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21 Cards in this Set
- Front
- Back
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active solar energy collection
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systems use circulating pumps and fans to collect and distribute heat
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azimuth path
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The azimuth path is the sun's movement from east to west
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closed loop solar collection
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Systems in which a collection medium is used to collect the heat and transfer it to water or air for end use.
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compound parabolc collector
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is a combination of a flat-plate collector and a parabolic collector.
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condensing unit
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In solar cooling operations, the unit where refrigerant is condensed from a gas back into a liquid and gives up its heat.
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conduction
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The transfer of heat from molecule to molecule, straight through a material or group of materials.
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convective loop
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The loop created when convection carries heated air from an isolated gain solar collector up to a structure, and cold air return vents allow cooler air to return to the collector" It does not require any circulating pumps or fans.
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direct gain approach
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The most common type of passive solar collection. In this type of system, there are no significant architectural provisions made to coilect solar energy, other than facing windows in the proper direction.
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evaporator
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A freezing unit used in solar cooling operations.
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flat-plate collector
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The most common type of active solar collector. It is typically stationary, mounted on a rooftop, facing south in the northern hemisphere
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indirect gain approach
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A type of passive solar collection that makes use of a storage medium to store heat for later use.
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isolated gain approach
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the solar collector is isolated from the structure to be heated.
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linear-concentrating parobolic collector
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Parabolic collectors must track the sun from east to west in what is known as the azimuth path.
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open loop solar collection
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the heated water or air is
directly distributed for use. |
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parabolic dish collector
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An active solar collector that is point focusing
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passive solar energy collection
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Systems that do not make use of any externally powered, moving parts, such as circulation pumps, to move heated water or air.
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phase change
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occurs when a substance changes its state (liquid, solid, or gas) to another state.
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photoelectric effect
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The emission of free electrons then photons strike certain metals.
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photovoltaic cell
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have the ablity to convert sunlightdirectly into electricity ithout any moving parts
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Trombe wall
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A common application of the indirect gain approach
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Zenith path
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The height of the sun in sky
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