Thursday, October 6, 2016
It is possible to harness the energy from the sun and convert it into either electricity or heat using PV (photo-voltaic) or ST (solar thermal) technologies respectively. Solar collectors transform solar radiation into heat and transfer that heat to a medium (water, solar fluid, or air). Then solar heat can be used for heating water, backup heating systems or for heating swimming pools.
While recognizing the advantages of using natural light, the inventors also understood the drawbacks: the Sun's energy carries heat, as well as light, and it's important to separate the two if you want to make a building light without making it hot at the same time.
The efficiency of a solar collector is defined as the quotient of usable thermal energy versus received solar energy. Besides the thermal loss, there always is the optical loss as well. The conversion factor or optical efficiency h0 indicates the percentage of the solar rays penetrating the transparent cover of the collector (transmission) and the percentage being absorbed. Basically, it is the product of the rate of transmission of the cover and the absorption rate of the absorber.
If used correctly solar day and night lighting can provide free, high-quality lighting, and do it with less heat generation inside the house than conventional electric lighting.
The efficiency of the solar collectors is measured by the amount of sunlight hitting them, which in turn gets converted into electricity. Solar collectors with the small surface area are highly efficient.
However, there is a barrage of cheap solar collectors being imported and sold, that do not comply with the flag statute. This is bad for a number of reasons. Imported stuff is cheaply made and more importantly, the designs, materials, colors, and methods do not compare well with the better quality, longer-lasting, and correctly designed solar collectors made by American manufacturers. The Flag Company Inc specialized in flags and flagpole lightings offered a special edition of solar-powered collectors to provide innovative solutions for individual projects.
While recognizing the advantages of using natural light, the inventors also understood the drawbacks: the Sun's energy carries heat, as well as light, and it's important to separate the two if you want to make a building light without making it hot at the same time.
The efficiency of a solar collector is defined as the quotient of usable thermal energy versus received solar energy. Besides the thermal loss, there always is the optical loss as well. The conversion factor or optical efficiency h0 indicates the percentage of the solar rays penetrating the transparent cover of the collector (transmission) and the percentage being absorbed. Basically, it is the product of the rate of transmission of the cover and the absorption rate of the absorber.
If used correctly solar day and night lighting can provide free, high-quality lighting, and do it with less heat generation inside the house than conventional electric lighting.
The efficiency of the solar collectors is measured by the amount of sunlight hitting them, which in turn gets converted into electricity. Solar collectors with the small surface area are highly efficient.
However, there is a barrage of cheap solar collectors being imported and sold, that do not comply with the flag statute. This is bad for a number of reasons. Imported stuff is cheaply made and more importantly, the designs, materials, colors, and methods do not compare well with the better quality, longer-lasting, and correctly designed solar collectors made by American manufacturers. The Flag Company Inc specialized in flags and flagpole lightings offered a special edition of solar-powered collectors to provide innovative solutions for individual projects.