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[report整理] SENEWS-2011-04-25

提高英语听力能力 找对方法很重要!

[Homework]【整理】SENEWS-2011-04-25

Solo water heaters are used around the world, and are not very difficult to build. The system we are going to describe is based on the design developed some years ago in Afghanistan. Since then, it has been built and used in many countries. It can heat seventy liters of water to sixty degrees ///. It can do this between sunrise and noon on the clear day with average air temperature of thirty two ///.

There are two parts of the solo water heater. One part is made of a /// of metal painted black. Black surfaces, they can hotter in the sun than surface painted any other color. This black metal plat is called a ///. The /// is placed in contact with the water.


There are several kinds of metal /// that can be used for the ///. /// metal will work very well. /// /// are often used as roofs on housing.


Once the water is heated, it is /// hot with ///  material. This allows the water to stay warm for a long time.


The second part of the solo water heater holds the water for the system. This storage tank can be a /// that holds about one hundred liters.


Two /// pipes are ///  to the water storage tank. One pipe lets water flow into the system, the other lets water flow out. When the water heater is working correctly, water will flow from the storage tank to the collector and back again.


You can use the hot at the top of the tank for washing and cleaning. You can change the flow of water so that the temperature is hot or warm as design.


This solo water heater is easy to built and operated. It is less about two years before the robber pipes need to be replaced.


There is also something else you will need to make the solo water heater work, the sun. As you might imagine, the heater will heat water only on sunny days.


You can get more information about solo water heaters and other project from Inter Price Works ////. This group works internationally to fight porpety. The website is interpriceworks.org. Choose the link for news and resources then click on publications.

This post was generated by put listening repetition system,  Check the original dictation thread!
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