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02-05-2002, 07:23 PM #1I suspect that the 6.5 meters of 1/4" piping submerged in liquid just gives too much pressure drop...... I also suspect that liquid refrigerant is blown through the evaporator before it has the chance to evaporate.
What must be the minimal speed of the (gaseous) refrigerant in the suction line to ensure sufficient oil return?
For a total load of 200W, how large an evaporation surface (copper tubing) do I need? I understand that this depends on the allowable dT between liquid and boiling R134a, but are there guidelines? The lower the dT, the better.Prof Sporlan
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