Pratique du Shadowing: How to Make Your Own Solar Water Heater - Apprendre l'anglais à l'oral avec YouTube

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This is the VOA Special English Technology Report.
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This is the VOA Special English Technology Report.
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Solar water heaters are used around the world and are not very difficult to build.
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The system we are going to describe is based on a design developed some years ago in Afghanistan.
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Since then, it has been built and used in many countries.
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It can heat 70 liters of water to 60 degrees Celsius.
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It can do this between sunrise and noon on a clear day with an average air temperature of 32 degrees Celsius.
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There are two parts to the solar water heater.
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One part is made of a sheet of metal painted black.
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surfaces become hotter in the sun than surfaces painted any other color.
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This black metal plate is called a collector.
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The collector is placed in contact with the water.
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There are several kinds of metal sheets that can be used for the collector.
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Corrugated metal will work very well.
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Corrugated sheets are often used as roofs on housing.
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Once the water is heated,
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it is kept hot with insulation material.
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This allows the water to stay warm for a long time.
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The second part of the solar water heater holds the water for the system.
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This storage tank can be a container that holds about 100 liters.
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Two rubber pipes are attached to the water storage tank.
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One pipe lets water flow into the system.
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The other lets water flow out.
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When the water heater is working correctly,
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water will flow from the storage tank to the collector and back again.
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You can use the hot water at the top of the tank for washing and cleaning.
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You can change the flow of water so that the temperature is hot or warm as desired.
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This solar water heater is easy to build and operate.
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It will last about two years before the rubber pipes need to be replaced.
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There is also something else you will need to make the solar water heater work, the sun.
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As you might expect, the heater will heat water only on sunny days.
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You can get more information about solar water heaters and other projects from Enterprise Works VITA.
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This group works internationally to fight poverty.
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The website is EnterpriseWorks.org.
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Choose the link for news and resources, then click on Publications.
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For VOA Special English, I'm Alex Villarreal.
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To read and listen to more stories about technology and for English teaching activities, go to voaspecialenglish.com.
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We're on Facebook, Twitter, and iTunes at VOA Learning English.

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Context & Background

This video, titled "How to Make Your Own Solar Water Heater," is part of the VOA Special English Technology Report series. In this episode, the speaker explains the principles and construction of a solar water heater that utilizes a design developed in Afghanistan. The purpose is to educate viewers about renewable energy solutions while providing practical information on building a solar water heating system. The discussion includes technical details that can help learners not only understand the process but also acquire relevant vocabulary and phrases in English.

Top 5 Phrases for Daily Communication

  • Solar water heater: A system that uses sunlight to heat water.
  • Collector: A component that absorbs sunlight to heat the water.
  • Insulation material: Material used to keep water hot over time.
  • Flow of water: The movement of water from one place to another within the system.
  • Hot water: Water that has been heated for uses such as washing and cleaning.

Step-by-step Shadowing Guide

Improving your English speaking skills through shadowing can be particularly effective with this video. Below is a step-by-step guide to help you tackle the dialogue:

  1. Watch the Video: Begin by watching the video without any subtitles. Pay attention to the pronunciation and intonation of the speaker.
  2. Listen and Repeat: Play the video again, this time pausing after each sentence or phrase. Try to mimic the speaker's voice and pace. This is a great way to improve English pronunciation while reinforcing your understanding of the content. Focus on the phrases provided above.
  3. Practice with Variations: Once you feel comfortable, try changing the structure of some sentences or replacing words with synonyms to create variations. This practice can enhance your shadow speech and help you use new vocabulary in different contexts.
  4. Record Yourself: Use your device to record your shadow speaking. Compare your recordings with the original to identify areas for improvement in pronunciation and fluency.
  5. Daily Practice: Aim for regular english speaking practice. Set aside a few minutes each day to shadow speak along with different parts of the video until you feel confident in your skills.

By following this guide, you can effectively use the engaging content of the video to improve your English speaking and pronunciation skills while also gaining knowledge about solar water heaters.

Qu'est-ce que la technique du Shadowing ?

Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.

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