畜舍热交换芯体-风机热回收通风系统的热回收效果
发布时间：2018-09-13 08:05
【摘要】：热回收通风作为一种节能的通风换气方式,可缓解畜舍保温能耗与通风的矛盾。然而民用一体式热回收通风系统在畜舍中直接应用时存在通风量小、单位通风量的设备造价高等问题。该研究设计了适用于畜舍的新型节能热回收通风系统,并研究该热回收通风系统在以下3种不同配置条件下的热回收效果,探究该系统在畜舍中的较佳运行条件:板翅式热交换芯体配置不同迎面风速的热回收效果;新风依次经过2个串联连接的板翅式热交换芯体后的热回收效果;优化了板式热交换芯体与噪声小、风量大的轴流风机的参数配比后的热回收效果。结果表明:在舍内外温差为12.08℃,芯体配置迎面风速分别为1.05和0.86 m/s时,新风温度经过板翅式热交换芯体后分别升高了1.93和2.79℃,显热回收效率、热回收负荷和能效比分别为35.88%和43.63%、0.16和0.19 kW,1.37和1.61,两者显热回收效率均未达到冬季65%的节能标准。在舍内外温差为10.49℃时,新风依次经过串联的2个板翅式热回收芯体,经过第1次热交换后新风温度升高2.59℃,显热回收效率为52.11%,热回收负荷及能效比分别为0.39 kW,3.26;新风经过第2次热交换芯体时热回收作用甚微。优化板式热交换芯体与风机配比后,在舍内外温差为12.12℃,迎面风速为4 m/s时,新风温度升高8.23℃,显热回收效率为69.9%,能效比为8.0,达到了冬季节能标准。从该研究热回收效果看,第3种配置参数条件平衡了热回收效率及通风需求的关系,可满足畜舍大通风量及节能的需求。
[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，
本文编号：2240557
[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，
本文编号：2240557
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