本文選題：太陽能噴射制冷系統(tǒng) + 水溫��； 參考：《太陽能學報》2016年02期

【摘要】：為了解太陽能集熱熱水波動特性對噴射制冷系統(tǒng)性能影響,本文選取HFC134a作為制冷劑,建立太陽能噴射制冷系統(tǒng)性能仿真模型,并驗證模型的可靠性,計算分析系統(tǒng)性能系數(shù)COP、制冷量、噴射系數(shù)等參數(shù)隨發(fā)生器進口水溫和進口水流量的變化情況。研究表明,在研究參數(shù)范圍內(nèi),隨著發(fā)生器進口水溫和水流量的增加,系統(tǒng)COP和噴射系數(shù)呈現(xiàn)先增后減的趨勢,發(fā)生熱量呈現(xiàn)遞增的趨勢,發(fā)生器入口水溫和水流量均存在最佳區(qū)域,在研究工況范圍內(nèi),水溫和流量的最佳區(qū)域分別為364.0~366.0 K和0.23~0.27 kg/s;在系統(tǒng)冷凍水溫度為288.0 K的情況下,當發(fā)生器進口水溫Tg,win為365.0 K時,系統(tǒng)的COP、制冷量和噴射系數(shù)分別到達峰值0.26、4.30 k W和0.34;當mg,w為0.25 kg/s時,系統(tǒng)COP、制冷量和噴射系數(shù)分別到達峰值0.277、4.41 k W和0.34。該研究可為太陽能噴射制冷系統(tǒng)的控制優(yōu)化設計提供理論支撐,加速該類型制冷系統(tǒng)的推廣應用。
[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.
【作者單位】： 中原工學院能源與環(huán)境學院;
【基金】：國家自然科學基金(51306214) 河南省重點科技攻關計劃(132102210176) 河南省高�？萍紕�(chuàng)新人才計劃(14HASTIT003)
【分類號】：TB657;TK519
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本文編號：2086607