LG DLHX4072 series, Owner'S Manual

Page: 12 / 116

12
INTRODUCING YOUR DRYER
WHAT IS A HYBRID DRYER?
What is hybrid dryer technology?
LG hybrid dryers use a combination of conventional
heating elements and a heat pump system to dry your
clothes. The heat pump recovers heat from the hot,
moist air that is normally exhausted to the outside and
lost.
Using a heat pump to preheat the air coming into the
dryer recovers this heat and saves electricity, because
it takes less electricity to move the heat than to create
it with a conventional heater. This LG hybrid dryer has
been designed to save you money.
How does the LG hybrid dryer use
less energy than a conventional
dryer?
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from scratch, they use less energy to produce heat than
regular heaters, in most cases.
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evaporate the moisture in the clothes is vented outside
and lost. The hybrid dryer technology is able to recover
some of this wasted energy and use it to evaporate
more moisture, saving energy.
How does it work?
Heat naturally moves from warmer areas toward cooler
areas. Heat pumps control this movement by trapping
hot air. Rather than using a lot of energy to create heat,
heat pumps use a little energy to transfer heat from one
place to another using a heat exchanger.
The heat pump in the dryer is similar to those used in
air conditioners or dehumidifiers. The cold part of the
system is used to condense water and cool the exhaust
air, while the hot part of the system is used to heat the
air coming into the drum to dry the clothes.
How much energy can it save?
The amount of energy saved will depend on cycle
selection, load size, options, vent condition, and many
other factors.
The cycles and options that save the most energy will
take longer to dry, but the energy saved in heating more
than offsets the energy used to tumble the clothes,
which is relatively small.
2. Vapor
Vapor is channelled into an electric
compressor, increasing the pressure
and temperature of the vapor.
Condensed refrigerant
High pressure side
Hot gas
Compressor
Expansion
valve
Cool gas
Cold refrigerant
Low pressure side
Heated air into
dryer drum
Heat ex
changer
E
vapor
at
or
Exhaust air
Room air
4. Condensed vapor
Condensed vapor returns to liquid,
passes through the expansion valve,
reducing pressure and temperature.
The cycle repeats.
1. Exhaust
Hot, moist air from the
dryer drum flows over the
evaporator. The refrigerant
boils and evaporates
cooling the air and
condensing the moisture.
3. Room Air
Cool room air flows over
the hot condenser as
it enters the dryer. The
refrigerant condenses and
cools, preheating the air
entering the dryer.