基于分布式能量系统的双源可逆型空调系统作为一个独立运行的冷热供应系统,不仅有分布式系统的优点,而且产品单一可避免电上网的问题。对内燃机联产双源系统进行了深入的分析,由敏感性分析结果可知,热泵的循环性能系数(coefficient of performance,COP)和发电效率对双源系统性能影响很大。根据典型内燃机变工况的计算方法和对热泵考虑输入功率的影响,以及对余热型溴化锂机组考虑余热温度的影响,得出双源系统的变工况特性,与其它供热/冷系统比较可知,双源系统的供能能力比土壤源热泵机组和直燃型溴化锂机组要优越;因此,认为内燃机联产双源系统有很大节能潜力,值得推广。
Integrating solar power utilization systems with coal-fired power units, the solar aided coal-fired power generation (SACPG) shows a significant prospect for the large-scale utilization of solar energy and energy saving of thermal power units. The methods and mechanism of system integration were studied. The parabolic trough solar collectors were used to collect solar energy and the integration scheme of SACPG system was determined considering the matching of working fluid flows and energy flows. The thermodynamic characteristics of solar thermal power generation and their effects on the performance of thermal power units were studied, and based on this the integration and optimization model of system structure and parameters were built up. The integration rules and coupling mecha- nism of SACPG systems were summarized in accordance with simulation results. The economic analysis of this SACPG system showed that the solar LEC of a typical SACPG system, considering CO2 avoidance, is 0.098 $/kW·h, lower than that of SEGS, 0.14 $/kW·h.
YANG YongPingCUI YingHongHOU HongJuanGUO XiYanYANG ZhiPingWANG NinLing
