一、對流熱傳優於傳導熱傳
dongtaixubingcaoshijiyuduiliurechuanyouyuchuandaorechuanyuanli,jiangpanguanjianyigebangechengshukongjianshi,zaipeiyiyixiaoxingxunhuanshuibengjiangshuidaoliuershangxiaxunhuanyugegebanjianshi,huoliyongbengjiangxubingcaoneishuicongdibuchouchu,congdingbusashui,rucikeyiliyongzuixiaodedonglibeng(每槽約1~2HP )gouchengyidongtaibingshuixunhuanshuiliu,chubingshiguanneilushuiyuguanwaibingshuijianxingchengduiliuchuanre,congertigaojiebingjunyundu。zairongbingguochengyouyuxunhuanshuiliujiaodongshilushuiyubingshuijiandejingzhishuizengliudongqilai,keyouxiaotigaohuanrexiaolv,duiyurongbingxiaoguojuxiangdangzhuyi,jiangdicanbingliang,shaoliangshengyucanbingyehuifudaoshuimianerbuhuikazaipanguanzhijian,fangzhipanguanguodudongjieer,shichubingcaochulengrongliangwanquanfahui。yishangweidongtaichubingcaojibenyuanli,yiweiqiyouyizhitedian。
一yi般ban蓄xu冰bing槽cao在zai盤pan管guan內nei側ce循xun環huan鹵lu水shui,盤pan管guan外wai儲chu水shui結jie冰bing於yu管guan壁bi,由you於yu靜jing止zhi蓄xu冰bing與yu鹵lu水shui熱re交jiao換huan為wei傳chuan導dao熱re傳chuan模mo式shi,因yin此ci儲chu冰bing效xiao率lv不bu佳jia。在zai溶rong冰bing初chu期qi,鹵lu水shui管guan與yu結jie冰bing間jian管guan壁bi冰bing迅xun速su溶rong冰bing成cheng水shui後hou逐zhu漸jian形xing成cheng鹵lu水shui與yu冰bing間jian的de靜jing止zhi水shui層ceng,成cheng為wei熱re阻zu抗kang而er使shi溶rong冰bing效xiao率lv減jian緩huan,甚shen至zhi在zai溶rong冰bing末mo期qi雖sui有you剩sheng餘yu冰bing量liang,卻que無wu法fa使shi用yong的de現xian象xiang。
二、雙向溶冰速率加倍
dongtaixubingcaodelingyigetedianshizairongbingxingchengkeyiliyongbingshuihuishuidonglitidaibingshuixunhuanbeng,shibingshuikeyouwaierneizhijierongbinggongyingkongtiao,zaipeihelushuizineierwaijiangjiebingguanrongbing,xingchengshuangxiangrongbingguxiaolvjiabei。
1 . Convective heat exchange is better than conduction
The dynamic ice storage tank is based on the theory that the convective heat exchange is better thsn conduction . The tank has been divided to several chambers by partition and the small circular pump guide Water flow through every chamber up and down circularly , thus the dynamic circulating chilled water flow may arise from minimum power pump ( aboutl~2 HP per tank ) , and then the flow generating the convective heat exchange between inner brine and outer chilled water to raise the freezing effect in charging process . The circulating water flow will agitate steady water layer between brine and chilled water to break resistance in the discharge process of tank . This result will improve discharge effect and exert storage energy in the tank completely . For the description given above , it’s not only the basic theory but also advantage of dynamic ice storage tank .
In general , brine is circulating in the tube and storage water will be frozen on the outer . Because of the heat exchange between still ice and brine is conduction , so that effect of ice charge is poor . In the beginning of discharge , the ice where near the walt of tube is melting rapidly and then generate still water layer as thermal resistance to reduce discharge effect between brine and ice . TO make matters worse , the remanent ice can ' t be melting in the final of discharge process.
2 . Two - way melting ice caused double effect .
The returning chilled water caused power to substitute for the circulating pump is the other character of dynamic ice storage tank . The chilled wster melts ice in the outside and brine in the inside concurrently , two - way melting ice will csuse double effect .
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