Originally Posted by
marc5180
He says this will increase the flow capacity of the tube but........ I've been reading up and i think that you ( Nike) are right.
I've taken this out of "Principles of refrigeration" by Roy Dossat page 353.
however when the tub does not have enough resistance (tube to small and/or bore to large), the flow capacity of the tube will be greater than the pumping capacity of the compressor at the design conditions, in which case over feeding of the evaporator will result with the danger of possible liquid floodback to the compressor. also, there will be no liquid seal in the condensor at the entrance to the tube and therefore, uncondensed gas will be allowed to enter the tu be along with the liquid obviously the introduction of latent heat into the evaporator in the form of uncondensed gas will have the effect of reducing system capacity.