Design And Realization Of A Pcm Thermal Energy Storage Device

Large-scale IC technology has made rapid progress in recent years,and the functions and performance of military electronic products are improving day by day.In the field of missile-borne radar guidance,phase array radar has gradually replaced mechanical scanning radar,which not only improved the combat performance of the missile,but also led to the surge of heat consumption of control circuit in the guidance system and thus giving rise to the reform and innovaition in the field of temperature control of electronic products.Due to the limitation of operation mode,the missile-borne platform cannot provide sufficient cooling space,environment of cooling wind or liquid cooling methods,etc.for the equipment in the cabin,and there is strict volume and weight limitation,therefore the loss of heat dissipation environment makes the demand for heat dissipation and heat protection of onboard electronic devices increasingly prominent.On the other hand,the increase of flight speed has aggravated the process of aerodynamic heating,the heat generated by the friction between the missile and atmosphere is transferred to the interior of the missile,which will cause the abrupt rise of the environment temperature of the electronic equipment in the cabin and will make a threat to the normal operation of the electronic components.Guidance electronic products are usually located at the front end of the missile,which is most affected by the aerodynamic heating effect.The large thermal consumption and the high ambient temperature and the lack of thermal environment have made the guidance electronic products face unprecedented challenges in the field of temperature control.In order to meet the requirements of temperature control for the signal processing module of a certain missile-borne guidance electronic product,the mechanism of temperature control using the phase change process has been studied,and a new type of thermal energy storage device using phase change material(PCM)has been developed.By studying the development and application of phase change material at home and aboard,the feasibility of thermal energy storage device using phase change material has been demonstrated.A type of phase change material has been selected to meet the platform's requirements of stability,safety and environmental adaptability,as well as to satisfy the demands of manufacturing,cost and weight,and to perform effective temperature control of temperature sensitive components of the modules.The thermal conductive enhancement modes of thermal energy storage device using phase change material has been studied,and copper foam has been selected as the complex of thermal conductive enhancement material and phase change material.According to the products design requirements,the volume of phase change material and the material and structure of the metal shell have been determined.The realization process and manufacturing process of the thermal energy storage device using phase change material have been studied,and the optimization proposal of manufacturing has been suggested.The traditional metal material for thermal energy storage device H62,aluminum alloy 5A06 have been selected to make the performance comparison with the new-type PCM thermal energy storage device.The performance of metal thermal energy storage device has been preliminarily verified by simulation,and the heat storage capacity of the PCM thermal energy storage device has been calculated through theoretical calculation.Simulated heat source has been designed and manufactured for the performance tests of the three types of thermal energy storage devices,and the test points have been determined according to design requirements.Through temperature tests,physical verification and comparative analysis have been made on each specification of the three types of thermal energy storage devices such as thermal conductivity and thermal storage capacity.The temperature curves of the three heat storage devices in the test range have been obtained,and the application characteristics of the new-type thermal energy storage device have been achieved.The results show that PCM thermal energy storage device can meet the design requirements and has obvious advantages in heat storage capacity and weight.The thermal conductivity can be further improved after the improvement of the production process.This kind of PCM thermal energy storage device has comprehensive application space and popularization value.