What Is HFO-1234yf?

Afternoon Period
2/5/2013

HFO-1234yf HFO-1234yf has been chosen to be the next up and coming automobile refrigerant. The real name of this new design is called tetrafluopropene. The new cylinder that this product will be coming in will be white in color with a red band around the cylinder. This new design is offering the best balance and best performance. It starts with having an excellent environmental property with having global warming potential at level four and has zero ozone depletion potential. HFO-1234yf can be comparable to HFC-134a for having the same properties. HFO-1234yf has the acceptable stability and the compatibility properties with HFC-134a. It is also mildly flammable but not as flammable as previous refrigerant.
This new product also has a low toxicity level. Comparing the two refrigerants of HFC-134a and HFO-1234yf the 134a is a hydro fluorocarbon while the 1234yf is a hydrofluoro-olefin refrigerant. HFC refrigerants are have one single bong while the HFO refrigerant is bonded with at least one double bond between the carbon atoms. HFO-1234yf has the same physical properties as HFC-134a therefore 1234yf may be used in current 134a systems without making many modifications to the system. According to DuPont 1234yf has the potential to be retrofitted to the existing HFC-134a systems. The only problem with this that it can cause is that HFO-1234yf is said to be tens times more expensive then the existing HFC-134a which then brings the idea of shops recharging the system with “HFO-1234yf” but actually refilling it with the cheaper HFC-134a since they will be so similar. Studies have proved that HFO-1234yf has improved performance beating the HFC-134a. HFO-1234yf will have a lower total contribution to climate change. It has a more environmentally sustainable refrigerant for automobiles that has a 99.7% better GWP score than the currently used refrigerants, test have also
This will now recirculate the cabin air without letting outside air thus resulting in colder temperature. Then turn blower switch to full blast. Now start engine, put pressure on gas petal until reaching two thousand rpms. Now make sure to close all windows and doors. The next step would be to place an auxiliary fan in front of the car facing the condenser. Allow the system to stabilize which will take approximately five to ten minutes. Now begin to place a thermometer in the register closet to the evaporator and check the temperature. When you read the temperature it should be around thirty-five to forty degrees Fahrenheit with an ambient air temperature of eighty degrees Fahrenheit. At this time if you have a set of gauges, this would be a good time to put them on to read your pressures and see when the compressor is cycling or cycling at all in some cases. If outlet temperature is high, check compressor cycling time. After this process now first check the cycling clutch switch operation. Second and final step for this process, is if clutch is energized continuously, discharge the system and check for missing orifice tube, plugged inlet screen, or any other restrictions in the suction