What refrigerants are halogenated?

PFC refrigerants (hydrofluorocarbons, F-gases)

PFC (perfluorocarbon) refrigerants are fully halogenated hydrocarbons. They only contain fluorine (F) and carbon (C). The ODP of PFC refrigerants is 0, meaning that they pose no threat to the ozone layer.

Is R-22 halogenated?

Ammonia is the cheapest whereas the halogenated refrigerants like R12 and R22 are more expensive. Properties of some refrigerants are discussed in the later sections.

What are the four types of refrigerant?

Here are the different types of refrigeration systems:
  • Evaporative Cooling. Evaporative cooling units are also referred to as swamp coolers. …
  • Mechanical-Compression Refrigeration Systems. Mechanical compression is used in commercial and industrial refrigeration, as well as air conditioning. …
  • Absorption. …
  • Thermoelectric.

What are the main three refrigerant groups?

Types of Refrigerants
  • Chlorofluorocarbons (CFCs), including R12. This is known to contribute to the greenhouse gas effect. …
  • Hydrochlorofluorocarbons (HCFCs), including R22. …
  • Hydrofluorocarbons (HFCs), including R410A and R134.

Is R134a a halogenated refrigerant?

What are examples of halogenated refrigerants? PFC refrigerants (hydrofluorocarbons, F-gases) PFC (perfluorocarbon) refrigerants are fully halogenated hydrocarbons. Common HFC refrigerants are R-32, R- 125, R134a, R-143a, and R-152a.

What type of refrigerant is R410A?

R-410A is a chlorine-free refrigerant that meets the U.S. EPA’s newest, most stringent environmental guidelines. R-410A was developed as an alternative to R-22 (Freon), which will be phased out over the coming years in response to international environmental concerns.

What are the most common types of refrigerants?

The most common type of refrigerants used today across the world are hydrofluorocarbons (HFCs). Previously, chlorofluorocarbons (CFCs) were more widely used, but were phased out following the introduction of the Montreal Protocol in 1987.

What are all of the types of refrigerants?

Types of Refrigerants
  • Water. Water is one of the substances filled with perfect chemical and thermodynamic properties. …
  • HFC R134A. …
  • Hydrocarbons (HCS) …
  • Ammonia (R717) …
  • CO2 R744. …
  • HCFC -22 (R-22) …
  • R-410A Refrigerants. …
  • R-600 Series Refrigerants.

What is a Class 3 refrigerant?

Moreover, Class 3 is for refrigerants that, when tested, exhibit flame propagation at 140°F (60°C) and 14.7 psia (101.3 kPa) and that either have a heat of combustion of 19,000 kJ/kg (8,174 BTU/lb) or greater or a LFL of 0.10 kg/m3 or lower.

What type of refrigerant is R-22?

hydrochlorofluorocarbon
What is R22 refrigerant? R22 (or HCFC-22) is the slightly shorter name for chlorodifluoromethane. This is a colorless gas most commonly used as a refrigerant or propellant. It is a type of hydrochlorofluorocarbon (HCFC) introduced in the 1950s.

Why R-134a is used as refrigerant?

R134a has fairly good dielectric properties as it has high thermal stability, low boiling point, and chemical inertness against the construction materials used; and is non-toxic and non-flammable. . A dielectric substance in its gaseous state can be used to prevent electric discharges.

What is commonly used as refrigerant for most refrigerators?

While R-12 was once the go-to choice for residential/domestic refrigeration systems, Freonâ„¢ R-134a refrigerant is now most commonly used. Its versatility allows it to work in home systems ranging from small under-the-counter refrigerators to family-sized refrigeration/freezer systems with multiple cooling compartments.

What are primary refrigerants?

Primary refrigerants are those fluids, which are used directly as working fluids, for example in vapour compression and vapour absorption refrigeration systems. When used in compression or absorption systems, these fluids provide refrigeration by undergoing a phase change process in the evaporator.

Why are there different types of refrigerant?

Refrigerants are divided into groups according to their chemical composition. Following the discovery that some of these chemical compounds may be harmful to the environment, they are being replaced with more environmentally friendly alternatives (see Figure 5.2).

What is a group A1 refrigerant?

Refrigerants are classified as below: The vast majority of HFC and HFC/HFO blend refrigerants in current use are classified as A1, with low toxicity and zero flammability. Ammonia, which has been in use for many years, is classified as B2L; R-152a is an A2 refrigerant, and all hydrocarbons are classified as A3.