What Is A Hybrid Dryer - LG DLHX4072 series Owner's Manual

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.
Heated air into
dryer drum
3. Room Air
Cool room air flows over
the hot condenser as
it enters the dryer. The
refrigerant condenses and
Room air
cools, preheating the air
entering the dryer.
How does the LG hybrid dryer use
less energy than a conventional
dryer?
scratch, they use less energy to produce heat than regular
heaters, in most cases.
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.
2. Vapor
Vapor is channelled into an electric
compressor, increasing the pressure
and temperature of the vapor.
Hot gas
Compressor
Expansion
valve
Condensed refrigerant
High pressure side
4. Condensed vapor
Condensed vapor returns to liquid,
passes through the expansion valve,
reducing pressure and temperature.
The cycle repeats.
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.
Cool gas
Cold refrigerant
Low pressure side
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.
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.