Modeling and experimentation of a novel pressurized CHP system with water extraction

A novel cooling and power cycle is proposed, which combines a semi-closed cycle gas turbine called the high-pressure regenerative turbine engine (HPRTE) with a vapor absorption refrigeration system (VARS). This combined HPRTE/VARS cycle is capable of producing power, water and refrigeration effect for external loads. In a previous study, the combined cycle was modeled using zero-dimensional steady-state thermodynamics, with specified values of polytrophic efficiencies and pressure drops for the turbo-machinery and heat exchangers. In this study, a modified version of the combined HPRTE/VARS cycle is experimentally investigated for the demonstration of the combined cycle concept and for the model validation. This modified HPRTE has two water-cooled heat exchangers instead of the absorption refrigeration system. The model of the original combined HPRTE/VARS cycle was modified to simulate the performance of the modified HPRTE cycle. Temperatures, pressure, mass flow rates and other overall cycle parameters obtained from the computer model are compared with the corresponding experimental values of the modified cycle. The agreement between the values is found to be within acceptable limits. In addition, the uncertainty analysis of the experimental data is undertaken to find the uncertainty in the final output variables: thermal efficiency and non-dimensional water extraction parameter. Copyright © 2008 John Wiley & Sons, Ltd.

[1]  R. MacFarlane,et al.  System impact of H2O production and injection on a novel semi-closed cycle gas turbine , 1997 .

[2]  S. A. Sherif,et al.  Second Law Analysis of a Novel Combined Cooling and Power Cycle With Water Harvesting , 2005 .

[3]  S. A. Sherif,et al.  Demonstration of a Novel Combined Cooling and Power Gas Turbine with Water Harvesting , 2005 .

[4]  Daniele Fiaschi,et al.  Semi-Closed Gas Turbine/Combined Cycle With Water Recovery and Extensive Exhaust Gas Recirculation , 1996 .

[5]  J. Wunning,et al.  Flameless oxidation to reduce thermal no-formation , 1997 .

[6]  S. A. Sherif,et al.  Testing and Modeling of a Semi-Closed Gas Turbine Cycle Integrated With a Vapor Absorption Refrigeration System , 2006 .

[7]  Alberto Traverso,et al.  WIDGET-TEMP: A Novel Web-Based Approach for Thermoeconomic Analysis and Optimization of Conventional and Innovative Cycles , 2004 .

[8]  Nebojsa Gasparovic.  THE ADVANTAGE OF SEMI-CLOSED CYCLE GAS TURBINES FOR NAVAL SHIP PROPULSION , 1968 .

[9]  S. A. Sherif,et al.  Performance of a Novel Semi-Closed Gas Turbine Refrigeration Combined Cycle , 2003 .

[10]  Nishant Muley,et al.  Effect of Exhaust Gas Recirculation on Thermal NOx Formation Rate in Gas Turbine Engines , 2003 .

[11]  Pedro J. Coelho,et al.  Numerical simulation of a mild combustion burner , 2001 .

[12]  Norbert Peters,et al.  Laseroptical investigation of highly preheated combustion with strong exhaust gas recirculation , 1998 .

[13]  Klaus Brun,et al.  Measurement Uncertainties Encountered During Gas Turbine Driven Compressor Field Testing , 2001 .

[14]  N. Myers,et al.  Filament Wound Structural Model Studies for Deep Submergence Vehicles , 1965 .

[15]  J. Khan,et al.  Modeling and optimization of a novel pressurized CHP system with water extraction and refrigeration , 2008 .

[16]  S. H. DeWitt,et al.  Internally Fired Semi-Closed Cycle Gas Turbine Plant for Naval Propulsion , 1956 .

[17]  D. R. Stull,et al.  JANAF Thermochemical Tables. Second Edition , 1971 .