土木建筑与环境工程
土木建築與環境工程
토목건축여배경공정
JOURNAL OF CIVIL, ARCHITECTURAL & ENVIRONMENTAL ENGINEERING
2015年
1期
35-39,54
,共6页
贺志明%李念平%成剑林%陈琦%张鼎
賀誌明%李唸平%成劍林%陳琦%張鼎
하지명%리념평%성검림%진기%장정
模型简化%数值模拟%传热%热源塔%喷淋工况
模型簡化%數值模擬%傳熱%熱源塔%噴淋工況
모형간화%수치모의%전열%열원탑%분림공황
model reduction%numerical simulation%heat transfer%heat source tower%spraying conditions
建立了闭式热源塔的数学模型,利用MATLAB自编程序,实现了对喷淋工况下热源塔的数值模拟,并将计算结果与实验结果进行了比较。利用程序得到了喷淋工况下的闭式热源塔内喷淋溶液、载热流体、空气焓值的分布,结果表明:塔内空气焓值呈线性分布,翅片换热器上半部分换热效果比下半部分好,塔的中部位置附近最先出现结霜现象,空气干球温度高于5畅1℃,相对湿度高于75%,闭式热源塔热泵系统没有结霜风险,可以停止喷淋泵,有助减少热泵系统的运行能耗。
建立瞭閉式熱源塔的數學模型,利用MATLAB自編程序,實現瞭對噴淋工況下熱源塔的數值模擬,併將計算結果與實驗結果進行瞭比較。利用程序得到瞭噴淋工況下的閉式熱源塔內噴淋溶液、載熱流體、空氣焓值的分佈,結果錶明:塔內空氣焓值呈線性分佈,翅片換熱器上半部分換熱效果比下半部分好,塔的中部位置附近最先齣現結霜現象,空氣榦毬溫度高于5暢1℃,相對濕度高于75%,閉式熱源塔熱泵繫統沒有結霜風險,可以停止噴淋泵,有助減少熱泵繫統的運行能耗。
건립료폐식열원탑적수학모형,이용MATLAB자편정서,실현료대분림공황하열원탑적수치모의,병장계산결과여실험결과진행료비교。이용정서득도료분림공황하적폐식열원탑내분림용액、재열류체、공기함치적분포,결과표명:탑내공기함치정선성분포,시편환열기상반부분환열효과비하반부분호,탑적중부위치부근최선출현결상현상,공기간구온도고우5창1℃,상대습도고우75%,폐식열원탑열빙계통몰유결상풍험,가이정지분림빙,유조감소열빙계통적운행능모。
Compling a program by matlab to investigate closed heat source tower operating under spraying conditions .The numerical results of the spray solution temperature , the refrigerant temperature , air enthalpy value were compared with the experimental ones . The program was used to calculate the distribution of the spray temperature ,refrigerant temperature ,air enthalpy in the closed heat source tower under spraying conditions .Some results were obtained .The air enthalpy is linear distribution and upper fin heat exchanger heat transfer effect is better than the lower part .The center of the tower is firstly frosting . The air dry bulb temperature is above 5.1 ℃and relative humidity is above 75% .The closed heat source heat pump system is without risk of frost ,so stopping the spray pump is viable in order to reduce the energy consumption of the operation of the heat pump system .