[1] Li Yinglin, Zhang Xiaosong,. Parametric optimization of power systemfor a micro-CCHP system [J]. Journal of Southeast University (English Edition), 2010, 26 (2): 297-301. [doi:10.3969/j.issn.1003-7985.2010.02.034]
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Parametric optimization of power systemfor a micro-CCHP system(
)
微型冷热电联产系统动力装置的参数优化
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 26
- Issue:
- 2010 2
- Page:
- 297-301
- Research Field:
- Energy and Power Engineering
- Publishing date:
- 2010-06-30
Info
- Title:
- Parametric optimization of power systemfor a micro-CCHP system
- 微型冷热电联产系统动力装置的参数优化
- Author(s):
- Li Yinglin1; Zhang Xiaosong2
-
1School of Power Engineering, Nanjing Normal University, Nanjing 210024, China
2School of Energy and Environment, Southeast University, Nanjing 210096, China
- PACS:
- TK432
- DOI:
- 10.3969/j.issn.1003-7985.2010.02.034
- Abstract:
- The universal mathematical model of an engine is established, and an economical zone, in which an engine mainly provides medium output load at medium speed, is presented. Based on the experimental data and the universal model of such an engine above, a mathematical model of a refitted engine is provided. The boundary of the corresponding economical zone is further demarcated, and the optimal operating curve and the operating point of the engine are analyzed. Then, the energy transforming models of the power system are established in the mode of cooling, heating and power(MCHP), the mode of heating and power(MHP)and the mode of electricity powering(MEP). The parameter matching of the power system is optimized according to the transmission ratios of the gear box in the power distribution system. The results show that, in the MCHP, the speed transmission ratio of the engine to the gear box(ies)and the speed transmission ratio of the motor to the gear box(ims)are defined as 2.9 and 1, respectively; in the MHP, when the demand load of the power system is less than the low critical load of the economical zone, the speed transmission ratio of the motor to the engine(ime)is equal to 1, and when the demand load of the power system exceeds the low critical load of the economical zone, ime equals 0.85; in the MEP, the optimal value of ims is defined as 2.5.
- 建立了内燃机的通用数学模型, 提出了内燃机的运行经济区.得出了改装后的LJ276M型内燃机的数学模型, 并界定了此内燃机的运行经济区的边界范围, 分析了此内燃机的运行优化曲线和最佳运行工况点.针对动力系统的冷热电、热电和供电3种操作模式, 分别建立了能量转换数学模型, 优化了动力装置的内燃机/变速箱传送比ies、电动机/变速箱传送比ims和电动机/内燃机传送比ime.结果表明:在冷热电模式下, ies和ims的优化值分别为2.9和1;在热电模式下, 当动力系统需求负荷小于内燃机运行经济区的下限值时, ime取1, 而当动力系统需求负荷超过内燃机运行经济区的下限值时, ime取0.85;在供电模式下, ims的最优值取2.5.
References:
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[4] Miguez J L, Murillo S, Porteiro J, et al.Feasibility of a new domestic CHP tri-generation with heat pump Ⅰ.Design and development [J].Applied Thermal Engineering, 2004, 24(10): 1409-1419.
[5] Porteiro J, Miguez J L, Murillo S, et al.Feasibility of a new domestic CHP tri-generation with heat pump Ⅱ.Availability analysis [J].Applied Thermal Engineering, 2004, 24(10): 1421-1429.
[6] Smith M A, Few P C.Domestic-scale combined heat-and-power system incorporating a heat pump: analysis of a prototype plant [J].Applied Energy, 2001, 70(3): 215-232.
[7] Moss R W, Roskilly A P, Nanda S K.Reciprocating Joule-cycle engine for domestic CHP systems [J].Applied Energy, 2005, 80(2): 169-185.
[8] Wang R Z, Kong X Q, Wu J Y, et al.Performance research of a micro CCHP system with adsorption chiller [C]//Proceedings of the International Sorption Heat Pump Conference.Denver, USA, 2005: 22-24.
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Memo
- Memo:
-
Biographies: Li Yinglin(1979—), male, graduate, lecturer; Zhang Xiaosong(corresponding author), male, doctor, professor, rachpe@seu.edu.cn.
Foundation item: The Natural Science Foundation of Jiangsu Higher Education Institutions of China(No.2009112TSJ0124).
Citation: Li Yinglin, Zhang Xiaosong.Parametric optimization of power system for a micro-CCHP system[J].Journal of Southeast University(English Edition), 2010, 26(2):297-301.