固体蓄热电供暖装置的结构优化

Structural Optimization of Solid Thermal Storage Electric Heating Device

以固体蓄热电供暖装置为研究对象,实测出风口温度、顶面温度、前表面温度、后表面温度。对实测结果进行分析,查找实测最高温度高于JG/T 236—2008《电采暖散热器》限值的位置。采用模拟方法,通过优化结构,使各位置最高温度符合标准限值要求。由测试结果可知:出风口温度超标,存在安全隐患。顶面和前表面温度虽未超出标准限值,但仍然存在着一定安全隐患。由模拟结果可知:适当增大前保温棉厚度,可较大幅度降低前表面温度。前保温棉厚度一定时,随着顶部保温棉厚度增大,顶面温度及出风口温度升高。增大顶部保温棉与前保温棉厚度,对降低后表面温度的作用并不明显。设置上出风口、前出风口可降低出风口温度、顶面温度、前表面温度,对降低后表面温度的作用并不明显。结构参数优化结果:顶部保温棉厚度50 mm,前保温棉厚度45 mm,设置上出风口、前出风口。

Taking the solid thermal storage electric heating device as the research object,the air outlet temperature,top surface temperature,front surface temperature and rear surface temperature were measured.The measured results were analyzed to find the position where the measured maximum temperature is higher than the limit of Electric Heating Radiator(JG/T 236-2008).Using the simulation method,through optimizing the structure,the maximum temperature of each position can meet the standards limit requirements.From the test results,it can be seen that the temperature of the air outlet exceeds the standard,and there is a potential safety hazard.Although the temperature of the top surface and front surface does not exceed the specified limit,there is still a certain safety hazard.It can be seen from the simulation results that:the front surface temperature can be greatly reduced by appropriately increasing the thickness of the front insulation cotton.When the thickness of the front insulation cotton is constant,the top surface temperature and the air outlet temperature increase with the increase of the thickness of the top insulation cotton.Increasing the thickness of the top insulation cotton and the front insulation cotton has little effect on reducing the rear surface temperature.Setting the upper air outlet and the front air outlet can reduce the air outlet temperature,the top surface temperature and the front surface temperature,but the effect on reducing the rear surface temperature is not obvious.Structural parameter optimization results:the thickness of the top insulation cotton is 50 mm,the thickness of the front insulation cotton is 45 mm,and the upper air outlet and the front air outlet are set.