Turboexpander

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/turboexpander

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the operational temperature threshold?Frequently achieves temperatures of -150 degrees Celsius or lower
2. What is the power generation capacity?Scalable from approximately 750 Watts to 7.5 Megawatts (equivalent to ~10,000 hp)
3. How does a turboexpander cool gas?When the gas rushes through the turboexpander, it expands quickly and loses internal energy. That drop in energy makes the gas become very cold, sometimes below -150°C.
4. Why do turboexpanders help make natural gas liquids?The cooling from a turboexpander turns parts of natural gas into liquids such as ethane, propane, and butane. These liquids are then used to make plastics and other useful products.

Isentropic Expansion: An idealized thermodynamic process where a gas expands reversibly and adiabatically, maximizing work output and cooling.
Cryogenic Temperatures: Extremely low temperatures, typically below -150 degrees Celsius (-238 degrees Fahrenheit), used for liquefying gases.
Natural Gas Liquids (NGLs): Hydrocarbon components found in natural gas that can be separated as liquids, such as ethane and propane.
Turbomachinery: Rotary mechanical devices that transfer energy between a fluid and a rotor, like turbines and compressors.