新型扩散吸收式制冷中溶液再循环倍率对系统性能的影响

发布时间：2018-06-04 21:37

  本文选题：扩散吸收式制冷 + NH_/LiNO_　； 参考：《太阳能学报》2017年09期

【摘要】：对新型太阳能驱动、带循环泵的NH_3/LiNO_3/He扩散吸收式制冷系统中溶液再循环倍率k值与系统性能系数COP的变化规律进行模拟与分析。结果表明,在不同的发生温度T_g、冷凝温度T_c、最大蒸发温度T_e及喷淋温度T_(24)下,系统COP随溶液再循环倍率k值的增大,普遍呈现先增后减的趋势,因此每一工况下均存在相应的COP和k值;但由于上述各工况和k值对喷淋溶液浓度x_(24)和吸收温度Ta的影响各具特点,导致各工况下的影响程度并不完全相同。在最大蒸发温度为0℃、冷凝温度和喷淋温度为30℃的典型工况下,当发生温度为80~100℃时,k值的最优值在2.5~3.0之间,对应的COP在0.401~0.458之间。机组实际运行时,可根据运行工况条件适当调节相应的k值以提高系统的性能。
[Abstract]:The variation law of solution recirculation rate k and system performance coefficient (COP) in NH_3/LiNO_3/He diffusion absorption refrigeration system driven by solar energy is simulated and analyzed. The results show that under different occurrence temperature, condensation temperature, maximum evaporation temperature, and spray temperature, the COP of the system generally increases first and then decreases with the increase of the ratio k of the solution recirculation. Therefore, there are corresponding COP and k values under each working condition, but the influence of the above conditions and k values on the concentration of spray solution x _ S _ (24) and the absorption temperature Ta has its own characteristics, which leads to the different influence degree of each condition. When the maximum evaporation temperature is 0 鈩，

本文编号：1978909