So our company was thrown into a refrigeration project recently. There are no drawings indicating the recommended piping. The manufacturer has pipe sizing recommendations at the compressor rack itself. I was wondering if you guys just had any basic recommendations and rules that I should follow when designing the suction, and liquid line piping. We have 14 cases on this rack. 11 medium temperature cases on the medium temperature portion of the rack and 3 low temperature cases on the low temperature side of the rack. The drawing shows 7/8" liquid line going out to all 14 cases. Depending on the length of piping I am wondering if I should upsize it to 1 1/8"? I also have 1 5/8" suction coming back from the low temperature cases and 2 1/8" suction coming back from the medium temperature cases.
I was wondering if there are any piping design items that I should definitely incorporate? I know I need a oil trap at every evaporator. I assume that most of my evaporators are going to have a 7/8" suction line. So is it typical to just tee right off of the 2 1/8" line down to 7/8" to each evaporator? Is there a certain way I need to run my suction and liquid lines around the store? Do I just dead end the suction line into the last evaporator or just cap the end of the 2 1/8" line and come off the bottom somewhere for my last tap?
Any basic piping design ideas that I should consider would be appreciated. We don't get into these kind of systems much. I just want to make sure we size, design, trap, and pitch the piping correctly for proper system operation.
Thanks!
I was wondering if there are any piping design items that I should definitely incorporate? I know I need a oil trap at every evaporator. I assume that most of my evaporators are going to have a 7/8" suction line. So is it typical to just tee right off of the 2 1/8" line down to 7/8" to each evaporator? Is there a certain way I need to run my suction and liquid lines around the store? Do I just dead end the suction line into the last evaporator or just cap the end of the 2 1/8" line and come off the bottom somewhere for my last tap?
Any basic piping design ideas that I should consider would be appreciated. We don't get into these kind of systems much. I just want to make sure we size, design, trap, and pitch the piping correctly for proper system operation.
Thanks!
