（第６回）太陽光で温水をつくる方法

How to Make Your Own Solar Water Heater
太陽光で温水をつくる方法

こんにちは。
今日の話題は、太陽光を使った温水器の話題です。
日本でも屋根の上に太陽光温水器を付けている家がありますね。
その小型版が、今、世界中で活躍しているそうです。

それでは、単語から
[Words]
describe 描いた
surface 表面
metal 金属
collector 集光器
Corrugated metal 波形の金属
insulation material 断熱性の素材
container 容器


それでは、放送を聞いてみましょう。

[Sound - Web]
http://www.voanews.com/templates/mediaDisplay.html?mediaPath=http://www.voanews.com/MediaAssets2/learningenglish/dalet/se-tech-solar-water-heaters-21apr11.Mp3&mediaContentID=120568959

[Sound - MP3]
http://www.voanews.com/MediaAssets2/learningenglish/dalet/se-tech-solar-water-heaters-21apr11.Mp3

[Transcript]
This is the VOA Special English Technology Report.

Solar water heaters are used around the world and are not very difficult
to build. The system we are going to describe is based on a 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 Celsius. It can do
this between sunrise and noon on a clear day with an average air
temperature of thirty-two degrees Celsius.

There are two parts to the solar water heater. One part is made of a
sheet of metal painted black. Black surfaces become hotter in the sun
than surfaces painted any other color.

This black metal plate is called a collector. The collector is placed in
contact with the water.

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

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

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

Two rubber pipes are attached 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 water
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 desired.

This solar water heater is easy to build and operate. It will last about
two years before the rubber pipes need to be replaced.

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

You can get more information about solar water heaters and other
projects from EnterpriseWorks/VITA. This group works internationally to
fight poverty. The website is enterpriseworks.org. Choose the link for
News & Resources, then click on Publications.

And that's the VOA Special English Technology Report. Tell us if you've
ever built a solar water heater or have ideas for improvements. Post
your comments at voaspecialenglish.com, where you can also find
transcripts, MP3s and podcasts of our programs. We also offer English
teaching activities in the Classroom section of our site. I'm Steve
Ember.


どうでしたか。
それでは、記事に関しての質問です。
(Q.1) 集光器の表面は何色ですか。
(Q.2) 温水器には何本の管が付いていますか。
(Q.3) 温水器のどこから温水を取り出しますか。

(A.1) 黒色
(A.2) 温水器には２本のゴム管が付いています。
(A.3) 温水タンクの上部から取り出します。


(Q.1) What color is the collector's surface?
(Q.2) How many pipes does the solar water heater have?
(Q.3) Where do you get hot water from the solar water heater?

(A.1) Black.
(A.2) The solar water heater has two rubber pipes.
(A.3) From the top of the tank.

いかがでしたでしょうか。
32度の外気温で、60度位の温水ができるというのですから、驚きですね。
メンテナンスが簡単なのもいいですね。

それでは。
また次回。
See you next time.