Samuel F. Yana Motta Buffalo Research Laboratory

1 Samuel F. yana Motta Buffalo Research LaboratoryLOW GWP ALTERNATIVES FOR COMMERCIAL AC APPLICATIONS 2016 by Honeywell International Inc. All rights reserved. Current SeriesNon Flammable (A1)L SeriesMildly Flammable (A2L)R-123 GWP= 79R-134aGWP=1300R-22 GWP=1760R-404 AGWP=3943R-410 AGWP=1924 Overview of Refrigerant Alternatives1 Note: All GWP values from the IPCC, AR5 Solstice ze(R-1234ze(E))GWP<1 Solstice zd(R-1233zd(E))GWP=1 Solstice N13(R-450A)GWP=547 Solstice N20 GWP=903 Solstice 515A(R-515A)GWP=403 Solstice N40(R-448A)GWP=1273 Solstice yf(R-1234yf)GWP<1 Solstice L20(R-444B)GWP=295 Solstice L40X(R-455A)GWP=146 Solstice L41y(R-452B)GWP=675 Commercial RefrigerationLP ChillersStationary A/CCommercial RefrigerationSelf-Contained RefrigerationCommercial A/CMP ChillersSolstice N40(R-448A)GWP=1273 Solstice L41z(R-447B)GWP=714 MP ChillersHP Chillers 2016 by Honeywell International Inc.

2 All rights reserved. Chillers R123 and R134a Replacements Similar efficiency to R123 with 40% higher capacity Successful use for the EU Channel Project 40% higher efficiency than the existing R22 system (savings of 200 k /year) Long term solution with GWP=1 R1234ze provides significant efficiency improvement vs. R134a R515A is non-flammable R134a replacement with performance similar to R1234ze Can be used while the safety standards and building codes are being modified for flammables Systems designed for R515A can be used with R1234ze (due to similar thermal properties)2 Med. Pressure ChillersR1233zdLow Pressure Chillers7- 12% Efficiency Improvement vs. R134a 2016 by Honeywell International Inc. All rights reserved. DX Systems - R410A Replacements R452B closely matches performance of R410A R447B has slightly lower capacity with similar efficiency toR410A. Discharge temps are very close to R410A (significant advantage in high ambient) The inclusion of 2L refrigerants in the building codes could enable use of these refrigerants in indirect R447B and R452B have reduced flammability Low Likelihood of getting an ignition event Narrow difference between LFL and UFL Hard to ignite due to high MIE Low BV reduces severity of any event3 Flammability VelocityMIE (23 C, Dry) cm/s15 to 100 cm/s*288 to299 **-*R447B properties measured at Honeywell**R452B properties extracted from ASHRAE SubmissionR447B and R452 BCommercial ACR447B and R452 BDX Chillers Existing and upcoming standards should be considered to address the mild flammability in direct systems 2016 by Honeywell International Inc.

3 All rights reserved. DISCLAIMERA lthough all statements and information contained herein are believed to be accurate and reliable, they are presented withoutguarantee or warranty of any kind, expressed or implied. Information provided herein does not relieve the user from the responsibility of carrying out its own tests and experiments, and the user assumes all risks and liability for use of the information and results obtained. Statements or suggestions concerning the use of materials and processes are made without representation or warranty that any such use is free of patentinfringement and are not recommendations to infringe on any patents. The user should not assume that all toxicity data and safety measuresare indicated herein or that other measures may not be required.