High Efficiency Room Air-conditioners

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Presentation transcript:

High Efficiency Room Air-conditioners while phasing down HFCs Jonathan Li, Midea Group,China July 2018 v

Opportunities to reduce energy consumption in room air conditioners Use of variable speed compressors/motors Use of latest evaporator and condenser technologies Use of the best optimization of structural design with excellent air flow Use of best optimization of the electronic control logic Use of appropriate refrigerant

HFC consumption phase down for A5 and non A5 countries

Candidates for preventing global warming Properties of Alternative Refrigerants R22 Single R410A Mix R32 HFC Propane (R290) Natural CO2(R744 ) HFO1234yf Refrigerant physical properties Cond. Press. MPa Capacity R22 ratio COP ODP GWP Life Year Flamm- ability Toxicity 1.73 100 0.05 1810 11.9 No Low 2.72 141 92 2088 - 160 97 675 5 1.53 83 98 ＜20 High 10.00 243 41 1 120 1.16 57 90 4 ? 7day 2.80 HCFC Red areas show unsuitable properties as an alternative refrigerant. Candidates for preventing global warming

Energy efficiency Efficiency ratio HFO1234yf R32 R290 CO2 R410A Energy efficiency comparison 　(R410A ratio) HFO1234yf R32 R290 CO2 R410A CO2 and HFO 1234yf have bad efficiency, R290 and R32 have efficiency equivalent to R410A. Efficiency ratio

Comparison of the weights of compressors Refrigerant charge / g Weight of R290 compressor (KG) Weight of R410A compressor (KG) Weight difference (new - old) Portable AC Portable 5K 90 9.1 7.5 1.6 Portable 8K 150 10.6 8.8 1.8 Portable 9K 170 10.6 8.8 1.8 Portable12K 230 12.1 11.5 0.6 9K high wall 285 10.6 8.8 1.8 12K high wall 380 12.1 11.5 0.6

2.Endorsement for Midea Products with Refrigerant R290 (Supported by the United Nations and Chinese Government and Certified by the German Ecolabel Blue Angel)

It is the first in the air conditioning industry certified by the German ecolabel Blue Angel Midea split-type AE series R290 full DC inverter AC is the first of its kind to be awarded the German ecolabel Blue Angel for its ultra-low GWP refrigerant, high energy efficiency, low noise, and stringent material safety control. Guided by the German Federal Ministry for the Environment, the Blue Angel certification is the highest standard of comprehensive energy efficiency, health and environmental characteristics in the field of household electric appliances.

3. Demonstration Projects

Jiaxing Nanyang Polytechnic Institute in Zhejiang Province, China Qty: 1,096 sets Installation time: 2016

University of Seychelles Qty: 18 sets Installation time: 2017

Sample project in Ghana Region: Ghana Qty: 410 units By virtue of its excellent products and ultra-high energy efficiency, Midea won the joint bid of Ghana's Ministry of Environmental Protection and the federally owned Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, becoming the first company authorized to export and sell products with R290 in the market in Ghana.