CH 44
Which of the following is an example of a passive solar energy system?
A greenhouse addition on a home.
A common application for a small solar electric system is a(n) ____.
All of the above.
Lens-type concentrators ____.
All of the above.
A homeowner participating in a net metering program must install a large array of storage batteries.
FALSE
An active solar heating system depends on solar radiation striking directly on the area to be heated.
FALSE
Because water has a low energy storage density, it is not typically used in sensible TES systems.
FALSE
Glass and metal expand at the same rate with temperature change.
FALSE
If electric resistance heating is used to supplement a solar heating system, a separate furnace is usually installed.
FALSE
A solar DHW system may use a conventional water heater in addition to the solar water heater.
TRUE
A solar cooling system used with an absorption system usually employs concentrating collectors.
TRUE
A solar domestic hot water system heats water for household tasks.
TRUE
A solarium is a practical application of passive air-based solar heating.
TRUE
An advantage of building-integrated solar modules is that they blend in with the appearance of traditional building materials.
TRUE
Regarding sensible TES systems, the amount of energy stored depends partly on the initial and final temperature of the storage medium.
TRUE
The maximum surface temperature of a black object exposed to sunlight can be increased by trapping the radiation emitted by its surface.
TRUE
When electric resistance heating is used to supplement an air-based solar heating system, ____.
a direct electric resistance radiator may be installed in the air duct
The tubes in an evacuated tube collector lose almost no heat, because heat cannot travel easily through ____.
a vacuum
When electric resistance heating is used to supplement a liquid-based heating system, ____.
an electric heating element can be installed in an auxiliary tank
Liquid-based systems in cold climates often use a mixture of water and ____ instead of pure water to reduce the freezing point of the liquid.
glycol
In a closed liquid-based solar heating system, ____.
gravity may be used to drain liquid from the collectors when the pump is off Correct! All of the above. an insulated storage tank holds the liquid when the system is not operating the liquid may become a source of heat for a heat pu
A solar heating system that may use a thick concrete wall to store thermal energy for heating at a later time is ____.
passive air-based
Solar heating systems that warm the air to heat rooms or buildings directly are ____.
passive air-based
Ideally, a collector surface would be ____ to the rays of the sun.
perpendicular
Of the following, the surface that would be most effective for the absorber in a solar collector is a ____ surface.
rough black
The device most commonly used to convert solar energy to electricity is a(n) ____.
solar cell
An example of the thermosiphon effect is ____
water rising as it heats and falling as it cools in a passive heating system
Infrared radiation is absorbed by ____.
water vapor and carbon dioxide
