ធនធាន ដាក់​​​ស្លាក: Solar

22 items found (Showing 21 - 22)

  1. Solar Still

    01 មករា 1980 A solar still is a device that uses energy from the sun to purify salt- or brackish water. Solar stills (as shown in Figure 1) can be easy to construct and maintain. Depending upon their size, they can provide water for many uses. And in desert areas where sunshine is plentiful and water is not,...
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  2. Solar Water Heater

    01 មករា 1986 Hot water is not always necessary, and in warm climates it may be relatively easy to do without. It is, however, more effective than cold water for many purposes. Even so, in some areas hot water is not used because fuel is so expensive it is used only for essential tasks. A solar heater can...
    Solar Water Heater VITA Water Heating Solar Downloads Power Resources