hi
i saw split unit ac
but the connecting pipes between indoor and outdoor unit are strange
the technicians add elbows to the pipes to decorating the exterior of the building
the image will explain more

Snap_2013.03.28_14h31m08s_002.jpg
Snap_2013.03.28_14h31m56s_003.jpg

as i know the elbow will decrease the pressure of the refrigerant then increase load on the compressor
then decrease the refrigeration effect
im right or not ????????