CIESC Journal ›› 2015, Vol. 66 ›› Issue (S2): 279-286.doi: 10.11949/j.issn.0438-1157.20151135

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Simulation and performance evaluation of CCHP using biomass as fuels

WANG Hairong1,2, LIANG Dong1,2, HUANG Mozhi3   

  1. 1. School of Engineering, Sun Yat-sen University, Guangzhou 510006, Guangdong, China;
    2. The Key Laboratory of Fire Science and Technology of Guangdong Province, Guangzhou 510006, Guangdong, China;
    3. Guangdong Nanyou Foreign Service Company, Guangzhou 510045, Guangdong, China
  • Received:2015-07-15 Revised:2015-07-25 Online:2015-08-31
  • Supported by:

    supported by the National Natural Science Foundation of China (51476190) and Guangzhou Science and Technology Project (2013J4100114).

Abstract:

In order to establish the combined-cycle of CCHP (combined cool heat and power) using natural gas and biomass as fuels, a series of thermodynamic parameters and boundary condition has been tested on ASPEN PLUS simulation plat.And the conversion process of thermal and power of the key part in the system have been discussed, as well as the distributions of material flow rate, pressure and temperature in the system.Besides, the effects of the inputting parameters on economic, technical and emission performance have been studied.The results show that the proportion of natural gas and biomass gasification has a very important impact on exhaust temperature and pressure of gas turbine, waste heat boiler.So does the energy gradient.Under certain blend ratio, with the increase in air, exhaust temperature of gas turbine and waste heat boiler will obviously decline.Though the total capacity utilization increases, relatively energy-saving rate, equivalent exergy efficiency and economy exergy efficiency of the system continue to decreases.And, the air temperature and the ambient temperature will result in overall energy efficiency of the system improved.

Key words: biomass, syngas, mathematical modeling, optimal design, energy conservation and emissions reduction

CLC Number: 

  • TE09

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