摘要
以相变材料(PCM)和高效换热器为基础,对板翅式换热器用作热泵相变储热器进行实验研究。探讨板翅式热泵相变储热器中板式换热器与储能材料界面的温度变化、不同水流量下出口水温及出水量。结果显示:处于同一横截面不同板侧上的热电偶所测温度差别较小,温度测量曲线存在较平缓的一段;水温降相同时,水流量越大,放热持续时间越短;当出口水温为40℃时,水流量应采用300kg/h。
The plate-fin heat exchangers used for heat pumps phase change thermal storage were studied by experiment, based on phase change material （PCM） and efficient heat exchanger. The interface temperature changes between plate-fin heat exchangers and energy storage materials, outlet temperature and flow in different water flow rates on heat pump phase change thermal storage device of plate-fin. The experimental results showed that the temperature difference is small in the same side of the plate at different cross-section by thermocouple measured, and there is a gentler section of the temperature measurement curve. The greater water flow rates, the shorter of exothermic under the same temperature drop. The flow rate should use 300kg/h when outlet temperature is 40℃. The resuhs provided experimental basis for the plate-fin heat exchangers used for heat pump phase change thermal storage. The results have practical significance and reference value on plate-fin heat exchangers which are widely used in heat pump phase change thermal storage device.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2012年第6期958-962,共5页
Acta Energiae Solaris Sinica
基金
广州市科技计划(2008Z1-1061)
关键词
板翅式
热泵
相变储热器
界面温度
plate-fin
heat pump
phase change thermal storage
interface temperature
