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Alternative refrigerants for Air- Conditioners

Alternative refrigerants for Air- Conditioners. Air-Conditioner Division FUJITSU GENERAL LIMITED. ALT-SHRAI-A01-001. CONTENTS. 1. Background of alternative refrigerant air-conditioner development 2. Why does HCFC deplete the Ozone Layer ? 3. What is CFC and HCFC

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Alternative refrigerants for Air- Conditioners

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  1. Alternative refrigerants for Air- Conditioners Air-Conditioner Division FUJITSU GENERAL LIMITED ALT-SHRAI-A01-001

  2. CONTENTS 1. Background of alternative refrigerant air-conditioner development 2. Why does HCFC deplete the Ozone Layer ? 3. What is CFC and HCFC 4. Alternative refrigerant for R22 (not containing chlorine) 5. Fujitsu General plan for alternative refrigerant Air-Conditioner 6. Alternative refrigerant air-conditioner installation and servicing ALT-SHRAI-A01-002

  3. 1. Background of alternative refrigerant Air-conditioners development ALT-SHRAI-A01-003

  4. 1) History of ozone layer protection 1974 : Pointed out that CFC and HCFC are depleting ozone layer 1987 : Montreal Protocol for the controlling production and consumption of CFC and HCFC concluded 1996 : Total ban of CFC by the end of 1995Control of volume of HCFC consumption started . ALT-SHRAI-A01-004

  5. 2) Schedule for phasing out HCFC according to the Montreal protocol (%) (HCFC consumption of 1989) + 100% = 100 (CFC consumption of 1989) x 2.8% 80 65% 60 total abolition 35% 40 only service use started control 20 10% 0.5% 0 1996 2000 2004 2010 2015 2020 2030 (Year) ALT-SHRAI-A01-005

  6. 2. Why does HCFC deplete the Ozone Layer ? ALT-SHRAI-A01-006

  7. 1) What is ozone layer depletion ? sunbeams Ozone layer Harmful ultraviolet rays CFC and HCFC ALT-SHRAI-A01-007

  8. 2) Ozone layer depletion mechanism ClO sunbeam CFC Cl Cl Ozone (O3) O2 CFCl2 ALT-SHRAI-A01-008

  9. 3. What is CFC and HCFC? CFC : Chloro-Fluoro-Carbon High ODP( ozone depletion potential ) chemical compound, including chlorine. (ODP:0.6 - 1.0) For example : R12 (for refrigerator and car air-conditioner) HCFC : Hydro-Chloro-Fluoro-Carbon Low ODP chemical compound, including chlorine and hydrogen. (ODP:0.02– 0.1) For example : R22 (for air conditioner) ALT-SHRAI-A01-009

  10. 4. The alternative refrigerant for R22(does not contain chlorine) HFCs : Hydro-Fluoro-Carbons R134a : Used in refrigerators and car air conditioners R407C : Used in packaged air conditioners R410A : Used in room air conditioners ALT-SHRAI-A01-010

  11. Refrigerant characteristics ALT-SHRAI-A01-011

  12. R407C characteristics • Advantage Working pressure is similar to R22. (about 1.1 times) Design against pressure is easy and safe. • Disadvantage Zeotropic refrigerant Composition control is necessary for charging refrigerant. Review of control system is required as there is a temperature glide. ALT-SHRAI-A01-012

  13. Summary of R407C and R410A characteristics ALT-SHRAI-A01-013

  14. R410A R407C 5.Fujitsu General plan for alternative refrigerant Air conditioner Room Air Conditioner (Wall mounted type) Packaged Air Conditioner ALT-SHRAI-A01-014G

  15. 6. Alternative refrigerant air conditionerinstallation and servicing ALT-SHRAI-A01-015

  16. Installation and servicing precautions ALT-SHRAI-A01-016

  17. Flare and flare nuts ALT-SHRAI-A01-017

  18. Do not use existing (R22) pipes • Be sure to use new pipes when replacing a conventional (R22) model with an HFC (R407C, R410A) model. • If you use the existing pipes, it may cause resolution of the compressor oil by the remaining mineral oil. ALT-SHRAI-A01-018

  19. Be careful not to allow moisture and contamination to enter the pipe Moisture and contamination in the pipe is a cause of trouble. ALT-SHRAI-A01-019

  20. Nitrogen Blowing ALT-SHRAI-A01-020

  21. Airtight & Leak check Never use chlorine refrigerant,oxygen or combustible gas. ALT-SHRAI-A01-021

  22. Air purge Always use a vacuum pump to purge air. ALT-SHRAI-A01-022

  23. Refrigerant charge Always charge from the liquid phase side. Don’t charge from the gas phase side. ALT-SHRAI-A01-023

  24. Countermeasure when the refrigerant leaks • Always recharge from the liquid side. • For R407C, you have to collect the remaining refrigerant and recharge with new refrigerant. ALT-SHRAI-A01-024

  25. Compressor oil is different • We developed a new synthetic oil, since HFC refrigerant doesn’t dissolve in mineral(for R22) oil. • Handle synthetic oil carefully, since it is resolved easily by moisture and contamination. • Don’t mix new synthetic oil and mineral oil. It may cause trouble. ALT-SHRAI-A01-025

  26. 3 check points and their influence Water Dust Leaking ALT-SHRAI-A01-026

  27. Exclusive tools for alternative refrigerant ALT-SHRAI-A01-027

  28. Projection length Flaring tool die Pipe Flaring tools It is recommended the use of exclusive tool for R410A. This tool can also be used for R22 and R407C. When you use conventional tool for R410A, you need to adjust the projection length. ALT-SHRAI-A01-028

  29. Gauge Manifold Specifications differences High pressure gauge Compound gauge Be sure to use the exclusive gauge manifold. You may damage the gauge if you use a conventional gauge. Do not use this gauge for other refrigerants. Connecting port ALT-SHRAI-A01-029

  30. Charge Hose Specifications differences Be sure to use the exclusive charge hose. You may damage the hose if you use conventional hose. Do not use this hose for other refrigerants ALT-SHRAI-A01-030

  31. Vacuum pump Adaptor for preventing backward flow Be sure to use an adaptor for preventing backward flow Additional adapter is required when using conventional pump Additional Adaptor ALT-SHRAI-A01-031

  32. Gas Leakage Detector A high sensitivity gas leakage detector exclusive for HFC (R410A,R407C and other HFC) Do not use a conventional detector ALT-SHRAI-A01-032

  33. Refrigerant recovering equipmentandrecovery cylinder Use suitable recovering equipment and cylinder for R410A and R407C ALT-SHRAI-A01-033

  34. Torque wrench Opposite side size differences The use of a torque wrench is recommended. ALT-SHRAI-A01-034

  35. Summary of installation and servicing • Be sure to cap or tape the end of the pipe during storage. • Always charge refrigerant from the liquid phase side. • For R407C, be sure to replace all the refrigerant when the refrigerant leaks. • Be sure to use exclusive tools. ALT-SHRAI-A01-035

  36. Conclusion • At present, environment protection is a very important matter. Moreover, a positive attitude toward ozone layer protection is needed. • We would like you to prepare for regulation from now on, since to handle HFC refrigerant models, you need a correct knowledge and preparation. ALT-SHRAI-A01-036

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