Evaluation of CCHP systems performance based on operational cost, primary energy consumption, and carbon dioxide emission by utilizing an optimal operation scheme
Evaluation of CCHP systems performance based on operational cost, primary energy consumption, and carbon dioxide emission by utilizing an optimal operation scheme
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DOI：
10.1016/j.apenergy.2009.04.012
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发表时间：
2009-12
期刊：
影响因子：
11.2
通讯作者：
Heejin Cho;P. Mago;R. Luck;L. Chamra
中科院分区：
文献类型：
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作者：
Heejin Cho;P. Mago;R. Luck;L. Chamra
冷热电联产（CCHP）系统运行的优化通常只关注能源成本。为了使热电联产系统运行中的能源成本最小化，人们开发了不同的算法来实现热电联产机组的最佳利用。然而，在CCHP系统评估期间，也应考虑CCHP运行产生的其他结果，如一次能源消耗和污染物排放，因为人们预计这些结果可能受到监管。本文提出了一种基于运行成本、一次能源消耗（PEC）和二氧化碳排放（CDE）的最优能量调度算法，对不同气候条件下的热电联产系统运行进行优化。所选城市的结果表明，由于优化一个参数可能会减少或增加其他两个参数，因此本文提出的三种优化模式之间总体上没有共同的趋势。唯一显示PEC降低同时CDE也降低的城市是哥伦比亚，MS；明尼阿波利斯、锰;对于这些城市，与使用蒸汽/压缩循环进行冷却和使用天然气进行加热的参考案例相比，运营成本总是增加的。另一方面，对于旧金山和波士顿，CCHP系统增加了CDE。一般来说，如果热电联产系统增加了运行成本，只要保证节能减排，就应该考虑实施这些系统。
Optimization of combined cooling, heating, and power (CCHP) systems operation commonly focuses only on energy cost. Different algorithms have been developed to attain optimal utilization of CCHP units by minimizing the energy cost in CCHP systems operation. However, other outcomes resulting from CCHP operation such as primary energy consumption and emission of pollutants should also be considered during CCHP systems evaluation as one would expect these outcomes can be subject to regulation. This paper presents an optimization of the operation of CCHP systems for different climate conditions based on operational cost, primary energy consumption (PEC), and carbon dioxide emissions (CDE) using an optimal energy dispatch algorithm. The results for the selected cities demonstrate that in general there is not a common trend among the three optimization modes presented in this paper since optimizing one parameter may reduce or increase the other two parameters. The only cities that show reduction of PEC while also reducing the CDE are Columbus, MS; Minneapolis, MN; and Miami, FL. For these cities the operational cost always increases when compared to the reference case consisting of using a vapor/compression cycle for cooling and natural gas for heating. On the other hand, for San Francisco and Boston, CCHP systems increase the CDE. In general, if CCHP systems increase the cost of operation, as long as energy savings and reduction of emissions are guaranteed, the implementation of these systems should be considered.