richardc1983
Well-known member
A condenser dryer works by passing the hot moist air of the condenser (similar to the cold coil known as the evaporator in an air con unit). This is the cartridge cassette you pull out to clean every so often.
This cartridge has wide flat tubes that overlep each other and run from top to bottom and left to right but they dont join up. Hot moist air is pulled through one set of tubes running usually the longest way of the condenser cartridge and fan sucks room temperature air thruogh the other set of tubes. This cools the cartridge down to dew point (similar to a glass of ice cold water on a hot day) and the moisture in the hot air sticks to the cooler surface. This is then collected in the water tank or drained away. The cooled dryer air then recirculated back through the heating elements and back into the dryer. As the room temperature air is the "refrigerant" in this case it is not that good as a cooling medium which is why condenser dryers have bad press at being slow.
IN a heat pump dryer the condenser cartridge is replaced by an evaporator coil identical to that of an air con or dehumidifier system. A cooling circuit setup the same as in an air con system is plumbed into the dryer with refrigerant running through the evaporator this brings the evaporator coil down to a very cold temperature and is much more efficient at removing the moisture from the damp hot air. After the evaporator coil is the condenser coil (hot side or outdoor coil in an air con unit). This is setup in the same way as a dehumidifier with a compressor.. the cold dry air is then reheated back upto temperature and makes it way back into the dryer to repeat the cycle.
I found this also:
http://ths.gardenweb.com/faq/lists/laundry/2004120958010854.html
ths.gardenweb.com
This cartridge has wide flat tubes that overlep each other and run from top to bottom and left to right but they dont join up. Hot moist air is pulled through one set of tubes running usually the longest way of the condenser cartridge and fan sucks room temperature air thruogh the other set of tubes. This cools the cartridge down to dew point (similar to a glass of ice cold water on a hot day) and the moisture in the hot air sticks to the cooler surface. This is then collected in the water tank or drained away. The cooled dryer air then recirculated back through the heating elements and back into the dryer. As the room temperature air is the "refrigerant" in this case it is not that good as a cooling medium which is why condenser dryers have bad press at being slow.
IN a heat pump dryer the condenser cartridge is replaced by an evaporator coil identical to that of an air con or dehumidifier system. A cooling circuit setup the same as in an air con system is plumbed into the dryer with refrigerant running through the evaporator this brings the evaporator coil down to a very cold temperature and is much more efficient at removing the moisture from the damp hot air. After the evaporator coil is the condenser coil (hot side or outdoor coil in an air con unit). This is setup in the same way as a dehumidifier with a compressor.. the cold dry air is then reheated back upto temperature and makes it way back into the dryer to repeat the cycle.
I found this also:
http://ths.gardenweb.com/faq/lists/laundry/2004120958010854.html

What is a 'condenser' dryer ??
A condenser clothes dryer is a machine that looks just like a conventional tumble clothes dryer, but which does not require an external vent. For the user/owner, operation of both types of dryers is essentially the same - the difference is in the internal design. In a vented clothes dryer...