摘要
该文从实验和数值上调查了小型太阳池的瞬态传热传质问题。计算中考虑侧墙的阴影作用和本地的气候条件,二维导热模型和沿深度方向的一维盐扩散模型给出了长期运行小型太阳池内的温度和盐度发展情况。在大连沿海建立2.3m×2.8m,深0.8m实验太阳池,采用卤水和海水灌注太阳池,进行了连续60d的实验测定。小型海水太阳池实验数据用于检验计算结果。计算结果表明,从5月1日开始运行至7月中下旬,储热层平均温度达到近65℃的最大值。实验值与计算值较好吻合。盐度扩散的实验和计算结果表明这种海水-卤水灌注的太阳池中盐度的扩散要比一般的盐水池(NaCl溶液)更为缓慢。
A simulation of heat and mass transfer in a small scale solar pond with hourly time step was presented. The absorption of shading area of the wall was considered in the mathematic model. 2D conductive model and 1D salinity diffusive model were used for the heat and mass transfer subject. Results of simulation for long term operation showed the maximum temperature of the experimental solar pond is around 65℃. An experimental scale solar pond with area of 2.3 × 2.8m^2 and a depth of 0.8m was built in seaside of Dalian. The theoretical results were validated by experimental data operated for 65 days. The temperature distributions results are fairly agreed. Salinity diffusion results indicated that the experimental one is slower than theoretical result, this may due the experimental solar pond filled with bittern and seawater, and this may contribute to stabilize the pond.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2009年第1期32-37,共6页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(50676016)
关键词
小型太阳池
海水-卤水
传热
传质
实验
计算
small-scale solar pond
seawater-bittern
heat transfer
mass transfer
experiment
simulation
