6.3 Flashcards
*Derived from the word “geo” (earth) and
“thermal” (heat).
*It comes from the process of ___________ elements within the earth’s crust.
*Is not truly a _________.
Geothermal Energy, decay of
radioactive, renewable resource
One method used to extract thermal energy
from the earth is called _________.
hydrothermal
__________ manifests in the form of
hot springs, geysers, or through dry steam.
Hydrothermal energy
Provides direct heat needed for commercial,
industrial and residential uses.
Geothermal Energy
______________ is also known as
ground source heat pump (GSHP), earth-coupled
heat pump, or geoexchange system.
Geothermal Heat Pump (GHP)
an electrically powered heat pump system that
consists of ______ buried in the shallow ground
near the building, a heat pump, and _______ in
the building.
Geothermal Heat Pump Systems, pipes, ductwork
A system of fluid-filled plastic pipes buried in the
ground, or submersed in a body of water, near the building.
Ground loop
A device that removes heat from the fluid in the pipes, __________ it, and transfers it to the building as heat. For _______, this process is reversed: heat is transferred from the building; it is carried in the fluid to the pipes, where it is transferred
into the earth.
Heat pump, concentrates, cooling
_________ is a type of heating and/or cooling device that draws
heat into a building from outside of the building during the
heating season
heat pump
if designed with cooling capability, the heat
pump expels heat from the building to the outside during the
cooling season. T or F
T
Conventional ductwork attached to the heat
pump and used to distribute heated or cooled air throughout the
building.
Air delivery system
it can be used a heat source or heat sink that can provide heating
and cooling for both residential and commercial buildings.
Geothermal Heat Pump Systems
Geothermal heat pump systems are classified by the type of
__________ that they use.
ground loop
__________ geothermal heat pump systems circulate a solution of
water and antifreeze through a series of _________ of piping.
Closed-loop, sealed loops
The ______ serve as a heat exchange medium between the fluid
and the earth.
loops
Can be installed in the ground vertically, horizontally, or in a
body of water.
CLOSED-LOOP SYSTEM
- _______________ system uses a number of
horizontal trenches.
horizontal ground closed-loop
__________ designs range from a single pipe, to multiple pipes arranged ________ in a narrow trench, to multiple pipes in a wider trench.
Piping system, vertically
________________ is used where there
is little _________, when surface rocks make ________ impractical, or when you want to disrupt the landscape
as little as possible.
Vertical ground closed loop system, yard space, digging
Vertical loops are generally more expensive to install, and require more piping than horizontal loops. T or F
F ( but require less)
______________ may be the most _________
when a building is near a body of water such as a shallow pond or lake.
Pond closed-loop system, economical
Because closed-loop system is a closed system, it results in no adverse
impacts on the aquatic system. T or F
T
it circulates water drawn from a ground.
a surface water source.
operate on the same principle as closed loop system.
OPEN- LOOP SYSTEM
also called ________ wells or energy wells.
the most establish technology.
typically, _______ in diameter and as deep as _______.
it serves to provide ________.
STANDING COLUMN WELL SYSTEM, turbulent, 6 inches, 450 m, potable water
