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本文针对传统火炕烟气污染环境、炕面温差大和炕面温度不均等弊端设计了一种新型相变储能床。通过搭建实验台,测试数据,对相变床的环保性、安全性和热工性能进行了分析研究,并和传统火炕进行对比。根据一天当中床面温度的不同,试验中把床面温度变化分为升温、第一次热稳定、降温和第二次热稳定4个阶段进行研究。研究参数包括:各阶段床面平均温度、平均升温速度、平均降温速度和温度不均度等。结果表明:相变储能床各阶段平均温度为35.19℃、37.37℃、32.31℃、28.08℃,均满足人体舒适性要求。平均升温速度为3.36℃/h,平均降温速度为0.55℃/h,相比于传统火炕加快了升温,减缓了降温,保温效果显著。相变床各个阶段的温度不均度最大为0.83℃,有效改善了火炕温度不均的问题。
In this paper, a new type of phase change energy storage bed has been designed in view of the pollution caused by the traditional flue gas, the large temperature difference of the kang surface and the unequal temperature of the kang surface. By setting up the test bench and test data, the environmental protection, safety and thermal performance of the phase change bed are analyzed and compared with the traditional kang. According to the difference of bed temperature in one day, the change of bed temperature in the experiment is divided into four stages: temperature rise, first thermal stability, cooling and second thermal stability. The research parameters include: bed average temperature, average heating rate, average cooling rate and temperature unevenness in each stage. The results show that the average temperature of phase change energy storage bed is 35.19 ℃, 37.37 ℃, 32.31 ℃ and 28.08 ℃, all of which meet the human comfort requirements. The average heating rate is 3.36 ℃ / h, the average cooling rate is 0.55 ℃ / h, which accelerates the heating compared with the traditional ko-tang and slows down the cooling. The insulation effect is remarkable. The maximum temperature inhomogeneity in each phase of the bed is 0.83 ℃, which effectively improves the temperature unevenness of the kennel.