Nowadays death of a newborn baby due to hypothermia is one of the vital factors. To overcome the problem infant radiant warmer has been used in hospitals which helps to prevent excessive heat loss of the baby by maint...Nowadays death of a newborn baby due to hypothermia is one of the vital factors. To overcome the problem infant radiant warmer has been used in hospitals which helps to prevent excessive heat loss of the baby by maintaining a proper temperature. However, in practice, it is critical to regulating proper thermal stability that </span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">is </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">exactly</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">required for a premature baby to conquer the heat loss problem. In this study, we have established a computational model for heat transfer analysis using the Finite Element Method. The heat transfer to the surrounding area skin of newborn with the help of Infant Radiant Warmer (IRW) is simulated to study the best range of light source to overcome the hypothermia. We simulate the efficiency and effect of the infant radiant of the thermal radiation using COMSOL Multiphysics program. For this simulation, we considered the distance between the infant’s mattress and the bottom surface of the heater unit as 70</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">cm and the heater power 500 watts, and 600 watts. We have investigated mattress temperature, baby temperature and surface radiosity which are important to understand to increase newborn baby body temperature. It is found that the temperature of mattress raises up to 36</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">- 36.5 degrees Celsius and skin temperature raises up to 37</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">37.5 degrees Celsius.展开更多
目的通过数值模拟(numerical simulation)得到床面温度场结果,并与实验比较,探讨有限元方法(finite element methods,FEM)应用于保暖台温度场分析的可行性,从而为使用数值模拟方法辅助该类产品结构的优化设计提供参考价值。方法首先使...目的通过数值模拟(numerical simulation)得到床面温度场结果,并与实验比较,探讨有限元方法(finite element methods,FEM)应用于保暖台温度场分析的可行性,从而为使用数值模拟方法辅助该类产品结构的优化设计提供参考价值。方法首先使用三维软件SOLIDWORKS建立当前D公司某型号辐射保暖台的相关模型,然后导入ANSYS中,对保暖台在20℃环境以及全功率工作状态下的床面温度场进行有限元仿真,获得了温度数值及均匀性的仿真结果。与此同时,采用多通道温度记录仪和红外热像仪对床面的主要测试点及整体温度场进行记录,最后对仿真实试验数据进行误差分析。结果使用合理的计算方法得到仿真与实验测试点的误差率均在10%以内,且温度场的分布趋势也基本一致,验证了该有限元仿真方法有效。结论该有限元仿真方法所得数值比较准确,能够提前预测辐射温度场,辅助保暖台类产品结构的优化设计。展开更多
文摘Nowadays death of a newborn baby due to hypothermia is one of the vital factors. To overcome the problem infant radiant warmer has been used in hospitals which helps to prevent excessive heat loss of the baby by maintaining a proper temperature. However, in practice, it is critical to regulating proper thermal stability that </span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">is </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">exactly</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">required for a premature baby to conquer the heat loss problem. In this study, we have established a computational model for heat transfer analysis using the Finite Element Method. The heat transfer to the surrounding area skin of newborn with the help of Infant Radiant Warmer (IRW) is simulated to study the best range of light source to overcome the hypothermia. We simulate the efficiency and effect of the infant radiant of the thermal radiation using COMSOL Multiphysics program. For this simulation, we considered the distance between the infant’s mattress and the bottom surface of the heater unit as 70</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">cm and the heater power 500 watts, and 600 watts. We have investigated mattress temperature, baby temperature and surface radiosity which are important to understand to increase newborn baby body temperature. It is found that the temperature of mattress raises up to 36</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">- 36.5 degrees Celsius and skin temperature raises up to 37</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">37.5 degrees Celsius.
文摘目的通过数值模拟(numerical simulation)得到床面温度场结果,并与实验比较,探讨有限元方法(finite element methods,FEM)应用于保暖台温度场分析的可行性,从而为使用数值模拟方法辅助该类产品结构的优化设计提供参考价值。方法首先使用三维软件SOLIDWORKS建立当前D公司某型号辐射保暖台的相关模型,然后导入ANSYS中,对保暖台在20℃环境以及全功率工作状态下的床面温度场进行有限元仿真,获得了温度数值及均匀性的仿真结果。与此同时,采用多通道温度记录仪和红外热像仪对床面的主要测试点及整体温度场进行记录,最后对仿真实试验数据进行误差分析。结果使用合理的计算方法得到仿真与实验测试点的误差率均在10%以内,且温度场的分布趋势也基本一致,验证了该有限元仿真方法有效。结论该有限元仿真方法所得数值比较准确,能够提前预测辐射温度场,辅助保暖台类产品结构的优化设计。