Dryer used in fridges?

[Ravilj]

Could some1 help me with the purpose of the dryer (sp) used in fridge phase change cooling systems? was wondering if it is needed in a direct die or all phase change cooling systems?

[Ragnarok]

it gets rid of moisture in the system, which can react with oil to form acid..

also it can act as storage for excess refridgerant, so u dont get liquid return in the suction line..

[Ravilj]

mmm ok i'll take that as a good idea to add it to my system, well i guess there will b 1 there already since i am using an old bar fridge with R134a and 1/8hp compressor...lol! phase change at its best...heh heh heh! good learning curve project!

[Redwolf]

You should always change the drier after opening up the system. They start to take on moisture as soon as their opened.

[Ravilj]

how effective would adding a heat exchanger be... ie: coiling the return pipe from the evaporator around the pipe leaving the condenser (before the capillary tube)?

In the above soon 2 b system i would gather that it wouldn't provide 2 much extra in terms of cooling the refrigerant leaving the condensor... but in a larger system?

[Redwolf]

wraping the cap tube around the suction line or in it should be all you need