the solar energy
71Solar Cooling — The use of solar thermal energy or solar electricity to power a cooling appliance. There are five basic types of solar cooling technologies: absorption cooling, which can use solar thermal energy to vaporize the refrigerant; desiccant cooling,… …
72Unglazed solar collector — A solar thermal collector that has an absorber that does not have a glazed covering. Solar swimming pool heater systems usually use unglazed collectors because they circulate relatively large volumes of water through the collector and capture… …
73Energy — The capability of doing work; different forms of energy can be converted to other forms, but the total amount of energy remains the same. This is broadly defined as the capability of doing work. In the electric power industry, energy is more… …
74Solar constant — The average amount of solar radiation that reaches the earth s upper atmosphere on a surface perpendicular to the sun s rays; equal to 1353 Watts per square meter or 492 Btu per square foot. U.S. Dept. of Energy, Energy Information… …
75Unglazed Solar Collector — A solar thermal collector that has an absorber that does not have a glazed covering. Solar swimming pool heater systems usually use unglazed collectors because they circulate relatively large volumes of water through the collector and capture… …
76Solar shade — Use of solar shades is a proposed approach to the mitigation of global warming through planetary engineering. By intentionally changing the Earth s albedo, or reflectivity, scientists propose that we could reflect more heat back out into space,… …
77energy payback time — The time required for any energy producing system or device to produce as much energy as was required in its manufacture. For solar electric panels, this is about 16 20 months. Solar Electric Glossary …
78Solar declination — The apparent angle of the sun north or south of the earth s equatorial plane. The earth s rotation on its axis causes a daily change in the declination. U.S. Dept. of Energy, Energy Information Administration s Energy Glossary …
79Solar Time — The period marked by successive crossing of the earth s meridian by the sun; the hour angle of the sun at a point of observance (apparent time) is corrected to true (solar) time by taking into account the variation in the earth s orbit and rate …
80Energy Density — The ratio of available energy per pound; usually used to compare storage batteries. *** The ratio of energy available from a battery to its volume (Wh/1) or mass (Wh/kg). watts to weight ratio. Solar Electric Glossary …
