| With the large scale,the chicken industry is gradually showing a scale and intensive farming form in China.The pecking habit among chickens is easily emerging in breeding.While the pecking occurs,it will spread rapidly,causing a wide range of bacterial infections and immeasurable losses.Beak trimming is the most effective way to solve this problem.It’s a manual way to remove the sharp part at the front of the beak.Beak trimming with a hot knife is the traditional method which has poor accuracy,unevenness after trimming,low efficiency,and is easy to need re-infect.Recently,beak trimming by infrared ray is the most advanced technique and can avoid the above problems.It uses high-energy infrared light to burn the tip of the beak.Its non-contact beak trimming method can also reduce the stress response of chickens and is more conducive to growth.Based on the principle of infrared beak trimming,the paper designs a lamp tube.Using SolidWorks to complete the 3-D model,combining ANSYS to solve the numerical simulation,analyzing the thermal characteristics to design components of heat dissipation optimization,and manufacturing physical objects to do some experiments.The result shows that the experimental results are congruent with the simulated,and the designed heat dissipation system is effective well.The main work content of this thesis is as follows:Based on the research on the principle of infrared beak trimming,the paper analyzes the structural characteristics,the heating characteristics and the working condition,then chooses an appropriate illuminant;Completed the overall scheme design of the heating lamp after light source selected,compares the strengths and weaknesses in different schemes to ensure the designed scheme of each parts;Compared the various cooling methods through simulation analysis,determines the heat dissipation and cooling scheme.Based on the fundamental theory of heat transfer and the lamp tube structure,the evaluation indicators of heat dissipation effect are confirmed on account of the highest temperature on outer surface and the average in flow field;The parameters of infrared light source are calculated to select a suitable gold-plated tungsten-halogen lamp cup,and the 3-D model is completed to analyze the temperature distribution;After completed the model of the lamp tube according to the design plan,the simulation is solved.The result shows that the lamp tube effectively averages the temperature,but the outside surface temperature is still high,so heat dissipation is urgently required.Based on the Fluent numerical simulation theory,the heat dissipation structure is analyzed to make sure the optimal length of the lamp tube;Designed the air guiding tube for the deflector device,the simulation result shows that it can effectively reduce the temperature of the outer surface,then determine the optimal air guiding tube length;In actual engineering problems,selected the commonly used fans for simulation research,and the result shows that under the similar Air-Pressure curves of the same series fans,the higher wind speed,the better heat dissipation effect.Therefore,under the similar wind speed,comparing different brands of fans to determine the best cooling fan,the simulation result shows that the maximum temperature of the outer surface dropped from 251.28℃ to 139.39℃,and the heat dissipation effect is remarkable.Build an experimental platform to complete the chicken beak trimming experiment to verify the effect of the designed infrared lamp.The experiment result shows that the beaktrimming is effective and in line with expectations when burning for 2 seconds.The research and analysis on the outside surface temperature in the heat dissipation as the heat steady are effective.The result shows that the temperature of the outer surface is higher during natural cooling;the cooling effect is obvious after adding a fan;After that,the heat dissipation effect is improved.The agreement between the experiment and the simulation is prefect,the expected design goal is achieved. |
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