refrigerator compressor repair lexingtoin ky

Oil in the ammonia chambers can cause the system to work harder than necessary to move liquid from the compression chamber. Excess oil: Impurities in ammonia refrigeration systems may also be caused by excess oil in the system.As water freezes, it expands, which can cause these areas to burst, resulting in a leak. If water gets into the refrigeration system, it will freeze either on the low-pressure side of the system or in the pipes and valves leading to and from that side. Water can also form as part of the normal breakdown of ammonia, though this is a slower process. Water can enter the system during charging or repair processes where the ammonia is exposed to normal air conditions. Since ammonia is highly water-soluble and easily absorbs water in its surroundings, water is the most common contaminant. Excess water: Ammonia refrigeration systems rely on having pure anhydrous ammonia, as impurities can introduce serious problems.The causes of these leaks often come down to poor maintenance, but are directly caused by one of the following system problems: Ammonia leaks cause ammonia to leak into the surrounding environment, which can cause a variety of problems for health and human safety. There are many ways in which an ammonia refrigeration system may fail, but one of the most dangerous forms of unit failure is an ammonia leak. If the compressor fails, it can cause a range of problems for users. However, the entire process centers around the ammonia compressor working correctly. This process repeats cyclically to maintain cool temperatures inside the refrigeration system. The cold ammonia gas is sucked back into the compressor for the cycle to start over.The cooled air is pushed out of the system into the refrigerated space.The vaporization of ammonia causes the temperature to drop to anhydrous ammonia’s boiling point at -28☏, cooling the air around it.The pressure is released on the other side of the expansion valve, allowing the liquid ammonia to boil and vaporize.The pressurized ammonia condenses into a liquid as the heat dissipates, then flows through an expansion valve to a lower-pressure area.As the ammonia is pressurized, it travels up into the coils at the back of the refrigeration unit, where the heat dissipates.The ammonia compressor pressurizes the ammonia gas, which heats up as the pressure increases.These systems take advantage of the unique chemical properties of anhydrous ammonia, which boils at a temperature of -28☏. How an Ammonia Refrigeration System WorksĪnhydrous ammonia is the basis of an ammonia-based industrial refrigeration system.

Refrigerant-grade ammonia is at least 99.95% pure ammonia. “Anhydrous” is a Greek word meaning “without water,” so anhydrous ammonia consists of at least 99% ammonia. In industrial settings, however, anhydrous ammonia is used. Household ammonia is usually a water solution containing only 5 to 10% ammonia. Readily absorbs moisture from the surrounding environment.It possesses the following chemical properties: It is also one of the most widely produced industrial chemicals in the United States, used in industry and commerce. This colorless yet extremely pungent chemical is commonly found in nature and is an integral part of the nitrogen cycle and biological processes like amino acid synthesis. Ammonia BasicsĪmmonia, written with the chemical notation of NH 3, consists of one atom of nitrogen and three atoms of hydrogen at the molecular level. In this article, we’ll discuss the basics of how ammonia refrigeration works, the associated risks of poor maintenance and some essential ammonia compressor maintenance tips. While ammonia compressors and other ammonia-based refrigeration technologies are highly efficient and effective, the risks of ammonia are still present and must be managed effectively through regular maintenance. Newer technology has made ammonia safe to use as a refrigerant, so it has gained common use in refrigeration equipment like compressors. It also uses less energy than other refrigerant options. While manufacturers previously avoided ammonia due to its associated health hazards and smells, ammonia has a zero rating for ozone depletion and global warming potential. Ammonia is an increasingly popular alternative refrigerant to environmentally harmful hydrofluorocarbons.

Refrigerator compressor repair lexingtoin ky