Q. What is refrigeration pipework?
Refrigeration Piping. An often overlooked, but very important part of any refrigeration system, is the piping to connect all the components of the system. Improper piping can be the cause of overall poor performance and compressor failure. The most critical line is the suction line.
Q. What type of pipe is used for refrigeration?
copper tubing
Hardened copper tubing is used for water lines, commercial refrigeration and HVAC. This type of tubing is joined using grooved, compression, crimped, or sweat connections.
Q. What are the three major refrigerant lines?
These individual components are connected by refrigerant piping. The suction line connects the evaporator to the compressor, the discharge line connects the compressor to the condenser, and the liquid line connects the condenser to the expansion device.
Q. What are the two types of refrigerant lines?
Refrigerant Lines The larger line typically carries a cool gas and is insulated. This is commonly referred to as the suction line, but it is also called the return line or vapor line. The smaller uninsulated line typically carries a warm liquid. It is most often called the liquid line.
Q. How is refrigerant pipe measured?
Refrigeration tubing is measured by it’s outside diameter or O.D.: ¼, ½, 5/8, ¾, 7/8, 1-1/8, 1-3/8, 1-5/8, etc. Plumbing tubing is measured by it’s inside diameter or I.D. : 1/8, ¼, ½, ¾, 1, 1-1/4, 1-1/2, 1-3/4,etc.
Q. Is refrigerant pipe ID or OD?
Refrigeration tubing is measured by it’s outside diameter or O.D.: ¼, ½, 5/8, ¾, 7/8, 1-1/8, 1-3/8, 1-5/8, etc.
Q. What type of tubing Cannot be used in air conditioning systems?
You must check to make sure that the refrigerant that is going to be used does not react with the copper. Ammonia refrigerant will react with copper hence it should not be used. Instead, the stainless steel tubing type will have to be used.
Q. Which line is high pressure on AC?
The pressurized refrigerant is carried from the high side of the AC system to the low side by the High Side AC Hose. The high pressure components of the AC system include the AC Compressor, AC Condenser and the AC Receiver Dryer.
Q. Can you reuse refrigerant lines?
As long as you properly remove all refrigerant and oil, it’s ok to reuse a line set that once held R-22 refrigerant.
Q. How far can you run refrigerant lines?
HVAC systems are charged with refrigerant capable of handling 50 foot of refrigeration line. A simple adjustment of charge may be necessary when longer.
Q. How to design a small refrigerant piping system?
The philosophy in designing a refrigerant piping system can be summed up as follows: Liquid lines should be sized as small as possible without exceeding the recommended maximum pressure drop of 50 PSI for R-410A. Liquid line pressure drop calculations must include friction loss, liquid lifts and refrigerant accessories (solenoid valves, etc.).
Q. Who is responsible for refrigerant piping in Split systems?
Since refrigerant piping of split systems can affect the performance, reliability, cost, code compliance, and war – ranty of equipment, final piping design and configuration should only be done by qualified individuals trained in the discipline and who bear responsibility for the in- stalled design.
Q. Which is an example of field refrigeration piping?
AG 31-011 • REFRIGERANT PIPING DESIGN 4 www.DaikinApplied.com Refrigerant Piping Several HVAC systems require field refrigeration piping to be designed and installed on-site. Examples include: • Condensing units • Direct expansion (DX) coil in air handlers • Remote evaporators with air-cooled chillers (Figure 1)
Q. How big is a refrigerant flow control pipe?
The size of this pipe can be 3/8” up to 25 tons capacity, and 1/2” up to 60 tons. When designing a system, the engineer needs to maintain a solid column of liquid refrigerant to the flow control device,
