东南大学学报(自然科学版)
東南大學學報(自然科學版)
동남대학학보(자연과학판)
JOURNAL OF SOUTHEAST UNIVERSITY
2015年
3期
484-490
,共7页
太阳能%溶液%再生%效率%逆流
太暘能%溶液%再生%效率%逆流
태양능%용액%재생%효솔%역류
solar energy%solution%regeneration%efficiency%countercurrent
对1m×2m×0.35m逆流太阳能溶液集热/再生器进行实验研究,分析了影响太阳能溶液集热/再生器再生效率的各种影响因素.实验研究发现,常温溶液再生存在明显两段式分布,溶液再生效率随空气流量的增加先增后减,存在最大值;溶液再生效率随溶液流量增加而递减.加热溶液综合再生效率升高;而加热再生用空气其综合再生效率下降.采用含湿量为20 g/kg再生用湿空气的再生效率比用含湿量为10 g/kg的再生用湿空气的再生效率小0.16.随着太阳辐射强度的提高,溶液再生效率也相应增加.因此,逆流太阳能溶液集热/再生器应在空气较干燥、太阳辐射强度较高时运行,并选取适合的空气流量.
對1m×2m×0.35m逆流太暘能溶液集熱/再生器進行實驗研究,分析瞭影響太暘能溶液集熱/再生器再生效率的各種影響因素.實驗研究髮現,常溫溶液再生存在明顯兩段式分佈,溶液再生效率隨空氣流量的增加先增後減,存在最大值;溶液再生效率隨溶液流量增加而遞減.加熱溶液綜閤再生效率升高;而加熱再生用空氣其綜閤再生效率下降.採用含濕量為20 g/kg再生用濕空氣的再生效率比用含濕量為10 g/kg的再生用濕空氣的再生效率小0.16.隨著太暘輻射彊度的提高,溶液再生效率也相應增加.因此,逆流太暘能溶液集熱/再生器應在空氣較榦燥、太暘輻射彊度較高時運行,併選取適閤的空氣流量.
대1m×2m×0.35m역류태양능용액집열/재생기진행실험연구,분석료영향태양능용액집열/재생기재생효솔적각충영향인소.실험연구발현,상온용액재생존재명현량단식분포,용액재생효솔수공기류량적증가선증후감,존재최대치;용액재생효솔수용액류량증가이체감.가열용액종합재생효솔승고;이가열재생용공기기종합재생효솔하강.채용함습량위20 g/kg재생용습공기적재생효솔비용함습량위10 g/kg적재생용습공기적재생효솔소0.16.수착태양복사강도적제고,용액재생효솔야상응증가.인차,역류태양능용액집열/재생기응재공기교간조、태양복사강도교고시운행,병선취괄합적공기류량.
A countercurrent solar solution collector/regenerator ( C/R) with experiment platform the size of 1 m( wide) ×2 m( long) ×0.35 m( high) was used for analyzing the factors influencing re-generation efficiency of solar C/R.It is found that there is an obvious two-stage distribution for re-generating solution at normal temperature.The regeneration efficiency of solution increases first and then decreases with the increase of air mass flow rates and there exists a maximum value.The regen-eration efficiency always decreases with the increase of solution flow rates.Heating solution leads to an increase of integrated regeneration efficiency;however, heating regeneration air decreases the in-tegrated regeneration efficiency.The regeneration efficiency is decreased by 0.16 by using humid air of 20 g/kg instead of using humid air of 10 g/kg.The regeneration efficiency increases correspond-ingly with the increase of the solar radiation intensity.The countercurrent solar solution C/R can op-erate better in dry air and high solar radiation conditions and a suitable air flow-rate should be select-ed to achieve better performance.