Evacuated Tube Solar Water Heater is Efficient
The efficiency of evacuated tube solar water heater is more than 90%,It means that is converts more that 90% of the sunlight hitting its
surface to heat that can be used to heat water.The evacuated tube solar water heater is also very cheap to renew.The evacuated tubes are made from ultra strong glass and heat resisted Pyrex with a double
wall construction.
The inner tube of the glass is coated on its outer surface with a absorbant coating and on its inner surface with a reflective coating Inside each tube,all the air present is removed making a vacuum and a copper heat pipe is located through the center of the tube. Most of the heat from the sun is absorbed by this sealed heat pipe which contains an anti-freeze type liquid.
As the heat rises, hot vapours from the antifreeze rise up to the top of the heat pipe where its copper connects with a header pipe throught which more antifreeze flows. This hot antifreeze then pumped through pipes inside the hot water tank with the end result that thte water gets hotter and the antifreeze cooler. The antifreeze then continues around the system and back out to the solar water heater to be reheated. The copper at the tip of the heat can reach very height degrees easily heating anwter to around 90 degrees celcius.
The efficiency of evacuated tube solar water heater is more than 90%,It means that is converts more that 90% of the sunlight hitting its
surface to heat that can be used to heat water.The evacuated tube solar water heater is also very cheap to renew.The evacuated tubes are made from ultra strong glass and heat resisted Pyrex with a double
wall construction.
The inner tube of the glass is coated on its outer surface with a absorbant coating and on its inner surface with a reflective coating Inside each tube,all the air present is removed making a vacuum and a copper heat pipe is located through the center of the tube. Most of the heat from the sun is absorbed by this sealed heat pipe which contains an anti-freeze type liquid.
As the heat rises, hot vapours from the antifreeze rise up to the top of the heat pipe where its copper connects with a header pipe throught which more antifreeze flows. This hot antifreeze then pumped through pipes inside the hot water tank with the end result that thte water gets hotter and the antifreeze cooler. The antifreeze then continues around the system and back out to the solar water heater to be reheated. The copper at the tip of the heat can reach very height degrees easily heating anwter to around 90 degrees celcius.
Flat VS Evacuated Tube Design
How evacuated tube solar water heater is different?
A solar water heater consists of a collector to collect solar energy and an insulated storage tank to store hot water. Based on the collector system, solar water heaters can be of two types. The first one being solar water heaters based on flat plate collectors in which the solar radiation is absorbed by using flat plate collectors instead of an insulated outer metallic box covered by glass sheet.
The second type being based on evacuated tube collectors in which the collector is made of double layer borosilicate glass tubes evacuated for providing insulation. This kind of solar water heater offers great efficiency compared to other solar wate heaters.
How evacuated tube solar water heater is different?
A solar water heater consists of a collector to collect solar energy and an insulated storage tank to store hot water. Based on the collector system, solar water heaters can be of two types. The first one being solar water heaters based on flat plate collectors in which the solar radiation is absorbed by using flat plate collectors instead of an insulated outer metallic box covered by glass sheet.
The second type being based on evacuated tube collectors in which the collector is made of double layer borosilicate glass tubes evacuated for providing insulation. This kind of solar water heater offers great efficiency compared to other solar wate heaters.