Water heat recycling

High school (ages 12+)
Environment & Earth

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/water-heat-recycling

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 scientific principle?Application of heat transfer principles (conduction and convection) via a heat exchanger
2. What is the primary application?Reducing energy demand for water heating in residential, commercial, and institutional buildings
3. How does a drain water heat recovery unit work?The unit has pipes that carry warm wastewater next to pipes that bring in cold water. Heat moves through the pipe walls and warms the cold water, so the heater doesn’t have to work as hard.
4. Why is water heat recycling good for the environment?Because it saves energy, it means fewer fossil fuels are burned and less carbon dioxide is released into the air. This helps protect the planet from climate change.

Heat Exchanger: A device designed to efficiently transfer thermal energy between two or more fluids or between a solid surface and a fluid.
Potable Water: Water that is safe to drink and suitable for domestic use, such as cooking and bathing.
Carbon Footprint: The total amount of greenhouse gases generated by our actions, directly or indirectly.