Optimizing refrigerant charge has always been a key part of designing cooling systems and balancing their efficiency, reliability, performance, and cost. But recently, that balance has shifted, and refrigeration engineers are once again looking at refrigerant as a key piece of the puzzle. There are ... read more
Evacuation is often called “vacuum” or “pulling a vacuum,” and it’s one of the most important parts of the HVACR installation and repair process where the refrigerant circuit is involved. Our goal should be to keep the closed refrigeration circuit clean, dry, and tight — just like I was taught since... read more
Refrigerant costs seem unlikely to fall in the near future. Supplies of traditional refrigerants are being reduced, and new alternatives being developed will likely carry the price premium that comes with having limited suppliers and competition. But it is not only the increase in prices that is an ... read more
Why do we need to evacuate an air conditioning system or a refrigeration system? All the refrigeration system are designed to run without moisture and non-condensable gases else it may not work as designed and is likely to fail prematurely. Presence of moisture in the air conditioning system may lea... read more
The working principle of the hanging bottle: the infusion system formed by the principle of atmospheric pressure and hydrostatic pressure, the principle that the internal pressure is higher than the human venous pressure, and the liquid is directly input into the vein. The hydrostatic pressure refer... read more