变容量家庭能源中心单独制热水模式的实验研究

Experimental study on water heating mode of domestic energy system with variable capacity compressor

中文关键词: 变容量压缩机  空调  热水  家庭能源中心  实验研究  控制策略

英文关键词: variable capacity compressor  air conditioning  hot water  domestic energy system  experimental study  control strategy

中文摘要:

      提出了可全年供应空调和热水需要的变容量家庭能源中心系统，并提出单独制热水模式下的性能系数计算方法。通过对该模式瞬时动态特性的研究，指出变容量压缩机可以有效地保证机组的安全可靠运行。实验研究了单独制热水模式在不同环境温度、不同压缩机负荷条件下的性能。结果表明，在同一压缩机负荷条件下，在同一压缩机负荷条件下，热水性能系数均随环境温度的升高而升高，与传统热泵热水器的变化趋势相同。而压缩机负荷变化对机组热水性能系数的影响在不同的环境温度下呈现不同的规律，可根据不同的环境温度，优化控制压缩机负荷，以提高制热水效率，节约能源。

英文摘要:

      A domestic energy system was introduced, which can realize the supply of space heating, cooling and domestic hot water throughout the year. The authors proposed a new system performance indicator to describe energy efficiency of the water heating mode. A serial of experiments were conducted under variable conditions. The transient performance shows that the compressor control is more effective than the outdoor fan speed control for safe and reliable operation. When the compressor load is fixed, the mode has similar performance trend to the traditional heat pump water heater under different outdoor temperature conditions. However, the influence of compressor load varies significantly with ambient temperature. The system efficiency of 100% compressor load is not the highest, especially when ambient temperature is relatively high. Optimized compressor load control can help to improve energy efficiency.