2023·9·Building Construction 1914
土壤—空气新风换热器运行特性
李丰会 1 肖 杰 2
1. 青建安装科技有限公司 山东 青岛 266555;2. 青岛城阳城建工程有限公司第二分公司 山东 青岛 266114
摘要: 为满足人员对公共建筑室内热舒适要求,同时考虑公共建筑经济性,提出对餐厅采用土壤 —空气新风换热器系
统,充分利用天然蓄热体土壤,将室外空气与土壤换热,夏季冷却新风,冬季预热新风。利用COMSOL数值模拟软件
对土壤 —空气新风换热器系统进行模拟计算,并与工程实例结果进行对比,证实误差不超过7%。模拟计算结果显示,
管长的增加有利于水平埋地管的换热,埋管管长为30 m时,换热量达到430.63 W;管径越大,换热效果越差,管径取
DN110,换热量为451.09 W;管间距的增大,换热量逐渐升高,管间距为2 m时,换热量为304.62 W。通过与冷冻处
理新风系统进行对比,分析土壤 —空气新风换热器的优势及经济性。
关键词: 土壤 —空气新风换热器;数值模拟;经济性;热舒适
中图分类号: T U 758.7 文献标志码: A 文章编号: 1004 -1001(2023)09 -1 914-0 4 DOI: 1 0.1 4144/j. c nki. jz sg .2 023.0 9.0 51
Operating Characteristics of Soil – Air Fresh Air Heat Exchanger
LI Fenghui 1 XIAO Jie 2
1. Qingjian Installation Technology Co., Ltd., Qingdao 266555, Shandong, China;
2. The Second Branch of Qingdao Chengyang Urban Construction Engineering Co., Ltd., Qingdao 266114, Shandong, China
Abstract: In o rd er to m eet th e th erm al c om fo rt r e q uir e m ents o f o ccup ants in p ub lic b uild in g s a nd c onsid er th e e conom y
o f p ub lic b uild in g s, th e s o il – a ir fr e sh a ir h eat e xc hang er s yste m is p ro p ose d fo r re sta ura nts , w hic h m ake s fu ll u se o f
n atu ra l h eat a ccum ula to r s o il to e xc hang e h eat b etw een o utd oor a ir a nd s o il, s o a s to c ool fr e sh a ir in s u m mer a nd
p re heat fr e sh a ir in w in te r. T he s o il – a ir fr e sh a ir h eat e xc hang er s yste m is s im ula te d b y u sin g C O M SO L n um eric al
s im ula tio n s o ftw are , a nd th e re su lt s a re c om pare d w it h th e e ng in eerin g e xa m ple , a nd th e e rro r is c onfir m ed to b e le ss
th an 7 % . T he s im ula tio n r e su lt s s h ow th at th e in cre ase o f th e p ip e le ng th is b enefic ia l to th e h eat tr a nsfe r o f th e h oriz o nta l
b urie d p ip e, a nd th e h eat tr a nsfe r q uantit y r e aches 4 30.6 3 W w hen th e p ip e le ng th is 3 0 m ; th e la rg er th e p ip e d ia m ete r
is , th e w ors e th e h eat tr a nsfe r e ffe ct is , a nd th e h eat e xc hang e q uantit y is 4 51.0 9 W w hen th e p ip e d ia m ete r is D N110;
w it h th e in cre ase o f th e p ip e s p acin g , th e h eat e xc hang e q uantit y in cre ase s g ra d ually , a nd it is 3 04.6 2 W w hen th e
d is ta nce b etw een p ip es is 2 m . T he a d va nta g es a nd e conom y o f th e s o il – a ir fr e sh a ir h eat e xc hang er a re a naly ze d b y
c om parin g w it h th e r e fr ig era
土壤—空气新风换热器运行特性(论文).pdf