Low-GWP Refrigerants for Air Conditioning and Refrigeration Applications. Samuel F Yana Motta

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1 Low-GWP Refrigerants for Air Conditioning and Refrigeration Applications Samuel F Yana Motta

2 Refrigerants for Stationary Applications HONEYWELL CONFIDENTIAL N Series L Series Current Product Reduced GWP Option ( A1) Lowest GWP Option (A2L) R-404A GWP=3922 HFO Blend GWP~1300 (retrofit) N-40 HFO Blend GWP~1000 (new equip) N-20 HFO Blend GWP~ L-40 HCFC-22 GWP=1810 HFO Blend GWP ~1000 N-20 HFO Blend GWP <150 L-20 R-410A GWP=2088 HFO-Blend GWP <500 L-41 HFC-134a GWP=1430 HFO Blend GWP ~600 N-13 HFO-1234yf GWP = 4 Solstice YF HFO-1234ze GWP = 6 L-13 R-123 GWP= 77 HFO GWP =7 N-12 (most likely B classification) Low GWP Replacements For Most Applications!

3 Replacing HCFC-22 in AC Systems HONEYWELL CONFIDENTIAL ODP = 0 ODP = 0 Low GWP Operating Pressures System redesign necessary if using refrigerants with higher operating pressures HCFC HCFC HFC HFC 410A 410A HFC HFC 407C 407C GWP = 2088 Properties enable cost-effective efficient system GWP=1824 Utilizes R22 design CO CO 2 2 L-41 L-41 HFC32 HFC32 Blend Blend L-20+ L-20+ Hydro Hydro Carbons Very high pressure Major changes needed Low efficiency GWP = 1 Mildly flammable GWP = 675 (R32) GWP < 500 (L41) R410A Performance R32 - high discharge T Mildly flammable GWP<350 Utilizes R22 Designs Highly flammable GWP<20

4 Stationary Air Conditioning HONEYWELL CONFIDENTIAL L-41 HFC-410A Replacement L-20 HCFC-22 Replacement L-41 offers good performance and a significant GWP reduction from R-410A (>75%) It enables compact high efficiency systems in many regions. No problems with high discharge temperatures. L-20 replaces R-22 in AC systems without significant design changes. With a GWP of 350, it reduces significantly environmental impact. It performs well at high ambient temperatures. No problems with high discharge temperatures in the compressor Developed LGWP Blends for Stationary Air-Conditioning

5 HONEYWELL CONFIDENTIAL Air Conditioning for Hot Climates Normalized Power Relative to R % 104% 102% 100% 98% 96% 94% R-410A L-41 L-20+ R-32 Discharge Pressure (Bar) R22 R-410A L-41 L-20+ R-32 92% 5 90% Ambient Temp ( o C) Ambient T L-41 does not show significant power consumption increase as compared to R-22 This assumes all systems with same COP at 28ºC to get comparable seasonal efficiencies L-41 shows lower operating pressures than R-410A and R-32. Operating pressures of L-20 only slightly higher at 46ºC than R-22 Viable Options for Hot Climates and Developing Countries!

6 Replacing HCFC-22 in Refrigeration Systems HONEYWELL CONFIDENTIAL Global Warming Potential HFC HFC 404A 404A ODP = 0 GWP = 3922 Some component changes needed ODP = 0 Low GWP HCFC HCFC Performax Performax LT LT (R-407F) (R-407F) GWP=1825 No component changes needed More efficient than 404A N-20 N-20 / / L-40 L-40 GWP < 1000 (N-20) GWP ~ 1300 (N-40) Mildly flammable GWP<300 HC s HC s CO CO 2 2 Highly flammable GWP<20 Very high pressure, major design changes needed, Poor efficiency

7 HONEYWELL CONFIDENTIAL Commercial Refrigeration Performance of N-40 & L-40 (Low Temperature conditions: 35 C Outdoor/-26.1 C Box) Supermarket/Deli Cases (MT) Experimental Error ±5% Non-Flammable / GWP~1300 Mild-Flammable / GWP<300 Supermarket Freezer Cases (LT) Superior Energy Efficiency compared to R404A! N-40 and L40 offer significantly lower GWP vs. R-404A

8 HONEYWELL CONFIDENTIAL Thank you! Questions? DISCLAIMER Although all statements and information contained herein are believed to be accurate and reliable, they are presented without guarantee 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 patent infringement and are not recommendations to infringe on any patents. The user should not assume that all toxicity data and safety measures are indicated herein or that other measures may not be required.