Heat dissipation power calculation summary
Main approach to heat conduction convection, radiation
to solve power P = P always + P = hxAix (radial Ti- Tj) + h for convective heat transfer coefficient, the Ai for radiator cooling surface area, Fij as the constant coefficient, for the surface radiation blackness coefficient ( Natural aluminum is about 0. 4, after oxidation treatment is about 0. After 8, anode black is about 0. 9) 。
simple shapes of radiator h value can be estimated by reference to the following formula
heating surface shape and position
[convection heat transfer coefficient W/（ m2*℃） ]
( Gr*Pr） Qualitative size m range
vertical plane wall vertical cylinder
laminar
H
turbulent
because H value is influenced by many factors, complicated calculation, we generally can be used for thermal design, thermal design software can simulate the heat dissipation effect, so as to optimize the improvement.
Sophy
China lighting network
Exhibition name: 2025 THE 137TH CHINA IMPORT AND EXPORT FAIRExhibition date: April 15-19, 2025Booth No. : 14.3 f33-34g10-11/14.2 D13-14-15Address: China Import and Export Fair Hall (Canton Fair Hall)
Date: January 04, 2025
Project location: Somalia
Quantity and specific configuration: 500 sets of 0278-400W solar street lights