What to Know About Evacuated Tube Solar Water Heater

Contrary to what some people believe we have seen solar water heating system appear long time ago. As technology advanced they became more efficient and now the efficiency offered by evacuated tube solar water heaters is over 90 percent. Basically this means that the sun’s energy is landing on the surface and is converted to heat at around 90%. You are to see incredibly low energy generating costs if you compare to a regular source.

Vacuum tubes or evacuated tubes are usually built from glass. Pyrex is used in most cases when we have touble wall systems. Glass noticed in inner tubes is coated in most cases on its outer surface with the use of absorbing coating. Inside all tubes air is removed in order to create one vacuum. Copper heat pipes are located right in the middle of these tubes. Such a sealed heat pipe is good as it also includes in most possible cases anti freeze liquid and can help in absorbing infra red radiation better.

One huge advantage that is obtained through the use of evacuted tubes is that they keep the solar water heating running well even when the temperatures fall below freezing point. Vacuums are to prevent your heat tubes from getting too cooled when the temperature is low. Also, thanks to evacuated tube systems you can also take advantage of the little sun power that we see during winter. In different cases you will be happy to know that the water can even reach 50 degrees if you use your solar water heater system.

The most important reason why the popularity of evacutated tubes was low in the past was availability for regular people. At first we only saw them in different commercial equipments, which were quite expensive and not affordable by regular people that wanted to use them. Nowadays it is a lot easier to buy such tubes and it is actually recommended to do so. The solar water system will become much more efficient if it also comes with included good evacuated tubes.