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首页> 外文期刊>International journal of low carbon technologies >Performance and defrosting effect study on the air-to-water heat pump with heat storage device
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Performance and defrosting effect study on the air-to-water heat pump with heat storage device

机译：带蓄热装置的气水热泵的性能及除霜效果研究

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The heat storage device is proposed to avoid the frequent on–off state under partial load, large variation of the supply and return water temperature and long defrosting time of air-to-water heat pump with plate heat exchanger for heating. The heat storage device is composed of a water tank, the inner double-pipe heat exchanger, appendages and the electric heater. The energy storage can reduce on–off times of the compressor. The energy storage and the electric heater can make up the shortage of heating during defrosting. Performance test shows that on–off times for the heat storage device unit compressor under partial load is about four times per hour compared six times per hour for the plate heat exchange unit. Defrosting time is reduced by 78 s by heat storage device unit and 84 s by heat storage device with electric heater unit. More steady running parameters, inlet heating water temperature of heat storage device or heat storage device with electric heater unit is about 35°C, while that of plate heat exchanger reduces to 30.73°C. Therefore, the designed heat storage device can improve the unit performance and is suitable for the new projects with air-to-water heat pumps.
机译：提出的蓄热装置是为了避免带有板式换热器的空气-水热泵在部分负荷下频繁的开关状态，给水和回水温度变化大以及除霜时间长。储热装置由水箱，内部双管热交换器，附件和电加热器组成。能量存储可以减少压缩机的开关时间。储能器和电加热器可以弥补除霜过程中的热量不足。性能测试表明，蓄热装置单元压缩机在部分负荷下的开/关时间约为每小时四次，而板式热交换单元每小时为六次。储热装置单元的除霜时间减少了78 s，带电加热器的储热装置的除霜时间减少了84 s。运行参数更稳定，蓄热装置或带电加热器的蓄热装置的入口热水温度约为35°C，而板式热交换器的入口热水温度降至30.73°C。因此，设计的蓄热装置可以提高机组性能，并适合于带有空气-水热泵的新项目。

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