R290 Air ConditionerPresented on behalf of GREEBy Dr. Volkmar Hasse, GTZ-PROKLIMA INTERNATIONALAt the Joint West Asia and South Asia Network Meeting10 May 2009

Content

1. Company Introduction

2. R290 A/C Product Introduction 2.1 General Introduction 2.2 R290 Compressor 2.3 Refrigerant Leak Alarm System

3. Market developmentR290 Air Conditioner

1.Company IntroductionGree Electric Appliances, Inc. of Zhuhai, founded in 1991, has become the worlds largest specialised air conditioners company. The company integrates R&D, manufacture, sales and service.In 2008, the annual sales revenues achieved 42 billion RMB (about 4.2 billion Euro)The company is listed among the top "100 Chinese Companies" by Fortune Magazine for eight consecutive years. Company Introduction Gree Electric Appliance Inc. of Zhuhai (China)

1.Company IntroductionGree markets the unique "World Brand" air conditioners in ChinaToday, Gree products are sold in 200 countries.Since 1995 and for 13 continuous years, Gree's sales volume and market share has occupied No. 1 in the Chinese air conditioner industry.Since 2005, for the three consecutive years since then, Grees sales volume of residential air conditioners occupied the first place, globally. For 2008, 190 million units were sold world wide.1.Company Introduction

2. R290 A/C Product IntroductionPlease note also: R22 air conditioners are cheaper than R407C and R410A unitsConclusion: R290 air conditioners will be much cheaper than R410A units2. R290 A/C Product Introduction2.1 General IntroductionThe R290 containing air conditioners can be produced cheaper than R22 products, because: Narrower tubes can be used in the condenser and evaporator since R290 has better heat transfer properties and a lower pressure drop. R290 refrigerant is even cheaper

2.1 General IntroductionSafety features

Gree R290 designs achieved lower refrigerant charge size than is currently required by internationalstandards for R290 air conditioners (IEC 60335-2-40)

Additional features include a special compressor design and refrigerant leak alarm systemThe R290 air conditioners will achieve CE marking (i.e., conform to all EU legislation)

2.1 General IntroductionCapacity and Size of R290 unitsThe COP is 3.52This is better than the A rating of the EU efficiency labelling for air conditioners

Capacity

kw (Btu)COP

w/wCharge

gramMax noise (Inside) DbMax noise (Outside)DbSize

mm 2.7 (9K)3.552653852Outdoor unit830x284x205Indoor unit760x257x541 3.2 (11K)3.5431041523.5 (12K)3.523304152

2.2 R290 Compressor2.2 R290 CompressorThe compressor COP reached up to 3.4 which is higher than that of other companies R290 compressors.Grees R290 compressors currently cost only as much as a R410A compressor. Cost is likely to go down when production increases.

Exhaust structure: more suitable compression ratio, improved efficiencySpecial material inside: compatible, anti-aging designSpecial lubrication oil: make compressor operation more stable and reliable

2.3 Refrigerant Leak Alarm SystemShould a leak be detected in the AC system:

* The compressor will stop operating at once. This avoids high temperature and protects the compressor

* The fans will keep on running (indoor and outdoor) This dilutes the leaking refrigerant through the air flow and thereby avoids gathering gas in the small area and flammable concentrations.* A special audible alarm and flashing light signal will turn on This alarms the owner to open the door or window of the room for ventilation and to call the service telephone number.

Function2.3 Refrigerant Leak Alarm System

2.3 Refrigerant Leaking Alarm SystemAs refrigerant leaks out, the performance of the system will dropThe operating parameters of a leaking AC system are different compared to a normally functioning AC unit. As the A/C system leaks, the system pressure, refrigerant and air temperatures, electric current, etc. will all changeAn electronic control device detects this intelligently and recognises that a leak is really happening, thereby triggering the alarm and shutting the AC down.

Theory of the Alarm System

3. Marketing3. Market developmentThe development of the refrigerant leakage detection and alarm system will be completed in July 2009.Mass production of the R290 units will start before December 2009.

Target market: Primary focus will be in Europe and Chinaas experience is gained marketing will extend to many other countries

Thank you very much for your interestin the ozone and climate friendly R290 technology for air conditionersThank you

*