不完全濕壓縮特性研究
發(fā)布時(shí)間：2019-03-27 10:57
【摘要】：本文提出了不完全濕壓縮概念,并利用制冷劑在溫熵圖上氣化飽和線的坡度系數(shù)預(yù)測工質(zhì)的不完全濕壓縮特性。分析在AHRI(Air-Conditioning,Heating,and Refrigeration Institute,空調(diào)供暖制冷協(xié)會(huì))空調(diào)和低溫制冷工況下,R22、R32和NH_3這三種濕工質(zhì)的坡度較緩,其最大COP都在不完全濕壓縮區(qū)間,COP的增加值(與吸氣飽和時(shí)相比)分別為0.43%/0.32%,2.12%/2.44%和5.89%/9.95%;R134a的坡度系數(shù)絕對值過小,吸氣帶液壓縮的理論COP反而下降。研究表明:坡度系數(shù)為負(fù)值的工質(zhì)具有較好的不完全濕壓縮性能,且坡度越緩,其濕壓縮COP改善的幾率越大;R32和氨的排氣溫度高,而且其吸氣帶液壓縮COP改善的潛力也更大,不完全濕壓縮對于排氣溫度高且坡度系數(shù)絕對值大的濕工質(zhì)應(yīng)用價(jià)值更大。
[Abstract]:In this paper, the concept of incomplete wet compression is proposed, and the incomplete wet compression characteristics of refrigerant are predicted by the gradient coefficient of the gasification saturation line of refrigerant on the temperature entropy diagram. Under the condition of AHRI (Air-Conditioning,Heating,and Refrigeration Institute, heating and Refrigeration Association) air conditioning and low temperature refrigeration, the gradient of R22, R32 and NH_3 is relatively slow, and the maximum COP is in incomplete wet compression range. The added value of COP was 0.43% / 0.32%, 2.12% / 2.44% and 5.89% / 9.95%, respectively. The absolute value of slope coefficient of R 134a is too small, but the theoretical COP of suction zone fluid compression decreases. The results show that the working fluid with negative slope coefficient has better incomplete wet compression performance, and the slower the gradient is, the greater the probability of improvement of wet compression COP is. The exhaust temperature of R32 and ammonia is high, and the potential of improving COP of suction zone fluid compression is greater. Incomplete wet compression is more valuable for wet working fluid with high exhaust temperature and high absolute slope coefficient.
【作者單位】： 上海理工大學(xué)能源與動(dòng)力工程學(xué)院;
【基金】：博導(dǎo)類聯(lián)合基金資助項(xiàng)目(No.3312301001) 上海市研究生創(chuàng)新基金資助項(xiàng)目(No.JWCXSL1201)
【分類號】：TB64
本文編號：2448123
[Abstract]:In this paper, the concept of incomplete wet compression is proposed, and the incomplete wet compression characteristics of refrigerant are predicted by the gradient coefficient of the gasification saturation line of refrigerant on the temperature entropy diagram. Under the condition of AHRI (Air-Conditioning,Heating,and Refrigeration Institute, heating and Refrigeration Association) air conditioning and low temperature refrigeration, the gradient of R22, R32 and NH_3 is relatively slow, and the maximum COP is in incomplete wet compression range. The added value of COP was 0.43% / 0.32%, 2.12% / 2.44% and 5.89% / 9.95%, respectively. The absolute value of slope coefficient of R 134a is too small, but the theoretical COP of suction zone fluid compression decreases. The results show that the working fluid with negative slope coefficient has better incomplete wet compression performance, and the slower the gradient is, the greater the probability of improvement of wet compression COP is. The exhaust temperature of R32 and ammonia is high, and the potential of improving COP of suction zone fluid compression is greater. Incomplete wet compression is more valuable for wet working fluid with high exhaust temperature and high absolute slope coefficient.
【作者單位】： 上海理工大學(xué)能源與動(dòng)力工程學(xué)院;
【基金】：博導(dǎo)類聯(lián)合基金資助項(xiàng)目(No.3312301001) 上海市研究生創(chuàng)新基金資助項(xiàng)目(No.JWCXSL1201)
【分類號】：TB64
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