Questions and answers about gas R410A and R407C

INTRODUCTION TO R410A - R407C

FAQ

Refrigerants Why use HFC? HFC does not contain chlorine, it is not flammable or toxic. It does not destroy the ozone layer if accidentally released into the atmosphere. The cooling efficiency of HFC, is equal to or greater than that of HCFC. The use of HFCs are becoming prevalent. It is already used in Japan, the U.S. and, to a lesser extent in Europe. What type of refrigerant is R410A? R410A is a mixture of 50% R32 and R125. Its components R410A? They are harmless to the ozone layer. The ODP (ozone depletion potential) of R410A is 0. The R22 is 0.055. The GWP (direct greenhouse effect) is 1740, virtually the same as the R22 is 1700. The cooling performance with R410A is higher than that reached with R22. The pressures that work with R410A are between 50% and 60% higher than those of R22. What are the advantages of R410A? The ODP = 0, does not harm the ozone layer. (ODP R22 = 0.055) R410A performance is similar to R22 in normal conditions. For high capacities and low temperatures, the performance of R410A is substantially higher than that of R22. What disadvantages does the R410A? The pressures that working with R410A, are 1.6 times greater than those of R22. What are the key points in the technical development? When used R410A instead of R22, oil used for R22 can not be used with R410A due to the impossibility of mixing. So you have to use a new oil for the new refrigerant. The key point is to ensure high reliability using these new products. Another key point is to optimize the cooling, as the compressor and heat exchangers to achieve good performance. We have re-examined all the refrigeration cycle. Does it affect the high pressure to the safety of air conditioners? All components of the units have been developed, so that the safety level of these devices equals that we had in the conventional R22.

Is this toxic coolant?

• It is confirmed that neither R32 or R125, are toxic as R22.

Why R134a is not used?

• The cooling capacity of R134a is 40% lower than the R22. For this reason the R134a is not considered useful for cooling.

R407C Why not use it?

• The performance of HVAC R410A, is substantially higher than that of R407C.
• The refrigerant charging procedures are the same as R22.
• However we must be especially careful.
• Due to the high pressure that works. We have to use appropriate equipment and tools.

Protection of the Ozone Layer

What measures to protect the environment have been made ​​about R22 devices already sold?

• It is necessary to take into account the protection of the ozone layer, pick the refrigerant for reuse or destruction, when repair or replacement of home air conditioning is performed.

What efforts must make regarding refrigerants?

• We try to use HFC equipment.
• With regard to the urgency of protecting the ozone layer, we must focus on collecting all the HCFC pair reuse or destruction.
• If we use more and more tasks HFC in our repair facility to get, though not immediately, have a high degree of use of HFC as the old equipment are completed life.

What measures are taken to prevent leakage of refrigerant during installation?

• In recent years, the installers instructions with respect to the vacuum process are given. This helps to reduce the discharge of refrigerant to the atmosphere. We must strengthen the use of vacuum process to minimize leakage of refrigerant.

What is the trend of the industry?

• The trend toward alternative refrigerants walks. The R410A is used for small capacities, R410A and R407C capacities for medium and large capacities for R407C. However, the policy regarding refrigerants varies significantly from one manufacturer to another.
• The shift to alternative refrigerants, varies in accordance with the policies of each company.

Regulation of CFCs (chlorofluorocarbons)

CFC Why is regulated?

• Although the effect of CFCs on the environmental degradation vary, when they are released, they break down in the atmosphere. When they reach the stratosphere, ultraviolet rays strike them. The chemical reaction with the chlorine acts as a catalyst and reduces ozone.
• The hole caused by the reduction of the ozone layer, harmful ultraviolet radiation passes through it and reaching the Earth's surface.
• Using destroying ozone layer such as CFCs, must be regulated for environmental protection.

Are they regulated HCFC internationally?

• According to the Montreal Protocol: With respect to the total amount so reduced in 1996 to 65% in 2004 to 35% in 2010 and will be completely banned in 2020.

The direct greenhouse effect (GWP)

What is the direct greenhouse effect of R410A?

• Theoretically, the performance of R410A is from 92% to 95% of R22, but, currently, the performance of R22 and R410A are equal.
• We're constantly improving our products in relation to energy saving. The GWP of R410 is 1740, similar to the R22 = 1700. We should minimize direct greenhouse effect, collecting all of the coolant and prevent leakage thereof into the atmosphere.

How many years will allow the use of HFCs?

• No dates but considering that we have a long period of use of alternative refrigerants.

Installation and service with new refrigerant (R410A)

What can we say about the installation work?

• The installation method is basically the same. Given the high pressure of R410A, we have to use, pipes and tools adapted to these pressures.
• To avoid errors in the use of tools and provide security for the facility, we proceed to perform manual and hold seminars.

What precautions are required for installation?

• As with R22, should prevent moisture.

Can be reused pipes R22?

• Due to the different type of oil used, the pipes should be perfectly clean before use with R410A.
• R410A requires pipes to withstand the pressures to which the cooling capacity trabaja.Cuando is 4kW or more.
• Keep in mind however, that for lower capacity 4Kw there pipes on the market which are not valid because they have inadequate wall thickness.

What if a team loaded with R22 R410A?

• The diameter of the R410A service ports is different from R22 to charging hoses can not be used. This prevents the load with the wrong coolant.

Does it produce the decomposition of R410A, with fire, toxic substances?

• R410A since no chlorine in their molecules, do not produce the same toxic substances as R22, but is also toxic.
• If refrigerant leak near a point where there is fire occur, ventilate the room as with R22.

How can leak coolant?

• You can use HFC detector or soapy water. What does not work is the detector torch as having no chlorine, no reaction with flame.

Can they be repaired in the future R22 units?

• The R22 refrigerant will be collected and reused, so still available. When gradual reduction takes effect, it will be depleted in the absence of a balance between supply and demand.
• We are confident that the lack of supply will not be inconvenient to use R22 equipment.
• Due to the high pressure of R410A, this can not be used in R22 equipment for safety reasons.

Why different types of refrigerant depending on the capacity of the equipment used?

• Due to the high pressure that works refrigerants would have to completely change the internal structure of the semi-industrial unit air conditioning, this makes it very difficult marketing R410A in semi-industrial equipment.
• Additional charges with R407C, are complicated, as this is a non-azeotropic refrigerant mixture. This reduces the ability to ensure good performance.