You cannot see this page without javascript.

How to Make Your Own Solar Water Heater

조회 수 197 추천 수 0 2014.03.30 21:17:42

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 Choose the link for News & Resources, then click on Publications. For VOA Special English, I'm Alex Villareal. To read and listen to more stories about technology and for English teaching activities, go to We're on Facebook, Twitter and iTunes at VOA Learning English.

영어듣기, 영어회화, 기초영어,영어공부혼자하기,무료기초영어,완전기초영어,성인기초영어,기초영어공부,기초영어회화,왕초보영어공부,직장인영어공부,온라인영어회화,영어회화독학


인조이 잉글리시 - EnjoyEnglish.Co.Kr 

호시우행(虎視牛行): 판단은 호랑이처럼 예리하게, 행동은 소처럼 신중하고 끈기있게!

영어공부 전반, 진로진학 자료를 업로드하겠습니다. 조금이나마 도움이 되었으면 좋겠습니다.

가끔 인사글이라도 남겨주시고 유익하고 잼있는 글 올려주세요.

엮인글 :
문서 첨부 제한 : 0Byte/ 10.00MB
파일 크기 제한 : 50.00MB (허용 확장자 : *.*)

List of Articles
번호 제목 글쓴이 조회 수
46 Mobile Devices' Location Tracking Raises Privacy Concerns chanyi 274
45 Seeing Stars: Amateur Astronomers Aim Thousands of Eyes at the Universe chanyi 198
44 A Whole New World, Brought to Us by Gizmos and Gadgets chanyi 240
43 Building Art Out of Legos chanyi 200
42 How People Like Levi Strauss Put Their Mark on the American West chanyi 266
41 A False Sense of Security on the Internet? chanyi 246
40 Students Compete to Find Tech Solutions for World Problems chanyi 269
39 World Leaders Urged to Meet Development Goals by 2015 chanyi 165
38 Surviving a Drought: A Farmer's Old-Fashioned Lessons chanyi 240
37 How an Allowance Helps Children Learn About Money chanyi 294
36 South Korea Tops 'Information Society' Report chanyi 243
35 A Shelter for Abused Animals, Where Volunteers Also Find Healing chanyi 129
» How to Make Your Own Solar Water Heater chanyi 197
33 Living in a World With Facial Recognition chanyi 139
32 Three Sisters Follow in the Flight Path of a Family of Pilots chanyi 190
본 사이트에서는 회원분들의 게시된 이메일 주소가 무단으로 수집되는 것을 거부합니다. 게시된 정보 및 게시물의 저작권과 기타 법적 책임은 자료제공자에게 있습니다. 이메일 / 네이트온 Copyright © 2001 - 2016 All Right Reserved.