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Parametric optimization of power system for a micro-CCHP system

Journal of Southeast University(English Edition) 2010年第2期26卷 297-301页

作者：李应林张小松南京师范大学动力工程学院南京210024 东南大学能源与环境学院南京210096

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 *** on the experimental data and the universal model of such an engine above,a mathematical model of a refitted engine is *** boundary of the corresponding economical zone is further demarcated,and the optimal operating curve and the operating point of the engine are ***,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 *** 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.

关键词： combined cooling heating and power distributed energy supply battery bank engine

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Optimal Simulation of distributed Generation System for CO_2-Reduction in Supermarket and Restaurant

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Journal of energy and Power Engineering 2014年第11期8卷 1848-1858页

作者： Saori Tajima Tomohiko Mori Sang-Chul Bae Masafumi Katsuta Mechanical Engineering Waseda University Tokyo 169-0072 Japan Waseda University Environmental Research Institute Saitama 367-0035 Japan

After the great east Japan earthquake in 2011, Japanese energy system has been expected to prioritize safety and trustworthiness. Now, distributed power systems are considered as one solution, but utilizing exhaust heat is an important task to be solved. The purpose of this study is to build a simulation model to harness waste heat of commercial buildings. We obtained two types of data： distributed power system in 1/15 scale model of supermarket, restaurant and real world energy consumption of the two buildings. Results showed cold cabinets, whose electricity was affected by temperatures outside and inside, consumed most in supermarket. While air conditioning, affected by air enthalpy of outside and inside, consumed most in restaurant. According to our simulation with gas engine, PV （photovoltaic） panel, PCM （phase change material）, thermal storage, FCU （fan coil unit） and refrigerated cabinets in scale model, we could reduce 27% of CO_2 emission and 25% of running cost by selecting optimal size.

关键词： distributed energy supply thermal energy management CO_2 reduction exhaust heat commercial buildings.

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