On 15 Jun, 20:17, Aidan wrote:
On 15 Jun, 19:46, Harry Bloomfield
wrote:

Is it possible for a aircon unit to remove moisture from the air while
pumping the heat back into the room?

Not usually. To draw moisture out of the room, the need to blow the
room air across the chilled fins. Many a/c units have heat, cool and
dehumidfy settings. In cool and dehumidify they collect water in a drip
tray along the bottom, which then has to drain out by gravity or pumped
up and out using a small condensate pump.

Yeas, but..............
An air source heat pump would cool the outside air at the evaporator
and transfer the heat to the inside condensor coil.

A refrigerant dehumidifier would cool the air, causing much of the
moisture to condense, and then reheat the air with the condensor. The
only slight difference is that it will add the latent heat from the
moisture and the power consumption of the compressor motor to the room
air, so it has a very small heating effect.

You'd probably be better off with ventilator with a plate heat
exchanger in it, but if you can't get the air in and out, you're
stuffed.

http://groups.google.co.uk/group/uk....8071cb962e390e


NT