辐射制冷与贴附射流送风负荷分配比例研究  

Research on load distribution ratio of radiant cooling and attached jet air ventilation

作　　者：沈文增 庄兆意[1] 王斌 王光斌 SHEN Wenzeng;ZHUANG Zhaoyi;WANG Bin;WANG Guangbin(School of Thermal Engineering,Shandong Jianzhu University,Jinan 250101,China)

机构地区：[1]山东建筑大学热能工程学院,山东济南250101

出　　处：《山东建筑大学学报》2021年第3期60-67,共8页Journal of Shandong Jianzhu University

基　　金：国家自然科学基金项目(51708339);山东省高等学校“青创科技计划”项目(2019KJH012)。

摘　　要：辐射冷板与新风承担不同负荷比例时,室内热湿环境差异导致人体舒适度不同,而两者负荷的有效配比既可实现室内良好热舒适性,又能降低空调能耗。文章以墙壁辐射供冷—贴附射流加导流板送风系统的办公室为模型,利用CFD软件模拟了在新风承担不同负荷比例时,室内不同高度的温度、速度、相对湿度变化特征,并分析了室内不同位置的热舒适度。结果表明:各工况在相同测点,温差的最大、最小值分别为0.18和0.09℃;室内风速≤0.3 m/s,其最大风速度差为0.025 m/s,出现在0.7 m处;相同含湿量下,送风温度越低,送风相对含湿量越高;人体背风侧舒适度最好,新风承担的负荷比例控制在40%~45%时,室内平均热舒适度最好。When the radiant cold plate and fresh air bear different load ratios,the difference in indoor thermal and humid environment will lead to different human comfort.The effective ratio of the two loads can achieve good indoor thermal comfort and reduce air conditioning energy consumption.This paper takes an office with wall radiant cooling and an attached jet with baffle air supply system as a model,and uses CFD software to simulate the relationship between indoor temperature,speed,relative humidity and indoor thermal comfort when the fresh air bears different load ratios.The results show that at the same measuring point in each working condition,the maximum and minimum temperature difference is 0.18℃and 0.09℃,respectively.The maximum speed difference appears at 0.7 m,the value is 0.025 m/s.The wind speed does not exceed 0.3 m/s.Under the same humidity content,the lower the supply air temperature is,the higher the relative humidity content of the supply air is.The human body has the best comfort on the leeward side.When the proportion of load borne by the fresh air is controlled at 40%~45%,the average indoor thermal comfort is the best.

关 键 词：辐射供冷 贴附射流 热舒适度 负荷分配比例 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]