LYU Bei-xuan, CHEN Yu-ren, XIONG Feng. Mathematical Calculation Model and Its Verification for Temperature Distribution of LED Lighting's Heatsinks for Plant Growth in The Summer Greenhouse[J]. Chinese Journal of Luminescence, 2018,39(8): 1115-1122
LYU Bei-xuan, CHEN Yu-ren, XIONG Feng. Mathematical Calculation Model and Its Verification for Temperature Distribution of LED Lighting's Heatsinks for Plant Growth in The Summer Greenhouse[J]. Chinese Journal of Luminescence, 2018,39(8): 1115-1122 DOI: 10.3788/fgxb20183908.1115.
Mathematical Calculation Model and Its Verification for Temperature Distribution of LED Lighting's Heatsinks for Plant Growth in The Summer Greenhouse
A mathematic model of LED heatsinks in greenhouses was established by the condition that the heat conducted into the fin heat equals the total heat from the air convection and the condensation of wet air. The air physical parameters under the worst condition were obtained by the physical simulation model of the greenhouse environment established by experiment and simulation. After obtaining the specific air physical parameters
combined with the constructed mathematical model
the temperature values of the key nodes of a 150 W plant growth LED lamp's heatsink suspended at the height of 2.5 m in the middle of the greenhouse were calculated in the worst case. The correctness of the model was verified by experiment and simulation
the data show that the relative error is not more than 5%
thus this has a positive effect for the design of LED lamps' heatsink for greenhouse.
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references
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