Notes And Questions On
Geothermal
By The Scorpucudas
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WSHP (Water Source Heat
Pumps)
Refrigeration summary
1. Compressor compresses
Freon gas inside the
condenser coils.
2. Hot, high pressure Freon
gas is run through the
condenser coil with a fan
blowing outside air on it, loses
heat and gets cooled,
becoming a liquid
3. Freon liquid then goes
through the expansion valve
and returns to it’s gaseous
form.
4. As it flows through the
evaporator coil, a fan blows
warm air onto the coil
warming the Freon and cooling
the air
• Image from
www.nzmaths.co.nz
AAHP (Air to air heat
pump)
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AAHP has a reversing value near the compressor
allowing the air flow go either
How it works
Compressor compresses Freon gas located in coils and
pushes air into reversing valve
The air then will go and to one of two sides. One side
heats while other cools the air. this cycle would
continue but one side effect for people who live in the
north it is the air may freeze making you spend anti
freeze
WSHP (Water Source Heat
Pump)
• Failure of AAHP in Northern states led to
development of new types of pumps like
that ran on water instead.
• 1. Compressor compresses freon gas
• 2. Reversing valve heats or cool
• 3. goes threw expansion valve leading to
water
• 4.As air goes through evaporation coil
water keeps from freezing because of
steady temperature.
• 5. water goes on cycle through ground and
back up to heat or cool house.
FACTS on WSHP
• In Northeast the average water
temperature is and it stays year
round no matter what the above
ground temperature is
• This type is used the most
because the temp of ground
never changes example above
123 f and ground 52 f
• Geothermal
• 5-8 years to pay
off
• Should be put in
before the house
is built.
• Does not need
to be maintained
often
• Solar panel
• Takes 15-20
years to pay off
• Can be built
after house is
built or while
being built.
• Maintaince
often.