The process it goes through is evaporation. Freon changes state from liquid to gas, and then back to liquid again in order to create the necessary temperatures it's trying to achieve. With a system that handles both
Freon™ MP39 enters the condenser (point E) as a saturated vapor at 117 °F and exits the condenser (point F) as a saturated Page 4 Freon™ Refrigerants 4 liquid at 109 °F for a “temperature glide” of 8 °F. By comparison, CFC-12 begins condensing at 113 °F and remains at that temperature until condensation is complete.
A common misconception is that Freon evaporates. It is not the Freon that evaporates but the moisture in the air that will do so. The beads of water go back and forth between the liquid and gaseous forms when there is a temperature difference outside and inside.
When heat is added or taken away from a refrigerant while it remains at a constant pressure, the refrigerant is likely to condense or vaporize. This is because the phase change of a refrigerant depends on the amount of heat added or removed.
The boiling temperature of a refrigerant at a certain pressure is called the saturation temperature. At the saturation temperature, any additional energy absorbed by the refrigerant will transform liquid to gas.
Theoretically, Freon can last forever. It is not burned up like fuel. When an air conditioning system is in top shape, the refrigerant will be continually recycled within a closed system, to cool your home. However, as the AC tubing ages and wears out, it tends to develop leaks in the system.
Upon entering the evaporator, the liquid refrigerant's temperature is between 40° and 50°F; and without changing its temperature; it absorbs heat as it changes state from a liquid to a vapor. The heat comes from the warm, moist room air blown across the evaporator coil.
In the evaporator, the refrigerant is in a low-pressure state due to the action of the expansion valve. As the refrigerant absorbs heat from the surroundings, it vaporizes, changing from liquid to gas and providing the cooling effect.
Refrigerants and other fluorinated chemicals (CFC, HCFC, HFC, PFC) that often have very high global warming potential (GWP) are fully cracked and safely eliminated using high temperature steam plasma.
heat is absorbed by a refrigerant in a refrigerator when its changes from a liquid to a vapor.
Theoretically, no. If there IS NO LEAK, then it can not escape. But chances are, there probably IS a leak, or several of them. Automotive, mobile AC systems, anything with hoses, belt driven compressors, systems subject to motion, will be more subject to leak and can be counted on to eventually develop leaks.
Freon does not dissipate or gets taken in, so there is no loss unless there is a leak in one of the pipes or fittings. HVAC professionals suggest that freon leaks be repaired without delay as they can worsen in time and cause the entire system to fail.
It has the formula CF3CH2F and a boiling point of −26.3 °C (−15.34 °F) at atmospheric pressure. R-134a cylinders are colored light blue.
Releasing Freon into the air can cause a lot of harm to the environment, so you should not attempt to do it. They have the tools – professionals come with the right tools and equipment needed for Freon removal and any other maintenance needs.
Refrigerant requires less energy to evaporate and condense than water does. As a result, your air conditioner can cool your home's air at a faster rate.
Freon never gets “used up” and it never “wears out.” In a perfect world, the refrigerant that an AC unit receives upon its initial installation would be the same refrigerant still in the lines upon its decommissioning.
The best way — the only way, really — for you to dispose of refrigerant chemicals properly is to call a certified HVAC technician. Section 608 of the Clean Air Act lists specific procedures that must be followed for the disposal of freon, and certified technicians are well-versed in the process.
Liquid recovery method
As the name implies, with this method you recover the refrigerant in liquid form, so you'll connect to the “high side” of the system (where refrigerant is under high pressure). Otherwise, the process is similar to the vapor recovery method.
Types of Releases
EPA regulations (40 CFR Part 82, Subpart F ) under Section 608 of the Clean Air Act prohibit individuals from intentionally venting ozone-depleting substances (ODS) or their substitutes while maintaining, servicing, repairing, or disposing of air-conditioning or refrigeration equipment.
Why Did The U.S Ban R22 Refrigerant? The U.S. Environmental Protection Agency (EPA) has banned R22 freon in the country. Why? R22 contributes to the depletion of the ozone layer – which absorbs the ultraviolet radiation from the sun and protects us from its harmful effects – and the ecosystem in general.
As mentioned earlier, Freon costs about $125 – $150 per pound. Most homeowners will pay in the range of $200 to $400 for a refill, depending on the type and size of their HVAC unit.
Refrigerant can shift easily between liquid and gas states, which makes it ideal for ACs since it doesn't take significant amounts of energy to cause the phase shift. Refrigerant starts inside the compressor, where the reduction of volume turns it into a high pressure gas about 150°F.
Freon (which is really just a particular brand of refrigerant) lasts forever. It's not like gas in car; it does not get “used up.” You see, your air conditioner's refrigerant system is a “closed/sealed system,” meaning that it does not allow refrigerant to escape in any way.
A3 refrigerants are subject to thermal decomposition at temperatures of the order of 450°C, and A2L and A2 refrigerants at temperatures in excess of 250°C.
Refrigerant doesn't dissipate over time. It isn't used up the way fuel is. That is why if you start to have trouble with low refrigerant levels, you need to reach out to a professional to address the problem.