Potential of Solar Thermal Energy for CCHP Systems
Potential of Solar Thermal Energy for CCHP Systems
复制标题
DOI：
10.1115/es2009-90081
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
N. Fumo;L. Chamra;V. Bortone
中科院分区：
文献类型：
--
作者：
N. Fumo;L. Chamra;V. Bortone
综合能源系统将分布式发电与热激活组件相结合以利用废热，提高整体能源效率，并更好地利用燃料。利用太阳能热能对于提高冷热电联供（CCHP）系统的性能具有吸引力，特别是在夏季，因为制冷负荷与太阳能的可利用性非常吻合。太阳能系统应用的局限性主要与高昂的初始成本以及用于收集太阳能的大面积有关。因此，太阳能热冷热电联供系统似乎是一种增加太阳能热利用的替代方案，以此提高能源系统的整体效率并减少温室气体（GHGs）排放。本研究关注在冷热电联供系统中使用太阳能集热器，以降低办公楼的一次能源消耗（PEC）和二氧化碳排放。通过使用一个基础的冷热电联供系统，从基准线出发对太阳能系统的贡献进行了能源和经济分析。为了比较，对明尼阿波利斯（MN）、芝加哥（IL）、纽约（NY）、亚特兰大（GA）和沃思堡（TX）等城市进行了分析。结果表明，太阳能热冷热电联供系统能够有效降低锅炉的燃料能源消耗。冷热电联供系统中太阳能集热器减少一次能源消耗和二氧化碳排放的潜力随着制冷需求的增加而增加；而太阳能集热器减少一次能源消耗和二氧化碳排放的有效性以及系统通过节省燃料实现自身盈利的能力随着太阳能集热器数量的增加而降低。版权所有©2009美国机械工程师协会
Integrated energy systems combine distributed power generation with thermally activated components to use waste heat, improving the overall energy efficiency, and making better use of fuels. Use of solar thermal energy is attractive to improve combined cooling, heating, and power (CCHP) systems performance, particularly during summer time since the cooling load coincides very well with solar energy availability. Limitation of the use of solar systems is mainly related to high first cost and large surface area for solar energy harvesting. Therefore, solar thermal CCHP systems seem to be an alternative to increase the use of solar thermal energy as a means to increase energy systems overall efficiency and reduce greenhouse gases (GHGs) emissions. This study focuses on the use of solar collectors in CCHP systems in order to reduce PEC and emission of CO2 in office buildings. By using a base CCHP system, the energy and economic analysis are presented as the contribution of the solar system from the baseline. For comparison purposes, the analysis is made for the cities of Minneapolis (MN), Chicago (IL), New York (NY), Atlanta (GA), and Fort Worth (TX). Results show that solar thermal CCHP systems can effectively reduce the fuel energy consumption from the boiler. The potential of solar collectors in CCHP systems to reduce PEC and CO2 emission increases with the cooling demand; while the effectiveness of solar collectors to reduce primary energy consumption and CO2 emission, and the ability of the system to pay by itself from fuel savings, decreases with the number of solar collectors.Copyright © 2009 by ASME