Thermal and infrared camouflage performance of earth-air heat exchanger for cooling an underground diesel generator room for protective engineering
Thermal and infrared camouflage performance of earth-air heat exchanger for cooling an underground diesel generator room for protective engineering
复制标题
防护工程地下柴油发电机房冷却地-气换热器的热红外伪装性能
DOI：
10.1016/j.scs.2019.101437
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发表时间：
2019-05
影响因子：
11.7
通讯作者：
Sun Liangliang
中科院分区：
文献类型：
--
作者：
Zeng Chao;Yuan Yanping;Xiang Bo;Cao Xiaoling;Zhang Zhaoli;Sun Liangliang
地-气热交换器（EAHE）系统的研究重点是民用和工业建筑的能源效率。为了冷却防护工程的柴油发电机房，EAHE系统的出口温度应控制在接近室外温度的一定范围内，以避免红外线暴露给军事侦察。本研究提出一种利用防护工程的隧道作为EAHE的柴油发电机房的冷却方法。首先提出了满足红外伪装要求的推荐速度。此外，还研究了柴油发电机房的发热量、土壤温度、室外温度的平均值和大小等参数对室内温度的影响。此外，还模拟了3种间歇模式。对于所有的模拟，冷却能力和红外伪装保证的持续时间进行了比较。结果表明，该系统适用于室外平均温度高、昼夜温差小的小型工程。间歇通风能显著提高工作时的红外伪装效果，但由于工作时间较短，对总冷却量影响不大。与非间歇通风条件下相比，系统每隔9 h间歇通风一次，红外伪装防护持续时间增加了29.96%。
Research on earth-air heat exchanger (EAHE) systems focuses on their energy efficiency for civil and industrial buildings. For cooling the protective engineering’s diesel generator room, outlet temperature of EAHE system should be controlled within a certain range close to the outdoor temperature to avoid infrared exposure to military reconnaissance. This study proposed a cooling method for the protective engineering’s diesel generator room by using the engineering’s tunnel as a EAHE. At the beginning, recommended velocity was proposed to meet the infrared camouflage requirement. In addition, influencing parameters including the heat generated in the diesel generator room, soil temperature, and average value and magnitude of outdoor temperature are studied. Also, 3 intermittent modes are simulated. For all simulations, both the cooling capacity and the infrared-camouflage-guaranteed duration are compared. Results show that this system is suitable for small-scale engineering with high average outdoor temperatures and low temperature difference between day and night. The intermittent ventilation significantly improved the infrared camouflage effect while it works but not the total cooling capacity because of the shorter working hours. The infrared-camouflage-protection duration increased by 29.96% as the system intermitted every 9 h, compared with that under non-intermittent ventilation condition.
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