纳米陶瓷辐射散热英文版

Active Nano Far Infrared Radiant Heat Dissipation Apply to LED LightingUpdated : 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 Lighting: Heat → LightBurn → Heat → Light: Fire by rubbing stick, Candle

New Lighting Replacement Rule in the New Era Characteristics Lighting Life Duration (Life Span) Power Consumption Lumen (lm)/Price Raito4

LED Structure

P Electrode (+) +

P Layer Light Lighting Layer (Activating Layer_ N Layer N Type Substrate (Sapphire)

N Electrode (-)

Electronic Characteristics V-I Characteristics:Voltage & Current : Relation of LED

Forward Voltage VF Operation Voltage: Voltage under provided forward current Measured under IF=20mA LED forward voltage VF range (1.4~ ~ 3.8V)

Forward Voltage VF VF will decrease while PN junction temperature increase.

Reverse Current IR Usually, the reverse current IR bellow 10µA

Entering Green Energy Era LED Radiant Heat Dissipation Revolution

Great Heat Dissipation Solution

SUPA Tech LED Radiant Heat Dissipation

Heat Transmission Heat Transmission Processes within Materials (System)Three Major Heat Transmissions: – Convection – Conduction – Radiation

Convection Heat Transmission Convection includes fluid movement both by bulk motion (advection) and by the motion of inpidual 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 Conduction 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 transmitted 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 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 instance, 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

Heat Dissipation Improvement by Nanometer CoatingAcknowledged by P

NNL and Oregon State University. The capillary pumping action for the thermal 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. SUPA’s patens application are earlier than the published research.

Larger and consistent surface range with octagonal pyramid w/ triangle surfaces crystalThe researchers ”…this technology will

Thermal film enlargement under 300K times of microscope

improve to the advanced laser components, radar or electronic components on heat dissipation, possible applications are also applied to high performance computer, military, aerospace, electronic vehicle and green energy system……”2010) (from: HAST June.17,