文章詳目資料

正修學報

  • 加入收藏
  • 下載文章
篇名 利用噴霧式冷卻氣冷式冷凝器改善冷凍系統性能的實驗研究
卷期 34
並列篇名 Experimental Study on the Performance Improvement of an Air-Cooled Refrigeration System Using a Sprayed, Air-Cooled Condenser
作者 溫茂育
頁次 055-072
關鍵字 排熱COP二流體噴嘴氣冷式冷凝器冷凍系統heat rejectionfluid-pressurized nozzlesair-cooled condenserair conditioning system
出刊日期 202112

中文摘要

本文主要是探討空氣-水噴霧對氣冷式冷凝器的蒸發冷卻性能的影響。實驗是在固定噴射水壓力為1.2MPa 下,3-5 MPa 的空氣噴射壓力(噴霧壓力,P),2.25-4.4 m / s 的空速和30-50 cm 的噴射距離(噴嘴與測試冷凝器表面之間的距離)下進行的。實驗結果表明,隨著噴霧壓力(P)的增加,排熱率(Ψ),性能係數(COP)和COP 的增加百分比(ε)均增加。此外,所有測試條件下的COP 隨噴射距離(L)的增加而降低。此外,在當前P 範圍內,本研究的ε值顯示大約增加了11.8-12.96%(對於V = 2.25 m / s),增加了8.66-11.31% (對於V = 3.9 m / s),增加了7.67-8.58%(對於V = 4.4 m / s)。可以清楚地看到,最大ε值為在V = 2.25 m / s,其後分別為V= 3.9 m / s 和V = 4.4m / s。在當前的P 範圍內,最佳Ψ值分別為在L = 40cm,其次是L = 30 cm和L = 50 cm。

英文摘要

The main purpose of this study is to investigate the effect of humid air on the evaporative cooling performance of air-cooled condensers under fluid-pressurized nozzles. The experiments were carried out at a spray pressure of 3-5 MPa (spraying water), airspeed of 2.25-4.4 m/s, and a spray distance of 30-50 cm (distance between nozzle and test condenser surface). The experimental results indicate that the rate of heat rejection (Ψ), the coefficient of performance (COP), and the percentage increase of COP (ε) all increase as the pressure of spraying water (P) increases. In addition, the COP for all test materials decreases as the distance of spraying water (L) increases. In addition, the ε value for the present study under the present P range showed about a 10.6-11.2% increase (for V=2.25 m/s), a 7.0-7.8% increase (for V=3.9 m/s), and a 7.8-10.4% increase (for V=4.4 m/s). It is clearly seen that the Largest ε value is for V=2.25 m/s, followed by V=4.4 m/s, and V=3.9m/s, respectively. Under the present P range, the best Ψ is at L=4 cm, followed by L=3 cm, and L=5 cm, respectively.

相關文獻