A novel solar bi-ejector refrigeration system and the performance of the added injector with different structures and operation parameters
A novel solar bi-ejector refrigeration system and the performance of the added injector with different structures and operation parameters
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DOI：
10.1016/j.solener.2009.08.012
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发表时间：
2009-12
期刊：
影响因子：
6.7
通讯作者：
Fei Wang;S. Shen
中科院分区：
文献类型：
--
作者：
Fei Wang;S. Shen
研究了一种新型的太阳能双喷射器制冷系统，该系统与传统系统的不同之处在于用热喷射器代替循环泵。新系统比旧系统工作更稳定，维护工作量更少，整个系统可以更充分地利用太阳能。建立了喷油器和整个太阳能制冷系统性能的数学模型。利用R123研究了不同结构和运行参数下喷射器的升压性能以及太阳能双喷射器制冷系统的性能。结果表明，喷油器的排气压力受喷油器结构尺寸和操作条件的影响。随着发电温度的升高，喷射器的夹带比变好，喷射器的夹带比变差，太阳能双喷射器制冷系统的整体热效率先升高后降低，在发电温度为105℃、冷凝温度为35℃、蒸发温度为10℃时，其最优值为0.132。
A novel solar bi-ejector refrigeration system was investigated, whose difference compared to the traditional system is that the circulation pump is replaced by a thermal injector. The new system works more stably and needs less maintenance work than the old one, and the whole system can more fully utilize the solar energy. The mathematical models for calculating the performance of the injector and the whole solar refrigeration system were established. The pressure rise performance of injector under different structure and operation parameters and the performance of solar bi-ejector refrigeration system were studied with R123. The results show that the discharged pressure of injector is affected by structure dimensions of injector and operation conditions. With increasing generation temperature, the entrainment ratio of ejector becomes better while that of injector becomes worse and the overall thermal efficiency of the solar bi-ejector refrigeration system first increases and then decreases with an optimum value of 0.132 at generation temperature of 105°C, condensation temperature of 35°C and evaporation temperature of 10°C.