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Research of Hisense Home Appliance Products Energy Efficiency & Application . Hisense Co., Ltd. . Reported By: Li Yanquan. 2007-07-05. One. About Hisense. Founded in 1969, Hisense now ranks No. 7 among top 100 electronic information businesses;

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slide1

Research of Hisense Home Appliance Products

Energy Efficiency & Application

Hisense Co., Ltd.

Reported By: Li Yanquan

2007-07-05

slide2

One. About Hisense

Founded in 1969, Hisense now ranks No. 7 among top 100 electronic information businesses;

Industry: Color TV, Refrigerator, Air-conditioner, Handset, Software &

Network Equipment

Annual Sales Revenue: RMB 43.5 Billion(2006)

Public Company: 600060 Hisense Electric(Consumer Electronics)

000921 Kelon Electric(White Appliance)

China Famous Trademark: Hisense, Kelon and Ronshen

Production Base: Domestic: Nationwide(20 Plus)

Overseas: South Africa, Hungary and France etc.

slide3

Two. Research of Hisense

Energy Efficiency

Refrigerator & Air-conditioner: Research of Inverter Technology & Improvement of Energy Efficiency

TV: Standby Power Consumption & Work Condition Energy Efficiency Improvement

slide4

Three. Hisense Inverter

Technology

History of Inverter Technology Research

1995: Establishment of inverter technology research institute

1997: Cooperation with Sanyo and launch of AC inverter air-con

2000: Hisense independent R&D and launch of DC inverter air-con

2003: Hisense independent R&D and launch of DC inverter refrigerator

2004: Hisense independent R&D and launch of vector control DC inverter refrigerator

slide5

Three. Hisense Inverter Technology

Why we apply inverter technology ?

1. The advantage of inverter technology lies in energy saving and noise reduction and its application in air-con can improve the comfort of housing environment and its application in refrigerator can improve the freshness of food. The research and application of inverter technology is the mainstream trend of technological and market development.

2. Comparing with DC inverter control technology, the vector inverter control technology is superior in technology and performance and it represents the trend of technological development in the future.

slide6

Three. Hisense Inverter

Technology

What is vector inverter ?

The two technologies of DC and vector are featured by two energization modes and their performance is basically different.

In DC control, two phases are energized simultaneously and the direction of electric current changes 6 times in each electronic cycle and the direction rotates 60 degree each time. The control is simple.

The vector control, three phases are energized simultaneously and the direction of electric current changes over 100 times in each electronic cycle and it can rotate evenly and the control is complicated.

Two Phase Energization(DC) Two Phase Energization(Vector)

slide7

Three. Hisense Inverter Technology

Diagram of Driving Force

DC Control Mode: There is moment fluctuation and loss in each direction change of 60 degree.

Inverter Control Mode: It changes along the direction of tangent and the moment is stable.

DC Control Mode Vector Control Mode

In view of the advantage of vector control technology, Hisense decides to research the technology and its application in home appliance.

slide8

Rev

Vector Control Module (dB(A))

DC Control Module (dB(A))

Decrease %(dB(A))

1800 rpms

32.9

36.5

3.6

2700 rpms

36.6

38.1

2.5

3900 rpms

39.3

41.5

2.2

Three. Hisense Inverter Technology

The Low Noise Feature of Vector Control Technology Driven Compressor

Note: the above data is collected from the same refrigerator test sample and is the comparison of test result under the same conditions and in close quarters.

slide9

Item

Hisense BCD-282VBP

Hisense BCD-282BP

Total Volume

282

262

282

Fridge

151

142

151

Variable Temp.

Compartment

56

50

56

Freezer

75

70

75

Daily Consumption(kw.h/24h)

0.62

0.69

0.65

Compressor Driving Mode

Vector Control Module

High Efficiency Fixed Speed Compressor

DC Control Module

Three. Hisense Inverter Technology

Comparison of Energy Consumption between Refrigerator and Product of Same Spec.

Hisense BCD-

262TDe

slide10

Three. Hisense Inverter Technology

Comparison of Refrigerator’s Fresh Keeping

Through the application of the technology herein the refrigerator can retain constant low temperature status and effectively inhibit the denaturation of protein, prevent the increase of fruit respiration and the reduction of vitamin and improve the freshness. The following diagram is a comparison of the effect comparison with normal refrigerator after 7 days.

Water Content Reduction

VBN Variation

Change of Protein & Fiber

Reduction of Vitamin C

slide11

Three. Hisense Inverter Technology

Performance of Air-con

There is no specific national standard for inverter air-con. Shanghai has a relevant local standard: SEER (energy efficiency index) for class I inverter air-con is > 6.0.

Hisense air-con KFR-22GW/99FZBp is an application of this technology and its SEER is 7.01.

* The SEER of average fixed speed air-con is 2.8-5.0

slide12

Three. Hisense Inverter Technology

Major Achievement

Improvement of Electrical Performance, Reduction of Power Grid Impact & Interference

In the project, research is conducted over vector control technology and it achieves precise control over vector compressor in home appliance, enhances the stability of compressor operation, improves the start up performance of compressor and reduced the impact and interference of power grid.

slide13

Three. Hisense Inverter Technology

2. Improvement of Air-con Comfort Performance & Refrigerator Fresh Keeping Performance

Thanks to the application of vector control technology, it can maintain the low speed operation performance of the compressor and remarkably enhance the high-speed operation of the compressor.

The temperature of the air-con can drop rapidly and maintain around the temperature required and meet the demand for comfort to the maximum.

On the one hand, the wide range variable speed performance can ensure minimum fluctuation of the steady temperature of the refrigerator and on the other hand the fast freezing capability can improve the freshness of frozen food.

slide14

Three. Hisense Inverter Technology

3. Energy Saving & Noise Reduction

Through the application of the technology herein, more energy-saving and low noise home appliance products are made available to the consumers. Besides, the consumption of materials is also reduced, which is conductive to the implementation of state energy-saving industrial policies and effectively alleviate the energy shortage in China. The application is wide.

slide15

Three. Hisense Inverter Technology

4. Improvement of Products Comprehensive Competitiveness

The technology has wide application in Hisense refrigerator, air-con products and it is a new breakthrough in energy saving and fresh keeping (improvement of comfort). Hisense won “Top 10 Innovative Home Application Products in China 2005”, “Annual Innovation Design Award”, “Best Fresh Keeping Award” and “Energy Saving Contribution Award”.

2nd Prize of Scientific and Technological Advancement in Shandong

1st Prize of Scientific and Technological Advancement in Qingdao

slide16

Four. Research of Hisense TV

Energy Saving Technology

1. Standby Power Consumption

As per the statistics of authoritative department, The average standby power consumption of existing home appliance, audio-visual products and office equipment has accounted for about 10% of total power consumption in a home, equivalent to a 15-30W lamp lighting around the clock. The energy consumption is huge and the reduction of standby power consumption is the main target.

slide17

Four. Research of Hisense TV

Energy Saving Technology

1. Standby Power Consumption

Since March 2006, the standard “The Energy Efficiency Limit and Energy Saving Rating Value of Color TV Broadcasting Receiver” GB12021.7-2005 was enacted. The standby power consumption is below 9W and the energy saving standard is below 3W.

In 2000, Hisense launched the 1st generation low-radiative and environment-friendly series products with standby power consumption of below 2W.

In 2001, Hisense launched the 2nd generation environment-friendly product with standby power consumption of 0.7W.

slide18

Four. Research of Hisense TV

Energy Saving Technology

2. Improvement of Unit Work Energy Efficiency

slide19

Four. Research of Hisense TV

Energy Saving Technology

2. Improvement of Unit Work Energy Efficiency

With respect to the LCD products, we interpedently developed the high-pressure inverter scheme so that the PS efficiency of the unit is lifted to 92% while that of the conventional scheme is no more than 82%.

The variation of the ambient sunlight intensity is considered and the actual demand of customers is analyzed. Through technological problem tackling, Hisense took the lead to propose the LCD energy saving mode, under which as much as 40% energy can be saved.

slide20

Four. Research of Hisense TV

Energy Saving Technology

Achievement:

The market share of Hisense FPTV is number one in China and Hisense is number one FPTV brand in China

Winner of National Energy Saving Contribution Award

slide22

Mr. Li Yanquan, senior engineer, director of Hisense Kelon Home Appliance System R&D Center and expert in audio-visual and home appliance refrigeration sector in Hisense Group. Mr. Li commits himself to R&D and management of color TV and refrigerator and he published 20 plus technical papers and applied six state invention patents. Besides, Mr. Li won technological advancement awards and invention awards in Qingdao and Shandong.

In recognition of his achievement, Mr. Li is appraised as Qingdao senior expert, Qingdao talent with outstanding contribution and top talent in specialized technology. Mr. Li is also elected the member of standing committee of Qingdao Association for Science and Technology and recognized as expert in Shandong and national scientific program and technological award appraisal expert database.