build your own solar heater -How to Make Your Own Solar Water Heater

February 4, 2013 – 3:22 pm

** This is the VOA Special English Technology Report, from voaspecialenglish.com | http 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. E ‘can heat 70 liters of water at sixty degrees Celsius. This can be done between sunrise and noon on a clear day, with an average air temperature of 32 degrees Celsius.There are two parts to the solar water heater. One part is made of a sheet of black painted metal. 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 different types of sheets that can be used for the collector. Corrugated metal work very well. Sheets of corrugated cardboard are often used as roofs of housing.Once the water is heated, it is kept warm with insulating material. This allows water to remain hot for a long time. The second part of the solar water heater contains water for the system. This tank can be a container that contains about 100 liters. Two rubber hoses are attached to the water tank. A flow tube of water allows the system. The other flows out out.When water boiler is working properly, the water will flow from the tank to the collector and vice versa. You can use the hot water in the upper part of the Video Rating: 4 / 5

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  1. One Response to “build your own solar heater -How to Make Your Own Solar Water Heater”

  2. Why is she speaking´╗┐ so slow?

    By iLEGENDARYx on Feb 4, 2013

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