Efficient integrated diversified energy supply systems play a pivotal role in addressing current energy challenges. Especially under the summer working conditions, the efficiency is very considerable when the system operates in the refrigeration-hot water mode. However, the fluctuation of system parameters before and after dynamic mode switching exerts substantial influence on the effective integration of system components and stable operation of the system. To achieve a nuanced comprehension of the dynamic characteristics of the integrated system during mode switching, this study utilized experimental method to comprehensively investigate six mode switching processes under summer working conditions. The variation rules of key parameters are explored and the stability of each switching process is compared. The results demonstrate that during the switching from hot water mode to refrigeration-hot water mode (Process E) and from refrigeration-hot water mode back to hot water mode (Process F), the degree of superheat exceeds 0 °C. The degree of superheat maintains stability within the range of 12.4 to 15.2 °C in Process F. The total power fluctuation values in Processes E and F approximate 100 W. Thereinto, Process F exhibits the greatest stability among the six processes, with a maximum stabilized power of approximately 1790 W, an electronic expansion valve opening degree range of 164 to 221, and a peak discharge temperature below 110 °C.

中文翻译：

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夏季工况下集成系统模式切换动态性能实验研究


高效综合多元化能源供应体系对于应对当前能源挑战发挥着关键作用。特别是在夏季工况下，系统以制冷-热水模式运行时，效率非常可观。然而，动态模式切换前后系统参数的波动对系统组件的有效集成和系统的稳定运行产生重大影响。为了详细了解集成系统在模式切换过程中的动态特性，本研究采用实验方法，全面研究了夏季工况下的六种模式切换过程。探究关键参数的变化规律，比较各切换过程的稳定性。结果表明，在从热水模式切换到制冷热水模式（过程E）和从制冷热水模式切换到热水模式（过程F）期间，过热度超过0℃。工艺F的过热度在12.4~15.2℃范围内保持稳定。工艺E和F的总功率波动值接近100W。其中，工艺F在6个工艺中表现出最大的稳定性，最大​​稳定值功率约1790W，电子膨胀阀开度范围164～221，峰值排气温度低于110℃。