太阳能与冷热电联产系统集成

INTEGRATED SOLAR ENERGY AND CCHP SYSTEM

本文研究太阳能与冷热电联产系统集成,增加槽式太阳能集热器,利用中低温太阳能。在相对节能率的基础上提出全年相对节能率,并采用全年相对节能率评价新系统,用以确定最佳太阳能集热器面积。用软件Aspen Plus模拟流程,装机容量275 kW时,太阳能集热器面积增加,新系统的全年相对节能率先增加后减少,最大全年节能率值为32.7%,而常规系统的全年节能率为30.7%,新系统较常规系统的全年节能率相对提高了6.5%,最佳太阳能集热面积为350 m^2。对于不同装机容量,设计最佳太阳能集热器面积;对于同一装机容量,讨论太阳辐射强度及日照时间对最佳太阳能集热面积的影响。

A novel system which integrated solar energy with CCHP （combined cooling, heating and power） system was researched, compared to traditional CCHP system, a parabolic trough collector was added, using the solar energy of middle-low temperature. Based on classical fuel energy saving ratio, an annual fuel energy saving ratio was proposed and adopted in this paper to determine the optimum area of solar collector. With the help of Aspen Plus software, for a 275 kW power capacity, it is obtained that the influence of collector area on the ratio of new system is increasing first and then decreasing, there exists an optimum value, about 32.7% compared with the ratio of conventional system 30.7%, the ratio of new system relatively increases 6.5%, the optimum area of solar collector was 350 m^2. With different power capacity, the optimum area of solar collector was different and investigated. With the same installation capacity, solar radiation intensity and sunshine duration, the influenced on the design of the optimum area of solar collector and system, were analyzed.