太阳能吸附式空调系统的运行优化及试验研究

介绍了上海生态建筑示范楼太阳能吸附式空调系统的设计。根据吸附式制冷机组的运行特性,利用方差分析的方法,对两台吸附式制冷机组的并联运行模式进行了优化。在此基础上,研究了夏季典型工况下太阳能吸附式空调系统的运行特性,包括太阳能集热器阵列、蓄热水箱、吸附式制冷机组的水温变化规律以及系统制冷量的变化规律。

太阳能制冷系统在不同循环方式下的运行特性

设计了太阳能吸附式制冷系统,通过管路切换,该系统可实现开式循环方式以及闭式循环方式。研究了两种不同的循环方式下,太阳能吸附式空调系统的运行特性,包括太阳能集热器阵列、吸附式制冷机组的温度变化规律以及系统制冷量的变化规律。实验表明,由于蓄热水箱的调节作用,开式循环的运行工况稳定,而闭式循环在运行过程中具有明显的波动性但其具有较高的太阳能集热效率以及系统COP,节能优势明显。

Theoretical Study and Performance Analysis of an Adsorption Chiller

The thermodynamic cycle for an adsorption system is presented inp-T diagram. In order to investigate the performance of the adsorption system, a lumped parameter transient model of the chiller is developed, in order to predict the behaviors of the adsorption chiller system and find the influence of working conditions on its operation. For the working process of the main components of the system, including adsorber, condenser and evaporator, the coupled unsteady equations were set up for each stage. The model was then solved using stable numerical methods from EES （equation engineering solver）, and the performance of the adsorber and condenser/evaporator of the system was analyzed. The condensation, evaporation and adsorber temperature values as well as the adsorption ratio and desorption ratio were obtained as function of operating time. Also, the coefficient of performance was analyzed in function of the heat source temperature and the cooling source temperature.