R1234yf Commercialization Meeting

1
R1234yf Commercialization Meeting

• Friday 6 February
• Hilton Anatole, Dallas TX
• Ward Atkinson, Chair,
• SAE Interior Climate Control Committee

2
New Standards

• There are 18 new or revised SAE J Standards
  Covering 16 are listed in this presentation
• Service Equipment
• Recovery --- Charging
• Service hoses and fittings
• Leak Detection Electronic Trace Dye
• Technician Training --- Certification
• Certified Evaporators New and Replacement
• Refrigerant Purity
• Measurement of Passenger Compartment Refrigerant
  Concentrations
• System component design requirements

3
New Standards

• These new or revised SAE J Standards Cover
• 5 New Documents for HFO1234yf
• 4 New Documents Common to HFO1234yf and R744
• 1 Revised Standard Common to All Refrigerants
• 6 New Documents for R744
• Its Important to note that development of these
  documents may result in changed wording and/or
  content

4
HFO1234yf

• J2843 HFO1234yf Refrigerant Recovery- Recycle -
  Charging Equipment for Mobile Automotive Air
  Conditioning Systems
• Scopethe purpose of this SAE Standard is to
  establish the specific minimum equipment
  performance requirements for recovery of
  HFO-1234YF (ASHRAE Standard 34-2007, Class A2
  refrigerants) that has been directly removed from
  mobile air-conditioning (A/C) systems. It also
  is intended to establish requirements for
  equipment used to recharge HFO-1234yf to an
  accuracy level that meets section 9.0 of this
  document. The requirements apply to the following
  types of service equipment and their specific
  applications.
• Recovery/Charge Equipment,
• Recovery/Charge -- Refrigerant Charging,
• Refrigerant Recharging Equipment Only.

5
HFO1234yf

• J2844 HFO1234yf Refrigerant Purity and Container
  Requirements for Refrigerant Used in Mobile
  Air-Conditioning Systems
• 1. Scope
• This SAE Standard applies to refrigerant used in
  motor vehicle passenger
• air-conditioning (A/C) systems designed to use
  HFO-1234yf.

6
HFO1234yf

• J2851 HFO1234yf Refrigerant Recovery Only
  Equipment for Mobile Automotive Air Conditioning
  Systems
• 1. ScopeThe purpose of this SAE Standard is to
  provide minimum performance and operating feature
  requirements for the recovery of HFO1234yf
  refrigerant to be returned to a refrigerant
  reclamation facility that will process it to the
  appropriate ARI 700 Standard or allow for
  recycling of the recovered refrigerant to SAE
  J2843 specifications by using J2843-certified
  equipment. It is not acceptable that the
  refrigerant removed from a mobile
  air-conditioning (A/C) system with this equipment
  be directly returned to a mobile A/C system.

7
HFO1234yf

• J2887 HFO1234yf Service Standards for Mobile Air
  Conditioning Systems
• 1. Scope
• The purpose of this Standard is to establish
  minimum requirements for handling of HFO-1234yf
  in the service environment.

8
HFO1234yf

• J2888 HFO1234yf Service Hose, Fittings and
  Couplers for Mobile Refrigerant Systems Service
  Equipment
• 1. Scope
• This SAE Standard covers fittings intended
  for connecting service hoses, per SAE J2196, from
  Mobile Air- Conditioning Systems to HFO1234yf
  service equipment such as manifold gauges, vacuum
  pumps and air conditioning charging, recovery and
  recycling equipment.

9
HFO1234yf and R744

• J2772 Refrigerant Passenger Compartment
  Concentrations Measurement under A/C system
  refrigerant leakage conditions
• 1. Scope
• This SAE Standard focuses on the determination of
  a CO2- and HFO1234yf concentration inside the
  vehicle cabin arising from a R744 or HFO1234yf
  Refrigerant circuit leakage
• This SAE Standard is restricted to refrigeration
  circuits that provide air-conditioning for the
  passenger compartments of passenger and
  commercial vehicles. The purpose is to establish
  an industry standard for determine the
  refrigerant concentration in a vehicle
  compartment. For generation of a refrigerant
  level in the vehicle compartment an external
  refrigerant source is inserted into the
  HVAC-Module airflow to the passenger compartment.
  The measurement shall cover vehicle compartment
  design boundaries, possible usage of the vehicle
  and the refrigerant system. The test procedures
  for measurement and the best practice for usage
  of this procedure shall be described.

10
HFO1234yf and R744

• J2773 Refrigerant Guidelines for Safety and Risk
  Analysis for use in Mobile Air Conditioning
  Systems
• 1. Scope
• This SAE Standard provides an enumeration of
  standards, in which processes and methods are
  described to prove the compliance of the safety
  measures for complex technical systems. According
  these standards the safety requirements for the
  alternative refrigerant vapor compression systems
  have to be verified for the entire lifecycle of
  the vehicle. This SAE Standard Practice is
  restricted to alternative refrigerant vapor
  compression systems that provide air-conditioning
  for the passenger compartments of passenger and
  commercial vehicles.
• This standard describes a vehicle AC system with
  alternative refrigerants in design, production
  and assembly, operation and final scrapping.
  Service aspects are discussed in various SAE
  J-standards.
• Methods to prove the compliance of the safety
  measures and devices with the safety requirements
  are described. This standard focuses on
  requirements and does not demand nor suggest
  concrete solutions.

11
HFO1234yf and R744

• J2842 HFO1234yf and R744 Evaporator Design
  Certification for OEM and service replacement
• 1. Scope
• Mobile air conditioning systems using any
  refrigerant that is toxic (list spec) or has an
  ISO 817 flammability classification of A2L or
  ASHRAE flammability classification of 2 in a
  direct expansion refrigerant system, shall meet
  the requirements of this standard. This standard
  along with other appropriate SAE J Standards
  provide design guidelines for an evaporator(s)
  using this type of refrigerant in a mobile air
  conditioning system.

12
HFO1234yf and R744

• J2845 Technician Certification for Servicing and
  Refrigerant Containment of A/C Systems
• 1. ScopeTechnician training and certification is
  required to ensure safe, efficient and effective
  service and repair of mobile air conditioning
  systems using R744, HFC-152a and HFO-1234yf. The
  technician must be trained to recognize which
  refrigerant is being handled, be trained to
  handle it safely and be equipped with the
  essential information, proper equipment and
  tools, which may be unique to a single
  refrigerant. This standard outlines minimum
  content requirements for such training programs.
  

13
Common All Refrigerants

• J639 Revised Safety Standards for Motor Vehicle
  Refrigerant refrigerant vapor compression systems
  that provide cooling and/or heating for passenger
  and Vapor Compression Systems
• Scope
• This SAE Standard Practice is restricted to
  commercial vehicle passenger compartments. This
  document provides design standards and safety for
  these systems. Also included are cautionary
  statements for the mobile air conditioning
  service industry to alert service technicians to
  the inadvisability and the possible health and
  safety effects associated with venting
  refrigerant during service. It is not intended to
  restrict the use, or further development, of
  other types of refrigeration systems for
  passenger compartment cooling. Should other
  systems be found practical, this document may be
  amended or an additional standard safety practice
  created for such systems. This document addresses
  only CFC-12 (R-12), HFC-134a (R-134a), HFC152a
  (R-152a) and HFO1234yf flammable gas(s), and
  carbon dioxide (R-744) refrigerants. To prevent
  system contamination all refrigerants used in
  mobile air conditioning vapor compression systems
  require unique service fittings. The unique
  service fittings eliminate the potential for
  system refrigerant cross-contamination during
  service activity.

14
R744

• J2683 Revised R744 Refrigerant Purity and
  Container Requirements for Refrigerant Used in
  Mobile Air-Conditioning Systems
• 1. Scope
• This SAE Standard applies to Carbon Dioxide R744
  refrigerant used to service motor vehicle
  passenger air-conditioning (A/C) and heat pump
  systems designed to use R-744. R-744 when used as
  a refrigerant in mobile air-conditioning systems
  shall contain an odorant as an identification of
  refrigerant leaking from the system. Carbon
  Dioxide (R-744) and R134a used as refrigerants in
  Mobile Air-Conditioning Systems are not
  interchangeable. Refrigerants must not be mixed
  together

15
R744

• J2769 R744 Service Hose, Fittings and Couplers
  for Mobile Refrigerant Systems Service Equipment
• 1. Scope
• This SAE Standard covers fittings, couplers, and
  hoses intended for connecting from Mobile
  Refrigerant Systems to refrigerant removal and
  charging equipment. (Figure 1)
• This fitting is physically different in size and
  connection thread type from current known
  fittings used in R-12 or R-134a service equipment
  or mobile refrigerant systems. It is a known
  standard type of fitting which provides the
  strength required for safe handling of high
  pressure gases. Its size difference will also
  reduce the potential of cross-threading service
  hoses on R-12 and R-134a refrigerant storage
  containers and service equipment.
• The hose shall be designed to minimize permeation
  of refrigerants and contamination of refrigerant
  passing there through and to be serviceable over
  a temperature range of -30 to 95C (-22 to
  203F). Hose working pressure shall be at least
  13.2 MPa (Low-Side) respectively 17.6 MPa
  (High-Side) for R744. The minimum burst pressure
  shall be at least 2 times the maximum pressure.
  The hose has to work with R744, PAG-Oil and R744
  Odor with an odor concentration of 250ppm in the
  refrigerant.

16
R744

• J2770 R744 Service Standards for Mobile Air
  Conditioning Systems
• 1. Scope
• The purpose of this Standard is to establish
  minimum requirements for handling of R744 (CO2)
  in the service environment.

17
R744

• J2771 R744 Refrigerant Recovery- Charging
  Equipment for Mobile Automotive Air Conditioning
  Systems
• 1. Scope
• The purpose of this SAE standard is to provide
  equipment specifications for the controlled
  removal, evacuation and charging of R744
  refrigerant for mobile refrigerant systems.
  System charging and service is challenging due to
  high pressures. Recovery of used R-744 is not
  required. This SAE standard is required for
  equipment used to service automobiles, light
  trucks, and other vehicles with similar R-744
  refrigerant systems.

18
R744

• J2774 R744 Refrigerant Minimum Performance
  Criteria for Electronic Leak Detectors
• 1. Scope
• This SAE Standard is restricted to R744
  refrigeration circuits that provide
  air-conditioning for the passenger compartments
  of passenger and commercial vehicles. The purpose
  is to establish an industry standard for
  electronic probe-type leak detectors intended for
  use in automotive air conditioning systems with
  R744 refrigerant. This includes design and
  performance criteria, test procedures for the
  apparatus and the best practice for usage.
• The detector shall be used to find in R744
  system circuits the sources of leaks of the sizes
  listed in Section 3. This iteration is intended
  for research and development, possible use on a
  system or vehicle production (assembly) lines,
  and by service technicians on production
  vehicles.

19
R744

• J2775 R744 Ultraviolet Leak Detection Procedure
  For Use Of Refrigerant Leak Detection Dyes For
  Service Of Mobile Air-Conditioning Systems
• 1. SCOPE
• This SAE standard applies to fluorescent leak
  detection dyes and the corresponding injection
  equipment or other methods of installing the dye
  which are to be used when servicing a mobile
  air-conditioning system's refrigerant circuit for
  the purpose of allowing the application of
  fluorescent leak detection. Dyes should also
  work with R744 CO2 refrigerant with odorant
  added.