热源侧水温水量对太阳能喷射制冷系统的影响分析

发布时间：2018-06-30 19:35

  本文选题：太阳能喷射制冷系统 + 水温　； 参考：《太阳能学报》2016年02期

【摘要】：为了解太阳能集热热水波动特性对喷射制冷系统性能影响,本文选取HFC134a作为制冷剂,建立太阳能喷射制冷系统性能仿真模型,并验证模型的可靠性,计算分析系统性能系数COP、制冷量、喷射系数等参数随发生器进口水温和进口水流量的变化情况。研究表明,在研究参数范围内,随着发生器进口水温和水流量的增加,系统COP和喷射系数呈现先增后减的趋势,发生热量呈现递增的趋势,发生器入口水温和水流量均存在最佳区域,在研究工况范围内,水温和流量的最佳区域分别为364.0~366.0 K和0.23~0.27 kg/s;在系统冷冻水温度为288.0 K的情况下,当发生器进口水温Tg,win为365.0 K时,系统的COP、制冷量和喷射系数分别到达峰值0.26、4.30 k W和0.34;当mg,w为0.25 kg/s时,系统COP、制冷量和喷射系数分别到达峰值0.277、4.41 k W和0.34。该研究可为太阳能喷射制冷系统的控制优化设计提供理论支撑,加速该类型制冷系统的推广应用。
[Abstract]:In order to understand the effect of the fluctuation characteristics of solar hot water on the performance of the ejector refrigeration system, HFC134a is selected as the refrigerant in this paper, and the simulation model of the performance of the solar energy jet refrigeration system is established, and the reliability of the model is verified. Calculation and analysis of the system performance coefficient COP, refrigerating capacity, jet coefficient and other parameters with the generator inlet water temperature and inlet water flow changes. The results show that with the increase of inlet water temperature and water flow rate, the cop and jet coefficient of the system increase first and then decrease, and the heat increases gradually. The optimal region of water temperature and flow rate at the inlet of the generator is 364.0 / 366.0 K and 0.23 ~ 0.27 kg / s, respectively, and the inlet water temperature of the generator is 365.0 K when the system chilled water temperature is 288.0 K, and the optimum temperature and flow rate are 364.0 and 0.23 kg / s, respectively, in the range of the working conditions, and when the system chilled water temperature is 288.0 K, when the inlet water temperature of the generator is 365.0 K, The COP, cooling capacity and ejection coefficient of the system reach the peak value of 0.26o4.30kW and 0.34kW, respectively. When the MGW is 0.25 kg/s, the COP, refrigerating capacity and ejection coefficient reach the peak values of 0.2774.41kW and 0.34kW, respectively. The research can provide theoretical support for the control and optimization design of solar ejector refrigeration system and accelerate the popularization and application of this type of refrigeration system.
【作者单位】： 中原工学院能源与环境学院;
【基金】：国家自然科学基金(51306214) 河南省重点科技攻关计划(132102210176) 河南省高校科技创新人才计划(14HASTIT003)
【分类号】：TB657;TK519
，

本文编号：2086607