the pinch temperatures, and the minimum hot and cold utilities. c. Determine the minimum number of heat exchangers above and below the pinch. d. Determine a valid heat exchange network above the pinch. e. Determine a valid heat exchange network below the pinch.arrow_forwardUse this equation to solve it.arrow_forwardQ1: Consider the following transfer function G(s) 5e-s 15s +1 1. What is the study state gain 2. What is the time constant 3. What is the value of the output at the end if the input is a unit step 4. What is the output value if the input is an impulse function with amplitude equals to 3, at t=7 5. When the output will be 3.5 if the input is a unit steparrow_forward
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