Optimal operation of a micro-combined cooling, heating and power system driven by a gas engine

The objective of this paper is to investigate the problem of energy management and optimal operation of cogeneration system for micro-combined cooling, heating and power production (CCHP). The energy system mainly consists of a gas engine, an adsorption chiller, a gas boiler, a heat exchanger and an electric chiller. On the basis of an earlier experimental research of the micro-CCHP system, a non-linear-programming cost-minimization optimization model is presented to determine the optimum operational strategies for the system. It is shown that energy management and optimal operation of the micro-CCHP system is dependent upon load conditions to be satisfied and energy cost. In view of energy cost, it would not be optimal to operate the gas engine when the electric-to-gas cost ratio (EGCR) is very low. With higher EGCR, the optimum operational strategy of the micro-CCHP system is independent of energy cost.

[1]  H. Puttgen,et al.  Optimization Topics Related to Small Power Producing Facilities Operating Under Energy Spot Pricing Policies , 1987, IEEE Power Engineering Review.

[2]  R. Bernal,et al.  Optimization of multiplant cogeneration system operation including electric and steam networks , 1991 .

[3]  Dag Henning,et al.  Investments in combined heat and power plants: influence of fuel price on cost minimised operation , 2002 .

[4]  Ruzhu Wang,et al.  COMBINED COOLING, HEATING AND POWER: A REVIEW , 2006 .

[5]  A. I. Lygeros,et al.  Thermoeconomic operation optimization of the Hellenic Aspropyrgos Refinery combined-cycle cogeneration system , 1996 .

[6]  Brian Agnew,et al.  Energy recovery from diesel engine exhaust gases for performance enhancement and air conditioning , 2002 .

[7]  Kari Alanne,et al.  Sustainable small-scale CHP technologies for buildings: the basis for multi-perspective decision-making , 2004 .

[8]  Alexandre Szklo,et al.  Economic potential of natural gas-fired cogeneration in Brazil : two case studies , 2000 .

[9]  Patrick E. Phelan,et al.  Economic feasibility of combined heat and power and absorption refrigeration with commercially available gas turbines , 2001 .

[10]  Ruzhu Wang,et al.  Study of a novel silica gel-water adsorption chiller. Part I. Design and performance prediction , 2005 .

[11]  Sergio A. A. G. Cerqueira,et al.  Thermoeconomic Evaluation of a Gas Turbine Cogeneration System , 1998, Advanced Energy Systems.

[12]  Hans B. Puttgen,et al.  Optimum Scheduling Procedure for Cogenerating Small Power Producing Facilities , 1989, IEEE Power Engineering Review.

[13]  B. G. Raghavendra,et al.  Integrated energy optimization model for a cogeneration based energy supply system in the process industry , 1995 .

[14]  M. R. von Spakovsky,et al.  The Performance Optimization of a Gas Turbine Cogeneration / Heat Pump Facility with Thermal Storage. , 1995 .

[15]  Ruzhu Wang,et al.  Experimental investigation of a micro-combined cooling, heating and power system driven by a gas engine. , 2005 .

[16]  Shinsuke Akagi,et al.  Influence of fuel cost on the operation of a gas turbine-waste heat boiler cogeneration plant , 1990 .