Originally Posted by
stvsxm
well... yes and no. as I said, my backround is mechanical engineering and flow thru a pipe size has everything to do with how the medium is delivered.... in your example if the fire brigade is using a positive displacement pump and 2 " dia hose then the pressure inside that hose will be x at a given pump speed and have a flow rate of y gal per min. if I hook my garden hose up to their pump the pressure in the hose will probably be 50 x , and the velocity of the water will be correspondingly increased at the the same pump rpm because the pump is going to move a fixed volume per revolution... the flow rate will be the same but the velocity out of the end of the pipe will be astronomical as will the pressure inside the hose... now... these compressors pumps in an airco are vane type pumps I think but im not sure if they are positive displacement or not. I know they have some limitations because the manufacturers are picky about the max pipe lengths per installation so that's where the variables start to stack up and I run out of data. intuitively I don't think its a garden hose situation and intuitively I think I should be ok... but then again, I don't know what I'm doing... in a hydraulic situation like the garden hose , if asked the same question I could answer " yes... it will work just fine as long as the hose can take the pressure and the added velocity isn't an issue and you have the extra power available to push the fluid thru the hose because the pump will have to work a bit harder to maintain the same revs " but this is refrigeration and I don't really know what goes on underneath that housing. per the other replies, the systems will be same manufacturer and same specification so I am assuming the oils etc will all be the same.
I REALLY don't want to tear up the wall.