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We consume fossil fuels at a greater rate than we have ever had over the past 50 years. That demand is fueled by the increase of cars on the street, the number of planes that take to the air and the number of homes that need electricity. Sadly, we will have depleted these resources by the end of this century which is why we have to come up with other ways to get power and solar energy may be the future. Solar energy is simply extracting the sun’s energy for power. Just to tell you how powerful the sun is, it can burn scrublands and give you the sunburn if you are out in the sun without any protection. In fact, the Greeks and the Chinese used this to set fire until the 1880’s by Charles Fritts made the first solar cell Instead of using a heater to warm up the home, sunlight can be used to control the temperature. You will just need large windows and shades to control the amount of sunlight that will go inside and keep the heat absorbed during the day to remain at night. Solar energ...

Evacuated tube solar collectors are extensively and widely used because it’s good thermal insulation characteristics and insensitivity to the direction of sunlight. There are three common types of evacuated tube solar collectors, which are (a) Water-in glass evacuated tube solar collector, (b) U-type evacuated tube solar collector and (c) evacuated tube heat pipe solar collector . The function of an evacuated tube heat pipes is to absorb the incident solar radiation over the evacuated tube and to transfer as much of that absorbed energy in the form of heat to the inside heat pipe, which in turns heats up a secondary medium, e.g. water or oil, that is in contact with the tip of the heat pipe. The evacuated tube consists of two concentric tubes, i.e. an inner and an outer tube, such that the air in between the tubes is evacuated, and then the tubes are sealed together at the end. The vacuum between the pipes plays an important role in the thermal performance of the evacuated tubes,...