發(fā)布時間：2018-09-13 08:05

【摘要】：熱回收通風作為一種節(jié)能的通風換氣方式,可緩解畜舍保溫能耗與通風的矛盾。然而民用一體式熱回收通風系統(tǒng)在畜舍中直接應用時存在通風量小、單位通風量的設備造價高等問題。該研究設計了適用于畜舍的新型節(jié)能熱回收通風系統(tǒng),并研究該熱回收通風系統(tǒng)在以下3種不同配置條件下的熱回收效果,探究該系統(tǒng)在畜舍中的較佳運行條件:板翅式熱交換芯體配置不同迎面風速的熱回收效果;新風依次經(jīng)過2個串聯(lián)連接的板翅式熱交換芯體后的熱回收效果;優(yōu)化了板式熱交換芯體與噪聲小、風量大的軸流風機的參數(shù)配比后的熱回收效果。結果表明:在舍內外溫差為12.08℃,芯體配置迎面風速分別為1.05和0.86 m/s時,新風溫度經(jīng)過板翅式熱交換芯體后分別升高了1.93和2.79℃,顯熱回收效率、熱回收負荷和能效比分別為35.88%和43.63%、0.16和0.19 kW,1.37和1.61,兩者顯熱回收效率均未達到冬季65%的節(jié)能標準。在舍內外溫差為10.49℃時,新風依次經(jīng)過串聯(lián)的2個板翅式熱回收芯體,經(jīng)過第1次熱交換后新風溫度升高2.59℃,顯熱回收效率為52.11%,熱回收負荷及能效比分別為0.39 kW,3.26;新風經(jīng)過第2次熱交換芯體時熱回收作用甚微。優(yōu)化板式熱交換芯體與風機配比后,在舍內外溫差為12.12℃,迎面風速為4 m/s時,新風溫度升高8.23℃,顯熱回收效率為69.9%,能效比為8.0,達到了冬季節(jié)能標準。從該研究熱回收效果看,第3種配置參數(shù)條件平衡了熱回收效率及通風需求的關系,可滿足畜舍大通風量及節(jié)能的需求。
[Abstract]:Heat recovery ventilation, as an energy-saving ventilation and ventilation method, can alleviate the contradiction between heat preservation energy consumption and ventilation. However, there are some problems such as low ventilation rate and high cost of unit ventilation in the direct application of civil integrated heat recovery ventilation system in livestock houses. This study designed a new energy saving heat recovery ventilation system for livestock houses, and studied the heat recovery effect of the heat recovery ventilation system under the following three different configurations. The optimal operating conditions of the system in the livestock house are as follows: the heat recovery effect of the plate-fin heat exchange core with different head-on wind speed, the heat recovery effect of the fresh air passing through two plate-fin heat exchange cores connected in series in turn; The heat recovery effect of plate heat exchange core and axial fan with low noise and large air volume was optimized. The results show that the fresh air temperature increases by 1.93 鈩，

本文編號：2240557