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纳米陶瓷辐射散热英文版.ppt

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1、Active Nano Far Infrared Radiant Heat Dissipation Apply to LED Lighting,Updated : October, 2010,Outline,New Lighting Solution in 21 Century LED Luminous Theory LED Optical Properties LED Radiant Heat Dissipation Technology Structure Analysis Q&A,Lighting Sources (Energy Transfer),Traditional Lightin

2、g: Heat LightBurn Heat Light: Fire by rubbing stick, Candle,3,New Lighting Replacement Rule in the New Era,Characteristics Lighting Life Duration (Life Span) Power Consumption Lumen (lm)/Price Raito,4,LED Structure,Electronic Characteristics,V-I Characteristics:Voltage & Current Relation of LED,Forw

3、ard Voltage VF,Operation Voltage: Voltage under provided forward currentMeasured under IF=20mALED forward voltage VF range (1.43.8V),Forward Voltage VF,VF will decrease while PN junction temperature increase.,Reverse Current IR,Usually, the reverse current IR bellow 10A,SUPA Tech LED Radiant Heat Di

4、ssipation,Great Heat Dissipation Solution,Entering Green Energy Era,LED Radiant Heat Dissipation Revolution,Heat Transmission,Heat Transmission Processes within Materials (System),Three Major Heat Transmissions: Convection Conduction Radiation,Convection Heat Transmission,Convection includes fluid m

5、ovement both by bulk motion (advection) and by the motion of individual particles (diffusion) to make the temperature toward even.Heat Convection is the major heat transmitted method for fluid and air.The phenomena of advection is obvious than the fluid convection.,Conduction Heat Transmission,Condu

6、ction is the transfer of thermal energy between neighboring molecules in a substance due to a temperature gradient. It always takes place from a region of higher temperature to a region of lower temperature, and acts to equalize the temperature differences.Heat Convection is the major heat transmitt

7、ed method for solids.,Radiation Heat Transmission,Thermal radiation is generated when heat from the movement of charges in the material is converted to electromagnetic radiation.No medium is necessary for radiation to occur, for it is transferred by electromagnetic waves; radiation takes place even

8、in and through a perfect vacuum。Since the amount of emitted radiation increases with increasing temperature, a net transfer of energy from higher temperatures to lower temperatures results.,Heat Radiation,Radiation is the major method to transmit the heat for long distance thermal transmission.For i

9、nstance, the heat from Sun travel through the vacuum of the space before warming the earth. (about 1500 million Km) Radiation is the only form of heat transfer that can occur in the absence of any form of medium,Acknowledged by PNNL and Oregon State University. The capillary pumping action for the t

10、hermal dissipation is highly improved.SUPA nanometer film coating come with hexagonal pyramid crystal, which provides larger and consistent surface range, and higher efficient heat dissipation than the published research.SUPAs patens application are earlier than the published research.,Larger and co

11、nsistentsurface range with octagonal pyramid w/ triangle surfaces crystal,Thermal film enlargement under 300K times of microscope,The researchers ”this technology will improve to the advanced laser components, radar or electronic components on heat dissipation, possible applications are also applied

12、 to high performance computer, military, aerospace, electronic vehicle and green energy system”(from: HAST June.17, 2010),Heat Dissipation Improvement by Nanometer Coating,Nanometer Far Infrared Ceramic Plate Heating Module,Positive side = 250C Temp. Distribution = Even (Directional),Negative side =

13、 50C Temp. Distribution = Even,This proves the heat from LED substrate side to be removed very efficient and cool down very fast.,Patents and Rewards,1997 iENA - UNE MEDAILLE DOR(德國紐倫堡國際發明展金牌獎)1996 Inventions Geneva Gold(瑞士日內瓦國際發明展鍍金牌獎)1996 National Invention Golden Brain (全國發明展金頭腦獎),Radiation Heat

14、Dissipation Technology for LED,Three Major Heat Transmissions: Convection Conduction Radiation,Active Nano Thermal radiation film,Radiant heat,Input power,Radiant heat transmission provides the highest efficiency Ex. Heat from Sun transmits to Earth with short period through radiation method.,Techni

15、cal Differentiation and Advantages from SUPAs Patent on LED Module Packaging,1. No need of leadframe, Reduce heat resistance, increase luminous angle, & reduce cost dramatically. 2. No need of heat conduction metal (like aluminum heat sink) behind the Sapphire 3. Luminous angel increase from 115 to

16、175 4. High Power light source improved from dot light source to flat surface light source,Packaging Technology Comparison to Others,Traditional LED Packaging (Conduction heat dissipation),Through JDZs nanometer far infrared radiant heat dissipation solution, LED lighting comes high performance in t

17、erms of heat dissipation, longer life time, and higher luminance. No need of aluminum heat sink. Reduce material cost and manufacturing cost. No more heavy weight of LED products.,SUPA LED Packaging (Radiant heat dissipation),Our Temperature Measurements,LED,Phosphor,Silicon,Active Nano Radiation fi

18、lm,Ceramic board,Heat Radiation,T1,T2,T3,Structure Analysis,Radiant Heat Dissipation Application Luminous Efficiency Improvement The Revolution on LED Packaging Processes,Luminous Efficiency Improvement,Lower Junction Temperature Under the Rated Current Density,Increase Current,Increase Luminous Int

19、ensity,Heat Dissipation Issue Impacts to High Power LED Applications,What if the heat dissipation is not solved properly?LED operation temperature rise with 2 major impacts:(1) Decrease luminance (LV)(2) Decrease LED life durationLuminance decrease example: While Tj is 25(typical ambient temp.), the

20、 luminance (LV) is 100 Tj rises to 75 LV reduced to 80 Tj reaches to 125 LV reduces to 60 Tj reaches to 175 LV only 40 left over Obviously, junction temperature and luminance comes with linear indirect proportion relationship. As the temperature raises, the LED luminance will decay tremendously.,Tj

21、v.s. LED life time (hrs),Lower Tj,LED Tj & Life Duration Relations,W,(2) Decrease LED life duration It is linear relationship between temperature & luminance. However, to LED life span duration is exponential relation.,LED Radiant Heat Dissipation Module & Applications,2 dies 200 lm,3 dies 300 lm,5

22、dies 500 lm,16 dies,26,E27,MR16 GU-10,Street Lamp,Plastic cover without Heat Sink and Guarantee the LED Life span and performance,Plastic cover without Heat Sink and Guarantee the LED Life span and performance,Plastic cover without Heat Sink and Guarantee the LEDLife span and performance,E6 / E8,E8L

23、 / E10,P6 / P8,Q8 / Q10,SUPA Active Nano Radiant Heat Dissipation LED Street Light,What SUPA offers ?,LED Module for AssemblyLED Light Products (Light Bulb, Street Lamp, etc.)Customized LED ModulesCustomized Lighting ProductsStrategic Business Partnersand so.,Q & A,Agent in China: crystal secco northern technology Co., LTD Contact: Mr. Huang mobile: 15818764737 Tel: 0755-61392088,

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