6.5 Flashcards
is a power-generating device
that produces direct current electricity when it is
exposed to light
photovoltaic (PV) cell
Solar radiation is composed of
________ (particles) that
contain energy
photons
A permanent ____________ is built into the cell forces
electron movement in a particular direction:
electric field
Electron flow is _________, which can
be used to drive electrical appliances and equipment.
electricity
s are a
special type of PV cell that is manufactured with
the dual purpose of generating electricity and
serving as a construction material.
Building-integrated PV (BIPV) materials
The ________ efficiency of a PV cell is the proportion
of solar radiation that the cell converts to electrical
energy.
conversion
Commercially available PV cells measure between___ to
___ in (12 to 100 mm) square and produces a maximum of
about 1 to 2 W of power in direct sunlight
1⁄2 to
4 in
_____ are grouped together in a PV module that
creates a power source capable of lighting a small
electric lamp.
Cells
To generate power required in a building, PV
modules must be grouped together in a _____________
that when combined with other components make
up a PV system.
PV array
are also adequate and
may even be advantageous depending on the power
requirements and time of loads on the building power
system
Southeast- or southwest-facing arrays
The most effective tilt angle for fixed PV arrays depends on
________
latitude
_____ surfaces are ideally suited for PV integration in a building
because there is usually little shadowing at _____ heights and a
____ usually provides a large surface for integration
Roof
produce power independently of the utility grid.
- Stand-alone, off-grid, or autonomous PV systems
need no electrical storage because they
operate only during daylight hours, but most systems rely on
battery storage
Direct-coupled systems
combine
solar power with additional power sources
hybrid systems,
