直膨式太阳能热泵柔性设计
Flexible Design of Direct Expansion Solar-assisted Heat Pump

本文引入柔性理论，提出了一种直膨式太阳能热泵系统的柔性设计方案。由于柔性空间内存在一个虚拟工况点，使柔性空间内工况点都能实现稳定的换热效果。实验验证仿真模拟的可靠性，再利用控制环境变量得到影响系统COP的环境因素权重：辐照强度占52.2 %，环境温度占34.7 %，风速占13.1 %。根据权重构建柔性空间，并对落入柔性区间内工况点进行验证。通过对25套系统分别在全年具有代表性天气工况下的运行模拟，得到虚拟工况点最优组合：辐照强度、环境温度、风速分别为559.97 W/m2、21.6 ℃、2.89 m/s。模拟结果表明以虚拟工况点最优组合作为依据设计稳定性优于传统静态设计。
A flexible design scheme for a direct expansion solar-assisted heat pump system is presented. Based on the flexible theory for the virtual operating point of the basis design, which was stored in the flexible space, all of the operating points within the flexible space could achieve almost the same heat transfer effect. The weights of the environmental factors for the system’s coefficient of performance (COP) were obtained in a simulation and verified in an experiment, including the irradiation intensity (52.2%), temperature (34.7%), and wind speed (13.1%). A total of 25 sets of systems were simulated under typical weather conditions. The purpose was to verify the operating points that fell in the flexible space based on the weights for the optimal combination of virtual operating points obtained. The values of the irradiation intensity (It), ambient temperature (T0), and wind velocity (uw) were 559.97 W/m2, 21.6 ℃, and 2.89 m/s respectively. The simulation results showed that the variance in the system’s COP was 0.156，which was superior to the traditional static design result